watchdog: Giant scrub

index 85269c3..269ada2 100644
@@ -58,39 +58,46 @@
 #include <linux/types.h>		/* For standard types (like size_t) */
 #include <linux/errno.h>		/* For the -ENODEV/... values */
 #include <linux/kernel.h>		/* For printk/panic/... */
-#include <linux/miscdevice.h>		/* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
+#include <linux/miscdevice.h>		/* For MODULE_ALIAS_MISCDEV
+							(WATCHDOG_MINOR) */
 #include <linux/watchdog.h>		/* For the watchdog specific items */
 #include <linux/fs.h>			/* For file operations */
 #include <linux/ioport.h>		/* For io-port access */
 #include <linux/platform_device.h>	/* For platform_driver framework */
 #include <linux/init.h>			/* For __init/__exit/... */
 
-#include <asm/uaccess.h>		/* For copy_to_user/put_user/... */
-#include <asm/io.h>			/* For inb/outb/... */
+#include <linux/uaccess.h>		/* For copy_to_user/put_user/... */
+#include <linux/io.h>			/* For inb/outb/... */
 
 /* Module information */
 #define DRV_NAME "acquirewdt"
 #define PFX DRV_NAME ": "
 #define WATCHDOG_NAME "Acquire WDT"
-#define WATCHDOG_HEARTBEAT 0	/* There is no way to see what the correct time-out period is */
+/* There is no way to see what the correct time-out period is */
+#define WATCHDOG_HEARTBEAT 0
 
 /* internal variables */
-static struct platform_device *acq_platform_device;	/* the watchdog platform device */
+/* the watchdog platform device */
+static struct platform_device *acq_platform_device;
 static unsigned long acq_is_open;
 static char expect_close;
 
 /* module parameters */
-static int wdt_stop = 0x43;	/* You must set this - there is no sane way to probe for this board. */
+/* You must set this - there is no sane way to probe for this board. */
+static int wdt_stop = 0x43;
 module_param(wdt_stop, int, 0);
 MODULE_PARM_DESC(wdt_stop, "Acquire WDT 'stop' io port (default 0x43)");
 
-static int wdt_start = 0x443;	/* You must set this - there is no sane way to probe for this board. */
+/* You must set this - there is no sane way to probe for this board. */
+static int wdt_start = 0x443;
 module_param(wdt_start, int, 0);
 MODULE_PARM_DESC(wdt_start, "Acquire WDT 'start' io port (default 0x443)");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+	"Watchdog cannot be stopped once started (default="
+	__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 /*
  *	Watchdog Operations

@@ -112,18 +119,18 @@ static void acq_stop(void)
  *	/dev/watchdog handling
  */
 
-static ssize_t acq_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t acq_write(struct file *file, const char __user *buf,
+						size_t count, loff_t *ppos)
 {
 	/* See if we got the magic character 'V' and reload the timer */
-	if(count) {
+	if (count) {
 		if (!nowayout) {
 			size_t i;
-
 			/* note: just in case someone wrote the magic character
 			 * five months ago... */
 			expect_close = 0;
-
-			/* scan to see whether or not we got the magic character */
+			/* scan to see whether or not we got the
+			   magic character */
 			for (i = 0; i != count; i++) {
 				char c;
 				if (get_user(c, buf + i))

@@ -132,64 +139,55 @@ static ssize_t acq_write(struct file *file, const char __user *buf, size_t count
 					expect_close = 42;
 			}
 		}
-
-		/* Well, anyhow someone wrote to us, we should return that favour */
+		/* Well, anyhow someone wrote to us, we should
+				return that favour */
 		acq_keepalive();
 	}
 	return count;
 }
 
-static int acq_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-	unsigned long arg)
+static long acq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	int options, retval = -EINVAL;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident =
-	{
+	static struct watchdog_info ident = {
 		.options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
 		.identity = WATCHDOG_NAME,
 	};
 
-	switch(cmd)
-	{
+	switch (cmd) {
 	case WDIOC_GETSUPPORT:
-	  return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+		return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
 
 	case WDIOC_GETSTATUS:
 	case WDIOC_GETBOOTSTATUS:
-	  return put_user(0, p);
+		return put_user(0, p);
 
 	case WDIOC_KEEPALIVE:
-	  acq_keepalive();
-	  return 0;
+		acq_keepalive();
+		return 0;
 
 	case WDIOC_GETTIMEOUT:
 	  return put_user(WATCHDOG_HEARTBEAT, p);
 
 	case WDIOC_SETOPTIONS:
 	{
-	    if (get_user(options, p))
-	      return -EFAULT;
-
-	    if (options & WDIOS_DISABLECARD)
-	    {
-	      acq_stop();
-	      retval = 0;
-	    }
-
-	    if (options & WDIOS_ENABLECARD)
-	    {
-	      acq_keepalive();
-	      retval = 0;
-	    }
-
-	    return retval;
+		if (get_user(options, p))
+			return -EFAULT;
+		if (options & WDIOS_DISABLECARD) {
+			acq_stop();
+			retval = 0;
+		}
+		if (options & WDIOS_ENABLECARD) {
+			acq_keepalive();
+			retval = 0;
+		}
+		return retval;
 	}
-
 	default:
-	  return -ENOTTY;
+		return -ENOTTY;
 	}
 }
 

@@ -211,7 +209,8 @@ static int acq_close(struct inode *inode, struct file *file)
 	if (expect_close == 42) {
 		acq_stop();
 	} else {
-		printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+		printk(KERN_CRIT PFX
+			"Unexpected close, not stopping watchdog!\n");
 		acq_keepalive();
 	}
 	clear_bit(0, &acq_is_open);

@@ -227,7 +226,7 @@ static const struct file_operations acq_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= acq_write,
-	.ioctl		= acq_ioctl,
+	.unlocked_ioctl	= acq_ioctl,
 	.open		= acq_open,
 	.release	= acq_close,
 };

@@ -248,32 +247,29 @@ static int __devinit acq_probe(struct platform_device *dev)
 
 	if (wdt_stop != wdt_start) {
 		if (!request_region(wdt_stop, 1, WATCHDOG_NAME)) {
-			printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
-				wdt_stop);
+			printk(KERN_ERR PFX
+			    "I/O address 0x%04x already in use\n", wdt_stop);
 			ret = -EIO;
 			goto out;
 		}
 	}
 
 	if (!request_region(wdt_start, 1, WATCHDOG_NAME)) {
-		printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
+		printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
 			wdt_start);
 		ret = -EIO;
 		goto unreg_stop;
 	}
-
 	ret = misc_register(&acq_miscdev);
 	if (ret != 0) {
-		printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-			WATCHDOG_MINOR, ret);
+		printk(KERN_ERR PFX
+			"cannot register miscdev on minor=%d (err=%d)\n",
+							WATCHDOG_MINOR, ret);
 		goto unreg_regions;
 	}
-
-	printk (KERN_INFO PFX "initialized. (nowayout=%d)\n",
-		nowayout);
+	printk(KERN_INFO PFX "initialized. (nowayout=%d)\n", nowayout);
 
 	return 0;
-
 unreg_regions:
 	release_region(wdt_start, 1);
 unreg_stop:

@@ -286,9 +282,9 @@ out:
 static int __devexit acq_remove(struct platform_device *dev)
 {
 	misc_deregister(&acq_miscdev);
-	release_region(wdt_start,1);
-	if(wdt_stop != wdt_start)
-		release_region(wdt_stop,1);
+	release_region(wdt_start, 1);
+	if (wdt_stop != wdt_start)
+		release_region(wdt_stop, 1);
 
 	return 0;
 }

@@ -313,18 +309,19 @@ static int __init acq_init(void)
 {
 	int err;
 
-	printk(KERN_INFO "WDT driver for Acquire single board computer initialising.\n");
+	printk(KERN_INFO
+	      "WDT driver for Acquire single board computer initialising.\n");
 
 	err = platform_driver_register(&acquirewdt_driver);
 	if (err)
 		return err;
 
-	acq_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+	acq_platform_device = platform_device_register_simple(DRV_NAME,
+								-1, NULL, 0);
 	if (IS_ERR(acq_platform_device)) {
 		err = PTR_ERR(acq_platform_device);
 		goto unreg_platform_driver;
 	}
-
 	return 0;
 
 unreg_platform_driver:

index 8121cc2..7597571 100644
@@ -72,35 +72,35 @@ MODULE_PARM_DESC(wdt_start, "Advantech WDT 'start' io port (default 0x443)");
 
 static int timeout = WATCHDOG_TIMEOUT;	/* in seconds */
 module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=63, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ".");
+MODULE_PARM_DESC(timeout,
+	"Watchdog timeout in seconds. 1<= timeout <=63, default="
+		__MODULE_STRING(WATCHDOG_TIMEOUT) ".");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+	"Watchdog cannot be stopped once started (default="
+		__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 /*
  *	Watchdog Operations
  */
 
-static void
-advwdt_ping(void)
+static void advwdt_ping(void)
 {
 	/* Write a watchdog value */
 	outb_p(timeout, wdt_start);
 }
 
-static void
-advwdt_disable(void)
+static void advwdt_disable(void)
 {
 	inb_p(wdt_stop);
 }
 
-static int
-advwdt_set_heartbeat(int t)
+static int advwdt_set_heartbeat(int t)
 {
-	if ((t < 1) || (t > 63))
+	if (t < 1 || t > 63)
 		return -EINVAL;
-
 	timeout = t;
 	return 0;
 }

@@ -109,8 +109,8 @@ advwdt_set_heartbeat(int t)
  *	/dev/watchdog handling
  */
 
-static ssize_t
-advwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t advwdt_write(struct file *file, const char __user *buf,
+						size_t count, loff_t *ppos)
 {
 	if (count) {
 		if (!nowayout) {

@@ -131,9 +131,7 @@ advwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *pp
 	return count;
 }
 
-static int
-advwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-	  unsigned long arg)
+static long advwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	int new_timeout;
 	void __user *argp = (void __user *)arg;

@@ -146,57 +144,50 @@ advwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 
 	switch (cmd) {
 	case WDIOC_GETSUPPORT:
-	  if (copy_to_user(argp, &ident, sizeof(ident)))
-	    return -EFAULT;
-	  break;
+	if (copy_to_user(argp, &ident, sizeof(ident)))
+		return -EFAULT;
+		break;
 
 	case WDIOC_GETSTATUS:
 	case WDIOC_GETBOOTSTATUS:
-	  return put_user(0, p);
+		return put_user(0, p);
 
 	case WDIOC_KEEPALIVE:
-	  advwdt_ping();
-	  break;
+		advwdt_ping();
+		break;
 
 	case WDIOC_SETTIMEOUT:
-	  if (get_user(new_timeout, p))
-		  return -EFAULT;
-	  if (advwdt_set_heartbeat(new_timeout))
-		  return -EINVAL;
-	  advwdt_ping();
-	  /* Fall */
-
+		if (get_user(new_timeout, p))
+			return -EFAULT;
+		if (advwdt_set_heartbeat(new_timeout))
+			return -EINVAL;
+		advwdt_ping();
+		/* Fall */
 	case WDIOC_GETTIMEOUT:
-	  return put_user(timeout, p);
-
+		return put_user(timeout, p);
 	case WDIOC_SETOPTIONS:
 	{
-	  int options, retval = -EINVAL;
-
-	  if (get_user(options, p))
-	    return -EFAULT;
+		int options, retval = -EINVAL;
 
-	  if (options & WDIOS_DISABLECARD) {
-	    advwdt_disable();
-	    retval = 0;
-	  }
-
-	  if (options & WDIOS_ENABLECARD) {
-	    advwdt_ping();
-	    retval = 0;
-	  }
-
-	  return retval;
+		if (get_user(options, p))
+			return -EFAULT;
+		if (options & WDIOS_DISABLECARD) {
+			advwdt_disable();
+			retval = 0;
+		}
+		if (options & WDIOS_ENABLECARD) {
+			advwdt_ping();
+			retval = 0;
+		}
+		return retval;
 	}
-
 	default:
-	  return -ENOTTY;
+		return -ENOTTY;
 	}
 	return 0;
 }
 
-static int
-advwdt_open(struct inode *inode, struct file *file)
+static int advwdt_open(struct inode *inode, struct file *file)
 {
 	if (test_and_set_bit(0, &advwdt_is_open))
 		return -EBUSY;

@@ -214,7 +205,8 @@ advwdt_close(struct inode *inode, struct file *file)
 	if (adv_expect_close == 42) {
 		advwdt_disable();
 	} else {
-		printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+		printk(KERN_CRIT PFX
+				"Unexpected close, not stopping watchdog!\n");
 		advwdt_ping();
 	}
 	clear_bit(0, &advwdt_is_open);

@@ -230,7 +222,7 @@ static const struct file_operations advwdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= advwdt_write,
-	.ioctl		= advwdt_ioctl,
+	.unlocked_ioctl	= advwdt_ioctl,
 	.open		= advwdt_open,
 	.release	= advwdt_close,
 };

@@ -245,23 +237,24 @@ static struct miscdevice advwdt_miscdev = {
  *	Init & exit routines
  */
 
-static int __devinit
-advwdt_probe(struct platform_device *dev)
+static int __devinit advwdt_probe(struct platform_device *dev)
 {
 	int ret;
 
 	if (wdt_stop != wdt_start) {
 		if (!request_region(wdt_stop, 1, WATCHDOG_NAME)) {
-			printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
-				wdt_stop);
+			printk (KERN_ERR PFX
+				"I/O address 0x%04x already in use\n",
+								wdt_stop);
 			ret = -EIO;
 			goto out;
 		}
 	}
 
 	if (!request_region(wdt_start, 1, WATCHDOG_NAME)) {
-		printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
-			wdt_start);
+		printk (KERN_ERR PFX
+				"I/O address 0x%04x already in use\n",
+								wdt_start);
 		ret = -EIO;
 		goto unreg_stop;
 	}

@@ -269,20 +262,19 @@ advwdt_probe(struct platform_device *dev)
 	/* Check that the heartbeat value is within it's range ; if not reset to the default */
 	if (advwdt_set_heartbeat(timeout)) {
 		advwdt_set_heartbeat(WATCHDOG_TIMEOUT);
-		printk (KERN_INFO PFX "timeout value must be 1<=x<=63, using %d\n",
-			timeout);
+		printk (KERN_INFO PFX
+			"timeout value must be 1<=x<=63, using %d\n", timeout);
 	}
 
 	ret = misc_register(&advwdt_miscdev);
 	if (ret != 0) {
-		printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-			WATCHDOG_MINOR, ret);
+		printk (KERN_ERR PFX
+			"cannot register miscdev on minor=%d (err=%d)\n",
+							WATCHDOG_MINOR, ret);
 		goto unreg_regions;
 	}
-
 	printk (KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
 		timeout, nowayout);
-
 out:
 	return ret;
 unreg_regions:

@@ -293,8 +285,7 @@ unreg_stop:
 	goto out;
 }
 
-static int __devexit
-advwdt_remove(struct platform_device *dev)
+static int __devexit advwdt_remove(struct platform_device *dev)
 {
 	misc_deregister(&advwdt_miscdev);
 	release_region(wdt_start,1);

@@ -304,8 +295,7 @@ advwdt_remove(struct platform_device *dev)
 	return 0;
 }
 
-static void
-advwdt_shutdown(struct platform_device *dev)
+static void advwdt_shutdown(struct platform_device *dev)
 {
 	/* Turn the WDT off if we have a soft shutdown */
 	advwdt_disable();

@@ -321,8 +311,7 @@ static struct platform_driver advwdt_driver = {
 	},
 };
 
-static int __init
-advwdt_init(void)
+static int __init advwdt_init(void)
 {
 	int err;
 

@@ -332,7 +321,8 @@ advwdt_init(void)
 	if (err)
 		return err;
 
-	advwdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+	advwdt_platform_device = platform_device_register_simple(DRV_NAME,
+								-1, NULL, 0);
 	if (IS_ERR(advwdt_platform_device)) {
 		err = PTR_ERR(advwdt_platform_device);
 		goto unreg_platform_driver;

@@ -345,8 +335,7 @@ unreg_platform_driver:
 	return err;
 }
 
-static void __exit
-advwdt_exit(void)
+static void __exit advwdt_exit(void)
 {
 	platform_device_unregister(advwdt_platform_device);
 	platform_driver_unregister(&advwdt_driver);

index 2b1fbdb..88760cb 100644
@@ -19,8 +19,8 @@
 #include <linux/fs.h>
 #include <linux/pci.h>
 
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
 #define WATCHDOG_NAME "ALi_M1535"
 #define PFX WATCHDOG_NAME ": "

@@ -30,17 +30,21 @@
 static unsigned long ali_is_open;
 static char ali_expect_release;
 static struct pci_dev *ali_pci;
-static u32 ali_timeout_bits;	/* stores the computed timeout */
+static u32 ali_timeout_bits;		/* stores the computed timeout */
 static DEFINE_SPINLOCK(ali_lock);	/* Guards the hardware */
 
 /* module parameters */
 static int timeout = WATCHDOG_TIMEOUT;
 module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (0<timeout<18000, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+		"Watchdog timeout in seconds. (0 < timeout < 18000, default="
+				__MODULE_STRING(WATCHDOG_TIMEOUT) ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+		"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 /*
  *	ali_start	-	start watchdog countdown

@@ -103,15 +107,16 @@ static void ali_keepalive(void)
 
 static int ali_settimer(int t)
 {
-	if(t < 0)
+	if (t < 0)
 		return -EINVAL;
-	else if(t < 60)
+	else if (t < 60)
 		ali_timeout_bits = t|(1<<6);
-	else if(t < 3600)
+	else if (t < 3600)
 		ali_timeout_bits = (t/60)|(1<<7);
-	else if(t < 18000)
+	else if (t < 18000)
 		ali_timeout_bits = (t/300)|(1<<6)|(1<<7);
-	else return -EINVAL;
+	else
+		return -EINVAL;
 
 	timeout = t;
 	return 0;

@@ -134,21 +139,22 @@ static int ali_settimer(int t)
  */
 
 static ssize_t ali_write(struct file *file, const char __user *data,
-			      size_t len, loff_t * ppos)
+			      size_t len, loff_t *ppos)
 {
 	/* See if we got the magic character 'V' and reload the timer */
 	if (len) {
 		if (!nowayout) {
 			size_t i;
 
-			/* note: just in case someone wrote the magic character
-			 * five months ago... */
+			/* note: just in case someone wrote the
+			   magic character five months ago... */
 			ali_expect_release = 0;
 
-			/* scan to see whether or not we got the magic character */
+			/* scan to see whether or not we got
+			   the magic character */
 			for (i = 0; i != len; i++) {
 				char c;
-				if(get_user(c, data+i))
+				if (get_user(c, data+i))
 					return -EFAULT;
 				if (c == 'V')
 					ali_expect_release = 42;

@@ -163,7 +169,6 @@ static ssize_t ali_write(struct file *file, const char __user *data,
 
 /*
  *	ali_ioctl	-	handle watchdog ioctls
- *	@inode: VFS inode
  *	@file: VFS file pointer
  *	@cmd: ioctl number
  *	@arg: arguments to the ioctl

@@ -172,8 +177,7 @@ static ssize_t ali_write(struct file *file, const char __user *data,
  *	we want an extension to enable irq ack monitoring and the like
  */
 
-static int ali_ioctl(struct inode *inode, struct file *file,
-			  unsigned int cmd, unsigned long arg)
+static long ali_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;

@@ -186,57 +190,45 @@ static int ali_ioctl(struct inode *inode, struct file *file,
 	};
 
 	switch (cmd) {
-		case WDIOC_GETSUPPORT:
-			return copy_to_user(argp, &ident,
-				sizeof (ident)) ? -EFAULT : 0;
-
-		case WDIOC_GETSTATUS:
-		case WDIOC_GETBOOTSTATUS:
-			return put_user(0, p);
-
-		case WDIOC_KEEPALIVE:
-			ali_keepalive();
-			return 0;
-
-		case WDIOC_SETOPTIONS:
-		{
-			int new_options, retval = -EINVAL;
-
-			if (get_user (new_options, p))
-				return -EFAULT;
-
-			if (new_options & WDIOS_DISABLECARD) {
-				ali_stop();
-				retval = 0;
-			}
-
-			if (new_options & WDIOS_ENABLECARD) {
-				ali_start();
-				retval = 0;
-			}
+	case WDIOC_GETSUPPORT:
+		return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
 
-			return retval;
+	case WDIOC_GETSTATUS:
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, p);
+	case WDIOC_KEEPALIVE:
+		ali_keepalive();
+		return 0;
+	case WDIOC_SETOPTIONS:
+	{
+		int new_options, retval = -EINVAL;
+
+		if (get_user(new_options, p))
+			return -EFAULT;
+		if (new_options & WDIOS_DISABLECARD) {
+			ali_stop();
+			retval = 0;
 		}
-
-		case WDIOC_SETTIMEOUT:
-		{
-			int new_timeout;
-
-			if (get_user(new_timeout, p))
-				return -EFAULT;
-
-			if (ali_settimer(new_timeout))
-			    return -EINVAL;
-
-			ali_keepalive();
-			/* Fall */
+		if (new_options & WDIOS_ENABLECARD) {
+			ali_start();
+			retval = 0;
 		}
-
-		case WDIOC_GETTIMEOUT:
-			return put_user(timeout, p);
-
-		default:
-			return -ENOTTY;
+		return retval;
+	}
+	case WDIOC_SETTIMEOUT:
+	{
+		int new_timeout;
+		if (get_user(new_timeout, p))
+			return -EFAULT;
+		if (ali_settimer(new_timeout))
+			return -EINVAL;
+		ali_keepalive();
+		/* Fall */
+	}
+	case WDIOC_GETTIMEOUT:
+		return put_user(timeout, p);
+	default:
+		return -ENOTTY;
 	}
 }
 

@@ -274,10 +266,11 @@ static int ali_release(struct inode *inode, struct file *file)
 	/*
 	 *      Shut off the timer.
 	 */
-	if (ali_expect_release == 42) {
+	if (ali_expect_release == 42)
 		ali_stop();
-	} else {
-		printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+	else {
+		printk(KERN_CRIT PFX
+				"Unexpected close, not stopping watchdog!\n");
 		ali_keepalive();
 	}
 	clear_bit(0, &ali_is_open);

@@ -292,13 +285,11 @@ static int ali_release(struct inode *inode, struct file *file)
  */
 
 
-static int ali_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int ali_notify_sys(struct notifier_block *this,
+					unsigned long code, void *unused)
 {
-	if (code==SYS_DOWN || code==SYS_HALT) {
-		/* Turn the WDT off */
-		ali_stop();
-	}
-
+	if (code == SYS_DOWN || code == SYS_HALT)
+		ali_stop();		/* Turn the WDT off */
 	return NOTIFY_DONE;
 }
 

@@ -340,10 +331,10 @@ static int __init ali_find_watchdog(void)
 
 	/* Check for the a 7101 PMU */
 	pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x7101, NULL);
-	if(pdev == NULL)
+	if (pdev == NULL)
 		return -ENODEV;
 
-	if(pci_enable_device(pdev)) {
+	if (pci_enable_device(pdev)) {
 		pci_dev_put(pdev);
 		return -EIO;
 	}

@@ -355,9 +346,12 @@ static int __init ali_find_watchdog(void)
 	 */
 	pci_read_config_dword(pdev, 0xCC, &wdog);
 
-	wdog &= ~0x3F;		/* Timer bits */
-	wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24));	/* Issued events */
-	wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9));	/* No monitor bits */
+	/* Timer bits */
+	wdog &= ~0x3F;
+	/* Issued events */
+	wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24));
+	/* No monitor bits */
+	wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9));
 
 	pci_write_config_dword(pdev, 0xCC, wdog);
 

@@ -369,12 +363,12 @@ static int __init ali_find_watchdog(void)
  */
 
 static const struct file_operations ali_fops = {
-	.owner =	THIS_MODULE,
-	.llseek =	no_llseek,
-	.write =	ali_write,
-	.ioctl =	ali_ioctl,
-	.open =		ali_open,
-	.release =	ali_release,
+	.owner 		=	THIS_MODULE,
+	.llseek 	=	no_llseek,
+	.write		=	ali_write,
+	.unlocked_ioctl =	ali_ioctl,
+	.open 		=	ali_open,
+	.release 	=	ali_release,
 };
 
 static struct miscdevice ali_miscdev = {

@@ -399,15 +393,16 @@ static int __init watchdog_init(void)
 	int ret;
 
 	/* Check whether or not the hardware watchdog is there */
-	if (ali_find_watchdog() != 0) {
+	if (ali_find_watchdog() != 0)
 		return -ENODEV;
-	}
 
-	/* Check that the timeout value is within it's range ; if not reset to the default */
+	/* Check that the timeout value is within it's range;
+	   if not reset to the default */
 	if (timeout < 1 || timeout >= 18000) {
 		timeout = WATCHDOG_TIMEOUT;
-		printk(KERN_INFO PFX "timeout value must be 0<timeout<18000, using %d\n",
-			timeout);
+		printk(KERN_INFO PFX
+		     "timeout value must be 0 < timeout < 18000, using %d\n",
+							timeout);
 	}
 
 	/* Calculate the watchdog's timeout */

@@ -415,15 +410,16 @@ static int __init watchdog_init(void)
 
 	ret = register_reboot_notifier(&ali_notifier);
 	if (ret != 0) {
-		printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
-			ret);
+		printk(KERN_ERR PFX
+			"cannot register reboot notifier (err=%d)\n", ret);
 		goto out;
 	}
 
 	ret = misc_register(&ali_miscdev);
 	if (ret != 0) {
-		printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-			WATCHDOG_MINOR, ret);
+		printk(KERN_ERR PFX
+			"cannot register miscdev on minor=%d (err=%d)\n",
+						WATCHDOG_MINOR, ret);
 		goto unreg_reboot;
 	}
 

364 lines not on this page · raw message

index 2eb48c0..673f8c0 100644
@@ -69,7 +69,8 @@ struct ar7_wdt {
 	u32 prescale;
 };
 
-static struct semaphore open_semaphore;
+static unsigned long wdt_is_open;
+static spinlock_t wdt_lock;
 static unsigned expect_close;
 
 /* XXX currently fixed, allows max margin ~68.72 secs */

@@ -154,8 +155,10 @@ static void ar7_wdt_update_margin(int new_margin)
 	u32 change;
 
 	change = new_margin * (ar7_vbus_freq() / prescale_value);
-	if (change < 1) change = 1;
-	if (change > 0xffff) change = 0xffff;
+	if (change < 1)
+		change = 1;
+	if (change > 0xffff)
+		change = 0xffff;
 	ar7_wdt_change(change);
 	margin = change * prescale_value / ar7_vbus_freq();
 	printk(KERN_INFO DRVNAME

@@ -179,7 +182,7 @@ static void ar7_wdt_disable_wdt(void)
 static int ar7_wdt_open(struct inode *inode, struct file *file)
 {
 	/* only allow one at a time */
-	if (down_trylock(&open_semaphore))
+	if (test_and_set_bit(0, &wdt_is_open))
 		return -EBUSY;
 	ar7_wdt_enable_wdt();
 	expect_close = 0;

@@ -195,9 +198,7 @@ static int ar7_wdt_release(struct inode *inode, struct file *file)
 		"will not disable the watchdog timer\n");
 	else if (!nowayout)
 		ar7_wdt_disable_wdt();
-
-	up(&open_semaphore);
-
+	clear_bit(0, &wdt_is_open);
 	return 0;
 }
 

@@ -222,7 +223,9 @@ static ssize_t ar7_wdt_write(struct file *file, const char *data,
 	if (len) {
 		size_t i;
 
+		spin_lock(&wdt_lock);
 		ar7_wdt_kick(1);
+		spin_unlock(&wdt_lock);		
 
 		expect_close = 0;
 		for (i = 0; i < len; ++i) {

@@ -237,8 +240,8 @@ static ssize_t ar7_wdt_write(struct file *file, const char *data,
 	return len;
 }
 
-static int ar7_wdt_ioctl(struct inode *inode, struct file *file,
-			 unsigned int cmd, unsigned long arg)
+static long ar7_wdt_ioctl(struct file *file,
+					unsigned int cmd, unsigned long arg)
 {
 	static struct watchdog_info ident = {
 		.identity = LONGNAME,

@@ -269,8 +272,10 @@ static int ar7_wdt_ioctl(struct inode *inode, struct file *file,
 		if (new_margin < 1)
 			return -EINVAL;
 
+		spin_lock(&wdt_lock);
 		ar7_wdt_update_margin(new_margin);
 		ar7_wdt_kick(1);
+		spin_unlock(&wdt_lock);
 
 	case WDIOC_GETTIMEOUT:
 		if (put_user(margin, (int *)arg))

@@ -282,7 +287,7 @@ static int ar7_wdt_ioctl(struct inode *inode, struct file *file,
 static const struct file_operations ar7_wdt_fops = {
 	.owner		= THIS_MODULE,
 	.write		= ar7_wdt_write,
-	.ioctl		= ar7_wdt_ioctl,
+	.unlocked_ioctl	= ar7_wdt_ioctl,
 	.open		= ar7_wdt_open,
 	.release	= ar7_wdt_release,
 };

@@ -297,6 +302,8 @@ static int __init ar7_wdt_init(void)
 {
 	int rc;
 
+	spin_lock_init(&wdt_lock);
+
 	ar7_wdt_get_regs();
 
 	if (!request_mem_region(ar7_regs_wdt, sizeof(struct ar7_wdt),

@@ -312,8 +319,6 @@ static int __init ar7_wdt_init(void)
 	ar7_wdt_prescale(prescale_value);
 	ar7_wdt_update_margin(margin);
 
-	sema_init(&open_semaphore, 1);
-
 	rc = register_reboot_notifier(&ar7_wdt_notifier);
 	if (rc) {
 		printk(KERN_ERR DRVNAME

index ae0fca5..c5dc5e9 100644
@@ -212,8 +212,8 @@ static struct watchdog_info at32_wdt_info = {
 /*
  * Handle commands from user-space.
  */
-static int at32_wdt_ioctl(struct inode *inode, struct file *file,
-		unsigned int cmd, unsigned long arg)
+static long at32_wdt_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg)
 {
 	int ret = -ENOTTY;
 	int time;

@@ -298,7 +298,7 @@ static ssize_t at32_wdt_write(struct file *file, const char __user *data,
 static const struct file_operations at32_wdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
-	.ioctl		= at32_wdt_ioctl,
+	.unlocked_ioctl	= at32_wdt_ioctl,
 	.open		= at32_wdt_open,
 	.release	= at32_wdt_close,
 	.write		= at32_wdt_write,

@@ -391,7 +391,6 @@ static int __exit at32_wdt_remove(struct platform_device *pdev)
 		wdt = NULL;
 		platform_set_drvdata(pdev, NULL);
 	}
-
 	return 0;
 }
 

index 9ff9a95..bb79f64 100644
@@ -20,7 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/types.h>
 #include <linux/watchdog.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/arch/at91_st.h>
 
 

@@ -31,11 +31,14 @@ static int wdt_time = WDT_DEFAULT_TIME;
 static int nowayout = WATCHDOG_NOWAYOUT;
 
 module_param(wdt_time, int, 0);
-MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="__MODULE_STRING(WDT_DEFAULT_TIME) ")");
+MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="
+				__MODULE_STRING(WDT_DEFAULT_TIME) ")");
 
 #ifdef CONFIG_WATCHDOG_NOWAYOUT
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+		"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 #endif
 
 

@@ -46,7 +49,7 @@ static unsigned long at91wdt_busy;
 /*
  * Disable the watchdog.
  */
-static void inline at91_wdt_stop(void)
+static inline void at91_wdt_stop(void)
 {
 	at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN);
 }

@@ -54,16 +57,17 @@ static void inline at91_wdt_stop(void)
 /*
  * Enable and reset the watchdog.
  */
-static void inline at91_wdt_start(void)
+static inline void at91_wdt_start(void)
 {
-	at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN | (((65536 * wdt_time) >> 8) & AT91_ST_WDV));
+	at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
+				(((65536 * wdt_time) >> 8) & AT91_ST_WDV));
 	at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
 }
 
 /*
  * Reload the watchdog timer.  (ie, pat the watchdog)
  */
-static void inline at91_wdt_reload(void)
+static inline void at91_wdt_reload(void)
 {
 	at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
 }

@@ -89,8 +93,9 @@ static int at91_wdt_open(struct inode *inode, struct file *file)
  */
 static int at91_wdt_close(struct inode *inode, struct file *file)
 {
+	/* Disable the watchdog when file is closed */
 	if (!nowayout)
-		at91_wdt_stop();	/* Disable the watchdog when file is closed */
+		at91_wdt_stop();
 
 	clear_bit(0, &at91wdt_busy);
 	return 0;

@@ -110,7 +115,8 @@ static int at91_wdt_settimeout(int new_time)
 	if ((new_time <= 0) || (new_time > WDT_MAX_TIME))
 		return -EINVAL;
 
-	/* Set new watchdog time. It will be used when at91_wdt_start() is called. */
+	/* Set new watchdog time. It will be used when
+	   at91_wdt_start() is called. */
 	wdt_time = new_time;
 	return 0;
 }

@@ -123,60 +129,52 @@ static struct watchdog_info at91_wdt_info = {
 /*
  * Handle commands from user-space.
  */
-static int at91_wdt_ioctl(struct inode *inode, struct file *file,
-		unsigned int cmd, unsigned long arg)
+static long at91_wdt_ioct(struct file *file,
+					unsigned int cmd, unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 	int new_value;
 
-	switch(cmd) {
-		case WDIOC_KEEPALIVE:
-			at91_wdt_reload();	/* pat the watchdog */
-			return 0;
-
-		case WDIOC_GETSUPPORT:
-			return copy_to_user(argp, &at91_wdt_info, sizeof(at91_wdt_info)) ? -EFAULT : 0;
-
-		case WDIOC_SETTIMEOUT:
-			if (get_user(new_value, p))
-				return -EFAULT;
-
-			if (at91_wdt_settimeout(new_value))
-				return -EINVAL;
-
-			/* Enable new time value */
+	switch (cmd) {
+	case WDIOC_KEEPALIVE:
+		at91_wdt_reload();	/* pat the watchdog */
+		return 0;
+	case WDIOC_GETSUPPORT:
+		return copy_to_user(argp, &at91_wdt_info,
+				sizeof(at91_wdt_info)) ? -EFAULT : 0;
+	case WDIOC_SETTIMEOUT:
+		if (get_user(new_value, p))
+			return -EFAULT;
+		if (at91_wdt_settimeout(new_value))
+			return -EINVAL;
+		/* Enable new time value */
+		at91_wdt_start();
+		/* Return current value */
+		return put_user(wdt_time, p);
+	case WDIOC_GETTIMEOUT:
+		return put_user(wdt_time, p);
+	case WDIOC_GETSTATUS:
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, p);
+	case WDIOC_SETOPTIONS:
+		if (get_user(new_value, p))
+			return -EFAULT;
+		if (new_value & WDIOS_DISABLECARD)
+			at91_wdt_stop();
+		if (new_value & WDIOS_ENABLECARD)
 			at91_wdt_start();
-
-			/* Return current value */
-			return put_user(wdt_time, p);
-
-		case WDIOC_GETTIMEOUT:
-			return put_user(wdt_time, p);
-
-		case WDIOC_GETSTATUS:
-		case WDIOC_GETBOOTSTATUS:
-			return put_user(0, p);
-
-		case WDIOC_SETOPTIONS:
-			if (get_user(new_value, p))
-				return -EFAULT;
-
-			if (new_value & WDIOS_DISABLECARD)
-				at91_wdt_stop();
-			if (new_value & WDIOS_ENABLECARD)
-				at91_wdt_start();
-			return 0;
-
-		default:
-			return -ENOTTY;
+		return 0;
+	default:
+		return -ENOTTY;
 	}
 }
 
 /*
  * Pat the watchdog whenever device is written to.
  */
-static ssize_t at91_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t at91_wdt_write(struct file *file, const char *data,
+						size_t len, loff_t *ppos)
 {
 	at91_wdt_reload();		/* pat the watchdog */
 	return len;

@@ -187,7 +185,7 @@ static ssize_t at91_wdt_write(struct file *file, const char *data, size_t len, l
 static const struct file_operations at91wdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
-	.ioctl		= at91_wdt_ioctl,
+	.unlocked_ioctl	= at91_wdt_ioctl,
 	.open		= at91_wdt_open,
 	.release	= at91_wdt_close,
 	.write		= at91_wdt_write,

@@ -211,7 +209,8 @@ static int __init at91wdt_probe(struct platform_device *pdev)
 	if (res)
 		return res;
 
-	printk("AT91 Watchdog Timer enabled (%d seconds%s)\n", wdt_time, nowayout ? ", nowayout" : "");
+	printk(KERN_INFO "AT91 Watchdog Timer enabled (%d seconds%s)\n",
+				wdt_time, nowayout ? ", nowayout" : "");
 	return 0;
 }
 

@@ -265,7 +264,8 @@ static struct platform_driver at91wdt_driver = {
 
 static int __init at91_wdt_init(void)
 {
-	/* Check that the heartbeat value is within range; if not reset to the default */
+	/* Check that the heartbeat value is within range;
+	   if not reset to the default */
 	if (at91_wdt_settimeout(wdt_time)) {
 		at91_wdt_settimeout(WDT_DEFAULT_TIME);
 		pr_info("at91_wdt: wdt_time value must be 1 <= wdt_time <= 256, using %d\n", wdt_time);

index df72f90..ec324e5 100644
@@ -30,16 +30,16 @@
 #include <linux/timer.h>
 #include <linux/completion.h>
 #include <linux/jiffies.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
+#include <linux/io.h>
+#include <linux/uaccess.h>
 #include <linux/watchdog.h>
 
 /* adjustable parameters */
 
-static int verbose = 0;
+static int verbose;
 static int port = 0x91;
 static int ticks = 10000;
+static spinlock_t cpu5wdt_lock;
 
 #define PFX			"cpu5wdt: "
 

@@ -70,12 +70,13 @@ static struct {
 
 static void cpu5wdt_trigger(unsigned long unused)
 {
-	if ( verbose > 2 )
+	if (verbose > 2)
 		printk(KERN_DEBUG PFX "trigger at %i ticks\n", ticks);
 
-	if( cpu5wdt_device.running )
+	if (cpu5wdt_device.running)
 		ticks--;
 
+	spin_lock(&cpu5wdt_lock);
 	/* keep watchdog alive */
 	outb(1, port + CPU5WDT_TRIGGER_REG);
 

@@ -86,6 +87,7 @@ static void cpu5wdt_trigger(unsigned long unused)
 		/* ticks doesn't matter anyway */
 		complete(&cpu5wdt_device.stop);
 	}
+	spin_unlock(&cpu5wdt_lock);
 
 }
 

@@ -93,14 +95,17 @@ static void cpu5wdt_reset(void)
 {
 	ticks = cpu5wdt_device.default_ticks;
 
-	if ( verbose )
+	if (verbose)
 		printk(KERN_DEBUG PFX "reset (%i ticks)\n", (int) ticks);
 
 }
 
 static void cpu5wdt_start(void)
 {
-	if ( !cpu5wdt_device.queue ) {
+	unsigned long flags;
+
+	spin_lock_irqsave(&cpu5wdt_lock, flags);
+	if (!cpu5wdt_device.queue) {
 		cpu5wdt_device.queue = 1;
 		outb(0, port + CPU5WDT_TIME_A_REG);
 		outb(0, port + CPU5WDT_TIME_B_REG);

@@ -111,18 +116,20 @@ static void cpu5wdt_start(void)
 	}
 	/* if process dies, counter is not decremented */
 	cpu5wdt_device.running++;
+	spin_unlock_irqrestore(&cpu5wdt_lock, flags);
 }
 
 static int cpu5wdt_stop(void)
 {
-	if ( cpu5wdt_device.running )
-		cpu5wdt_device.running = 0;
+	unsigned long flags;
 
+	spin_lock_irqsave(&cpu5wdt_lock, flags);
+	if (cpu5wdt_device.running)
+		cpu5wdt_device.running = 0;
 	ticks = cpu5wdt_device.default_ticks;
-
-	if ( verbose )
+	spin_unlock_irqrestore(&cpu5wdt_lock, flags);
+	if (verbose)
 		printk(KERN_CRIT PFX "stop not possible\n");
-
 	return -EIO;
 }
 

@@ -130,9 +137,8 @@ static int cpu5wdt_stop(void)
 
 static int cpu5wdt_open(struct inode *inode, struct file *file)
 {
-	if ( test_and_set_bit(0, &cpu5wdt_device.inuse) )
+	if (test_and_set_bit(0, &cpu5wdt_device.inuse))
 		return -EBUSY;
-
 	return nonseekable_open(inode, file);
 }
 

@@ -142,67 +148,58 @@ static int cpu5wdt_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int cpu5wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long cpu5wdt_ioctl(struct file *file, unsigned int cmd,
+						unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
+	int __user *p = argp;
 	unsigned int value;
-	static struct watchdog_info ident =
-	{
+	static struct watchdog_info ident = {
 		.options = WDIOF_CARDRESET,
 		.identity = "CPU5 WDT",
 	};
 
-	switch(cmd) {
-		case WDIOC_KEEPALIVE:
-			cpu5wdt_reset();
-			break;
-		case WDIOC_GETSTATUS:
-			value = inb(port + CPU5WDT_STATUS_REG);
-			value = (value >> 2) & 1;
-			if ( copy_to_user(argp, &value, sizeof(int)) )
-				return -EFAULT;
-			break;
-		case WDIOC_GETBOOTSTATUS:
-			if ( copy_to_user(argp, &value, sizeof(int)) )
-				return -EFAULT;
-			break;
-		case WDIOC_GETSUPPORT:
-			if ( copy_to_user(argp, &ident, sizeof(ident)) )
-				return -EFAULT;
-			break;
-		case WDIOC_SETOPTIONS:
-			if ( copy_from_user(&value, argp, sizeof(int)) )
-				return -EFAULT;
-			switch(value) {
-				case WDIOS_ENABLECARD:
-					cpu5wdt_start();
-					break;
-				case WDIOS_DISABLECARD:
-					return cpu5wdt_stop();
-				default:
-					return -EINVAL;
-			}
-			break;
-		default:
-    			return -ENOTTY;
+	switch (cmd) {
+	case WDIOC_KEEPALIVE:
+		cpu5wdt_reset();
+		break;
+	case WDIOC_GETSTATUS:
+		value = inb(port + CPU5WDT_STATUS_REG);
+		value = (value >> 2) & 1;
+		return put_user(value, p);
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, p);
+	case WDIOC_GETSUPPORT:
+		if (copy_to_user(argp, &ident, sizeof(ident)))
+			return -EFAULT;
+		break;
+	case WDIOC_SETOPTIONS:
+		if (get_user(value, p))
+			return -EFAULT;
+		if (value & WDIOS_ENABLECARD)
+			cpu5wdt_start();
+		if (value & WDIOS_DISABLECARD)
+			cpu5wdt_stop();
+		break;
+	default:
+		return -ENOTTY;
 	}
 	return 0;
 }
 
-static ssize_t cpu5wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t cpu5wdt_write(struct file *file, const char __user *buf,
+						size_t count, loff_t *ppos)
 {
-	if ( !count )
+	if (!count)
 		return -EIO;
-
 	cpu5wdt_reset();
-
 	return count;
 }
 
 static const struct file_operations cpu5wdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
-	.ioctl		= cpu5wdt_ioctl,
+	.unlocked_ioctl	= cpu5wdt_ioctl,
 	.open		= cpu5wdt_open,
 	.write		= cpu5wdt_write,
 	.release	= cpu5wdt_release,

@@ -221,37 +218,36 @@ static int __devinit cpu5wdt_init(void)
 	unsigned int val;
 	int err;
 
-	if ( verbose )
-		printk(KERN_DEBUG PFX "port=0x%x, verbose=%i\n", port, verbose);
+	if (verbose)
+		printk(KERN_DEBUG PFX
+				"port=0x%x, verbose=%i\n", port, verbose);
 
-	if ( !request_region(port, CPU5WDT_EXTENT, PFX) ) {
+	init_completion(&cpu5wdt_device.stop);
+	spin_lock_init(&cpu5wdt_lock);
+	cpu5wdt_device.queue = 0;
+	setup_timer(&cpu5wdt_device.timer, cpu5wdt_trigger, 0);
+	cpu5wdt_device.default_ticks = ticks;
+
+	if (!request_region(port, CPU5WDT_EXTENT, PFX)) {
 		printk(KERN_ERR PFX "request_region failed\n");
 		err = -EBUSY;
 		goto no_port;
 	}
 
-	if ( (err = misc_register(&cpu5wdt_misc)) < 0 ) {
-		printk(KERN_ERR PFX "misc_register failed\n");
-		goto no_misc;
-	}
-
 	/* watchdog reboot? */
 	val = inb(port + CPU5WDT_STATUS_REG);
 	val = (val >> 2) & 1;
-	if ( !val )
+	if (!val)
 		printk(KERN_INFO PFX "sorry, was my fault\n");
 
-	init_completion(&cpu5wdt_device.stop);
-	cpu5wdt_device.queue = 0;
-
-	clear_bit(0, &cpu5wdt_device.inuse);
-
-	setup_timer(&cpu5wdt_device.timer, cpu5wdt_trigger, 0);
+	err = misc_register(&cpu5wdt_misc);
+	if (err < 0) {
+		printk(KERN_ERR PFX "misc_register failed\n");
+		goto no_misc;
+	}
 
-	cpu5wdt_device.default_ticks = ticks;
 
 	printk(KERN_INFO PFX "init success\n");
-
 	return 0;
 
 no_misc:

@@ -267,7 +263,7 @@ static int __devinit cpu5wdt_init_module(void)
 
 static void __devexit cpu5wdt_exit(void)
 {
-	if ( cpu5wdt_device.queue ) {
+	if (cpu5wdt_device.queue) {
 		cpu5wdt_device.queue = 0;
 		wait_for_completion(&cpu5wdt_device.stop);
 	}

index 1782c79..926b59c 100644
@@ -22,10 +22,10 @@
 #include <linux/bitops.h>
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
 #include <asm/hardware.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
 
 #define MODULE_NAME "DAVINCI-WDT: "
 

@@ -143,9 +143,8 @@ static struct watchdog_info ident = {
 	.identity = "DaVinci Watchdog",
 };
 
-static int
-davinci_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-		  unsigned long arg)
+static long davinci_wdt_ioctl(struct file *file,
+					unsigned int cmd, unsigned long arg)
 {
 	int ret = -ENOTTY;
 

@@ -184,7 +183,7 @@ static const struct file_operations davinci_wdt_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
 	.write = davinci_wdt_write,
-	.ioctl = davinci_wdt_ioctl,
+	.unlocked_ioctl = davinci_wdt_ioctl,
 	.open = davinci_wdt_open,
 	.release = davinci_wdt_release,
 };

index 0e4787a..cdcdd11 100644
@@ -28,9 +28,9 @@
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include <linux/timer.h>
+#include <linux/uaccess.h>
 
 #include <asm/hardware.h>
-#include <asm/uaccess.h>
 
 #define WDT_VERSION	"0.3"
 #define PFX		"ep93xx_wdt: "

@@ -136,9 +136,8 @@ static struct watchdog_info ident = {
 	.identity = "EP93xx Watchdog",
 };
 
-static int
-ep93xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-		 unsigned long arg)
+static long ep93xx_wdt_ioctl(struct file *file,
+					unsigned int cmd, unsigned long arg)
 {
 	int ret = -ENOTTY;
 

@@ -174,8 +173,8 @@ static int ep93xx_wdt_release(struct inode *inode, struct file *file)
 	if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
 		wdt_shutdown();
 	else
-		printk(KERN_CRIT PFX "Device closed unexpectedly - "
-			"timer will not stop\n");
+		printk(KERN_CRIT PFX
+			"Device closed unexpectedly - timer will not stop\n");
 
 	clear_bit(WDT_IN_USE, &wdt_status);
 	clear_bit(WDT_OK_TO_CLOSE, &wdt_status);

@@ -186,7 +185,7 @@ static int ep93xx_wdt_release(struct inode *inode, struct file *file)
 static const struct file_operations ep93xx_wdt_fops = {
 	.owner		= THIS_MODULE,
 	.write		= ep93xx_wdt_write,
-	.ioctl		= ep93xx_wdt_ioctl,
+	.unlocked_ioctl	= ep93xx_wdt_ioctl,
 	.open		= ep93xx_wdt_open,
 	.release	= ep93xx_wdt_release,
 };

@@ -243,7 +242,9 @@ module_param(nowayout, int, 0);
 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
 
 module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+	"Watchdog timeout in seconds. (1<=timeout<=3600, default="
+				__MODULE_STRING(WATCHDOG_TIMEOUT) ")");
 
 MODULE_AUTHOR("Ray Lehtiniemi <[email protected]>,"
 		"Alessandro Zummo <[email protected]>");

index b14e9d1..b94e6ef 100644
@@ -56,14 +56,15 @@
 #include <linux/notifier.h>
 #include <linux/reboot.h>
 #include <linux/init.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
 
-#include <asm/io.h>
-#include <asm/uaccess.h>
 #include <asm/system.h>
 
 static unsigned long eurwdt_is_open;
 static int eurwdt_timeout;
 static char eur_expect_close;
+static spinlock_t eurwdt_lock;
 
 /*
  * You must set these - there is no sane way to probe for this board.

@@ -78,7 +79,9 @@ static char *ev = "int";
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+		"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 /*
  * Some symbolic names

@@ -137,7 +140,8 @@ static void eurwdt_activate_timer(void)
 {
 	eurwdt_disable_timer();
 	eurwdt_write_reg(WDT_CTRL_REG, 0x01);	/* activate the WDT */
-	eurwdt_write_reg(WDT_OUTPIN_CFG, !strcmp("int", ev) ? WDT_EVENT_INT : WDT_EVENT_REBOOT);
+	eurwdt_write_reg(WDT_OUTPIN_CFG,
+		!strcmp("int", ev) ? WDT_EVENT_INT : WDT_EVENT_REBOOT);
 
 	/* Setting interrupt line */
 	if (irq == 2 || irq > 15 || irq < 0) {

@@ -206,21 +210,21 @@ size_t count, loff_t *ppos)
 
 			for (i = 0; i != count; i++) {
 				char c;
-				if(get_user(c, buf+i))
+				if (get_user(c, buf+i))
 					return -EFAULT;
 				if (c == 'V')
 					eur_expect_close = 42;
 			}
 		}
+		spin_lock(&eurwdt_lock);
 		eurwdt_ping();	/* the default timeout */
+		spin_unlock(&eurwdt_lock);
 	}
-
 	return count;
 }
 
 /**
  * eurwdt_ioctl:
- * @inode: inode of the device
  * @file: file handle to the device
  * @cmd: watchdog command
  * @arg: argument pointer

@@ -229,13 +233,14 @@ size_t count, loff_t *ppos)
  * according to their available features.
  */
 
-static int eurwdt_ioctl(struct inode *inode, struct file *file,
-	unsigned int cmd, unsigned long arg)
+static long eurwdt_ioctl(struct file *file,
+					unsigned int cmd, unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 	static struct watchdog_info ident = {
-		.options	  = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+		.options	  = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+							| WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
 		.identity	  = "WDT Eurotech CPU-1220/1410",
 	};

@@ -243,7 +248,7 @@ static int eurwdt_ioctl(struct inode *inode, struct file *file,
 	int time;
 	int options, retval = -EINVAL;
 
-	switch(cmd) {
+	switch (cmd) {
 	default:
 		return -ENOTTY;
 

@@ -255,7 +260,9 @@ static int eurwdt_ioctl(struct inode *inode, struct file *file,
 		return put_user(0, p);
 
 	case WDIOC_KEEPALIVE:
+		spin_lock(&eurwdt_lock);
 		eurwdt_ping();
+		spin_unlock(&eurwdt_lock);
 		return 0;
 
 	case WDIOC_SETTIMEOUT:

@@ -266,8 +273,10 @@ static int eurwdt_ioctl(struct inode *inode, struct file *file,
 		if (time < 0 || time > 255)
 			return -EINVAL;
 
+		spin_lock(&eurwdt_lock);
 		eurwdt_timeout = time;
 		eurwdt_set_timeout(time);
+		spin_unlock(&eurwdt_lock);
 		/* Fall */
 
 	case WDIOC_GETTIMEOUT:

@@ -276,6 +285,7 @@ static int eurwdt_ioctl(struct inode *inode, struct file *file,
 	case WDIOC_SETOPTIONS:
 		if (get_user(options, p))
 			return -EFAULT;
+		spin_lock(&eurwdt_lock);
 		if (options & WDIOS_DISABLECARD) {
 			eurwdt_disable_timer();
 			retval = 0;

@@ -285,6 +295,7 @@ static int eurwdt_ioctl(struct inode *inode, struct file *file,
 			eurwdt_ping();
 			retval = 0;
 		}
+		spin_unlock(&eurwdt_lock);
 		return retval;
 	}
 }

@@ -322,10 +333,11 @@ static int eurwdt_open(struct inode *inode, struct file *file)
 
 static int eurwdt_release(struct inode *inode, struct file *file)
 {
-	if (eur_expect_close == 42) {
+	if (eur_expect_close == 42)
 		eurwdt_disable_timer();
-	} else {
-		printk(KERN_CRIT "eurwdt: Unexpected close, not stopping watchdog!\n");
+	else {
+		printk(KERN_CRIT
+			"eurwdt: Unexpected close, not stopping watchdog!\n");
 		eurwdt_ping();
 	}
 	clear_bit(0, &eurwdt_is_open);

@@ -362,11 +374,11 @@ static int eurwdt_notify_sys(struct notifier_block *this, unsigned long code,
 
 
 static const struct file_operations eurwdt_fops = {
-	.owner	= THIS_MODULE,
-	.llseek	= no_llseek,
-	.write	= eurwdt_write,
-	.ioctl	= eurwdt_ioctl,
-	.open	= eurwdt_open,
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.write		= eurwdt_write,
+	.unlocked_ioctl	= eurwdt_ioctl,
+	.open		= eurwdt_open,
 	.release	= eurwdt_release,
 };
 

@@ -419,7 +431,7 @@ static int __init eurwdt_init(void)
 	int ret;
 
 	ret = request_irq(irq, eurwdt_interrupt, IRQF_DISABLED, "eurwdt", NULL);
-	if(ret) {
+	if (ret) {
 		printk(KERN_ERR "eurwdt: IRQ %d is not free.\n", irq);
 		goto out;
 	}

@@ -432,10 +444,13 @@ static int __init eurwdt_init(void)
 
 	ret = register_reboot_notifier(&eurwdt_notifier);
 	if (ret) {
-		printk(KERN_ERR "eurwdt: can't register reboot notifier (err=%d)\n", ret);
+		printk(KERN_ERR
+		    "eurwdt: can't register reboot notifier (err=%d)\n", ret);
 		goto outreg;
 	}
 
+	spin_lock_init(&eurwdt_lock);
+
 	ret = misc_register(&eurwdt_miscdev);
 	if (ret) {
 		printk(KERN_ERR "eurwdt: can't misc_register on minor=%d\n",

index 6483d10..ca1dc99 100644
@@ -39,9 +39,9 @@
 #include <linux/string.h>
 #include <linux/bootmem.h>
 #include <linux/slab.h>
-#include <asm/dmi.h>
+#include <linux/dmi.h>
 #include <asm/desc.h>
-#include <asm/kdebug.h>
+#include <linux/kdebug.h>
 
 #define PCI_BIOS32_SD_VALUE		0x5F32335F	/* "_32_" */
 #define CRU_BIOS_SIGNATURE_VALUE	0x55524324

index 4b89f40..805a54b 100644
@@ -42,8 +42,8 @@
 #include <linux/moduleparam.h>
 #include <linux/platform_device.h>
 
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
 #include <asm/system.h>
 
 static struct platform_device *ibwdt_platform_device;

@@ -120,7 +120,9 @@ static int wd_margin = WD_TIMO;
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+		"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 
 /*

@@ -165,8 +167,8 @@ ibwdt_set_heartbeat(int t)
  *	/dev/watchdog handling
  */
 
-static ssize_t
-ibwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t ibwdt_write(struct file *file, const char __user *buf,
+						size_t count, loff_t *ppos)
 {
 	if (count) {
 		if (!nowayout) {

@@ -188,77 +190,71 @@ ibwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppo
 	return count;
 }
 
-static int
-ibwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-	  unsigned long arg)
+static long ibwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	int new_margin;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 
 	static struct watchdog_info ident = {
-		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+							| WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
 		.identity = "IB700 WDT",
 	};
 
 	switch (cmd) {
 	case WDIOC_GETSUPPORT:
-	  if (copy_to_user(argp, &ident, sizeof(ident)))
-	    return -EFAULT;
-	  break;
+		if (copy_to_user(argp, &ident, sizeof(ident)))
+			return -EFAULT;
+		break;
 
 	case WDIOC_GETSTATUS:
 	case WDIOC_GETBOOTSTATUS:
-	  return put_user(0, p);
+		return put_user(0, p);
 
 	case WDIOC_KEEPALIVE:
-	  ibwdt_ping();
-	  break;
+		ibwdt_ping();
+		break;
 
 	case WDIOC_SETTIMEOUT:
-	  if (get_user(new_margin, p))
-		  return -EFAULT;
-	  if (ibwdt_set_heartbeat(new_margin))
-		  return -EINVAL;
-	  ibwdt_ping();
-	  /* Fall */
+		if (get_user(new_margin, p))
+			return -EFAULT;
+		if (ibwdt_set_heartbeat(new_margin))
+			return -EINVAL;
+		ibwdt_ping();
+		/* Fall */
 
 	case WDIOC_GETTIMEOUT:
-	  return put_user(wd_times[wd_margin], p);
+		return put_user(wd_times[wd_margin], p);
 
 	case WDIOC_SETOPTIONS:
 	{
-	  int options, retval = -EINVAL;
+		int options, retval = -EINVAL;
 
-	  if (get_user(options, p))
-	    return -EFAULT;
+		if (get_user(options, p))
+			return -EFAULT;
 
-	  if (options & WDIOS_DISABLECARD) {
-	    ibwdt_disable();
-	    retval = 0;
-	  }
-
-	  if (options & WDIOS_ENABLECARD) {
-	    ibwdt_ping();
-	    retval = 0;
-	  }
-
-	  return retval;
+		if (options & WDIOS_DISABLECARD) {
+			ibwdt_disable();
+			retval = 0;
+		}
+		if (options & WDIOS_ENABLECARD) {
+			ibwdt_ping();
+			retval = 0;
+		}
+		return retval;
 	}
-
 	default:
-	  return -ENOTTY;
+		return -ENOTTY;
 	}
 	return 0;
 }
 
-static int
-ibwdt_open(struct inode *inode, struct file *file)
+static int ibwdt_open(struct inode *inode, struct file *file)
 {
-	if (test_and_set_bit(0, &ibwdt_is_open)) {
+	if (test_and_set_bit(0, &ibwdt_is_open))
 		return -EBUSY;
-	}
 	if (nowayout)
 		__module_get(THIS_MODULE);
 

@@ -273,7 +269,8 @@ ibwdt_close(struct inode *inode, struct file *file)
 	if (expect_close == 42) {
 		ibwdt_disable();
 	} else {
-		printk(KERN_CRIT PFX "WDT device closed unexpectedly.  WDT will not stop!\n");
+		printk(KERN_CRIT PFX
+		     "WDT device closed unexpectedly.  WDT will not stop!\n");
 		ibwdt_ping();
 	}
 	clear_bit(0, &ibwdt_is_open);

@@ -289,7 +286,7 @@ static const struct file_operations ibwdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= ibwdt_write,
-	.ioctl		= ibwdt_ioctl,
+	.unlocked_ioctl	= ibwdt_ioctl,
 	.open		= ibwdt_open,
 	.release	= ibwdt_close,
 };

@@ -310,21 +307,23 @@ static int __devinit ibwdt_probe(struct platform_device *dev)
 
 #if WDT_START != WDT_STOP
 	if (!request_region(WDT_STOP, 1, "IB700 WDT")) {
-		printk (KERN_ERR PFX "STOP method I/O %X is not available.\n", WDT_STOP);
+		printk(KERN_ERR PFX "STOP method I/O %X is not available.\n",
+								WDT_STOP);
 		res = -EIO;
 		goto out_nostopreg;
 	}
 #endif
 
 	if (!request_region(WDT_START, 1, "IB700 WDT")) {
-		printk (KERN_ERR PFX "START method I/O %X is not available.\n", WDT_START);
+		printk(KERN_ERR PFX "START method I/O %X is not available.\n",
+								WDT_START);
 		res = -EIO;
 		goto out_nostartreg;
 	}
 
 	res = misc_register(&ibwdt_miscdev);
 	if (res) {
-		printk (KERN_ERR PFX "failed to register misc device\n");
+		printk(KERN_ERR PFX "failed to register misc device\n");
 		goto out_nomisc;
 	}
 	return 0;

@@ -342,9 +341,9 @@ out_nostopreg:
 static int __devexit ibwdt_remove(struct platform_device *dev)
 {
 	misc_deregister(&ibwdt_miscdev);
-	release_region(WDT_START,1);
+	release_region(WDT_START, 1);
 #if WDT_START != WDT_STOP
-	release_region(WDT_STOP,1);
+	release_region(WDT_STOP, 1);
 #endif
 	return 0;
 }

@@ -369,13 +368,15 @@ static int __init ibwdt_init(void)
 {
 	int err;
 
-	printk(KERN_INFO PFX "WDT driver for IB700 single board computer initialising.\n");
+	printk(KERN_INFO PFX
+		"WDT driver for IB700 single board computer initialising.\n");
 
 	err = platform_driver_register(&ibwdt_driver);
 	if (err)
 		return err;
 
-	ibwdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+	ibwdt_platform_device = platform_device_register_simple(DRV_NAME,
+								-1, NULL, 0);
 	if (IS_ERR(ibwdt_platform_device)) {
 		err = PTR_ERR(ibwdt_platform_device);
 		goto unreg_platform_driver;

index ca44fd9..b7e1419 100644
@@ -38,9 +38,8 @@
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
 /* Module and version information */
 #define ESB_VERSION "0.03"

@@ -59,17 +58,17 @@
 #define ESB_RELOAD_REG  BASEADDR + 0x0c /* Reload register                   */
 
 /* Lock register bits */
-#define ESB_WDT_FUNC    ( 0x01 << 2 )   /* Watchdog functionality            */
-#define ESB_WDT_ENABLE  ( 0x01 << 1 )   /* Enable WDT                        */
-#define ESB_WDT_LOCK    ( 0x01 << 0 )   /* Lock (nowayout)                   */
+#define ESB_WDT_FUNC    (0x01 << 2)   /* Watchdog functionality            */
+#define ESB_WDT_ENABLE  (0x01 << 1)   /* Enable WDT                        */
+#define ESB_WDT_LOCK    (0x01 << 0)   /* Lock (nowayout)                   */
 
 /* Config register bits */
-#define ESB_WDT_REBOOT  ( 0x01 << 5 )   /* Enable reboot on timeout          */
-#define ESB_WDT_FREQ    ( 0x01 << 2 )   /* Decrement frequency               */
-#define ESB_WDT_INTTYPE ( 0x11 << 0 )   /* Interrupt type on timer1 timeout  */
+#define ESB_WDT_REBOOT  (0x01 << 5)   /* Enable reboot on timeout          */
+#define ESB_WDT_FREQ    (0x01 << 2)   /* Decrement frequency               */
+#define ESB_WDT_INTTYPE (0x11 << 0)   /* Interrupt type on timer1 timeout  */
 
 /* Reload register bits */
-#define ESB_WDT_RELOAD ( 0x01 << 8 )    /* prevent timeout                   */
+#define ESB_WDT_RELOAD  (0x01 << 8)    /* prevent timeout                   */
 
 /* Magic constants */
 #define ESB_UNLOCK1     0x80            /* Step 1 to unlock reset registers  */

@@ -84,14 +83,20 @@ static unsigned short triggered; /* The status of the watchdog upon boot */
 static char esb_expect_close;
 
 /* module parameters */
-#define WATCHDOG_HEARTBEAT 30   /* 30 sec default heartbeat (1<heartbeat<2*1023) */
+/* 30 sec default heartbeat (1 < heartbeat < 2*1023) */
+#define WATCHDOG_HEARTBEAT 30
 static int heartbeat = WATCHDOG_HEARTBEAT;  /* in seconds */
+
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (1<heartbeat<2046, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat,
+		"Watchdog heartbeat in seconds. (1<heartbeat<2046, default="
+				__MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+		"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 /*
  * Some i6300ESB specific functions

@@ -104,8 +109,8 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" _
  * to once before they need to be unlocked again.
  */
 static inline void esb_unlock_registers(void) {
-        writeb(ESB_UNLOCK1, ESB_RELOAD_REG);
-        writeb(ESB_UNLOCK2, ESB_RELOAD_REG);
+	writeb(ESB_UNLOCK1, ESB_RELOAD_REG);
+	writeb(ESB_UNLOCK2, ESB_RELOAD_REG);
 }
 
 static void esb_timer_start(void)

@@ -114,8 +119,7 @@ static void esb_timer_start(void)
 
 	/* Enable or Enable + Lock? */
 	val = 0x02 | (nowayout ? 0x01 : 0x00);
-
-        pci_write_config_byte(esb_pci, ESB_LOCK_REG, val);
+	pci_write_config_byte(esb_pci, ESB_LOCK_REG, val);
 }
 
 static int esb_timer_stop(void)

@@ -140,7 +144,7 @@ static void esb_timer_keepalive(void)
 	spin_lock(&esb_lock);
 	esb_unlock_registers();
 	writew(ESB_WDT_RELOAD, ESB_RELOAD_REG);
-        /* FIXME: Do we need to flush anything here? */
+	/* FIXME: Do we need to flush anything here? */
 	spin_unlock(&esb_lock);
 }
 

@@ -167,7 +171,7 @@ static int esb_timer_set_heartbeat(int time)
 	esb_unlock_registers();
         writel(val, ESB_TIMER2_REG);
 
-        /* Reload */
+	/* Reload */
 	esb_unlock_registers();
 	writew(ESB_WDT_RELOAD, ESB_RELOAD_REG);
 

@@ -179,54 +183,55 @@ static int esb_timer_set_heartbeat(int time)
 	return 0;
 }
 
-static int esb_timer_read (void)
+static int esb_timer_read(void)
 {
-       	u32 count;
+	u32 count;
 
 	/* This isn't documented, and doesn't take into
-         * acount which stage is running, but it looks
-         * like a 20 bit count down, so we might as well report it.
-         */
-        pci_read_config_dword(esb_pci, 0x64, &count);
-        return (int)count;
+	 * acount which stage is running, but it looks
+	 * like a 20 bit count down, so we might as well report it.
+	 */
+	pci_read_config_dword(esb_pci, 0x64, &count);
+	return (int)count;
 }
 
 /*
  * 	/dev/watchdog handling
  */
 
-static int esb_open (struct inode *inode, struct file *file)
+static int esb_open(struct inode *inode, struct file *file)
 {
-        /* /dev/watchdog can only be opened once */
-        if (test_and_set_bit(0, &timer_alive))
-                return -EBUSY;
+	/* /dev/watchdog can only be opened once */
+	if (test_and_set_bit(0, &timer_alive))
+		return -EBUSY;
 
-        /* Reload and activate timer */
-        esb_timer_keepalive ();
-        esb_timer_start ();
+	/* Reload and activate timer */
+	esb_timer_keepalive();
+	esb_timer_start();
 
 	return nonseekable_open(inode, file);
 }
 
-static int esb_release (struct inode *inode, struct file *file)
+static int esb_release(struct inode *inode, struct file *file)
 {
-        /* Shut off the timer. */
-        if (esb_expect_close == 42) {
-                esb_timer_stop ();
-        } else {
-                printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
-                esb_timer_keepalive ();
-        }
-        clear_bit(0, &timer_alive);
-        esb_expect_close = 0;
-        return 0;
+	/* Shut off the timer. */
+	if (esb_expect_close == 42)
+		esb_timer_stop();
+	else {
+		printk(KERN_CRIT PFX
+				"Unexpected close, not stopping watchdog!\n");
+		esb_timer_keepalive();
+	}
+	clear_bit(0, &timer_alive);
+	esb_expect_close = 0;
+	return 0;
 }
 
-static ssize_t esb_write (struct file *file, const char __user *data,
-			  size_t len, loff_t * ppos)
+static ssize_t esb_write(struct file *file, const char __user *data,
+			  size_t len, loff_t *ppos)
 {
 	/* See if we got the magic character 'V' and reload the timer */
-        if (len) {
+	if (len) {
 		if (!nowayout) {
 			size_t i;
 

@@ -237,7 +242,7 @@ static ssize_t esb_write (struct file *file, const char __user *data,
 			/* scan to see whether or not we got the magic character */
 			for (i = 0; i != len; i++) {
 				char c;
-				if(get_user(c, data+i))
+				if (get_user(c, data+i))
 					return -EFAULT;
 				if (c == 'V')
 					esb_expect_close = 42;

@@ -245,13 +250,12 @@ static ssize_t esb_write (struct file *file, const char __user *data,
 		}
 
 		/* someone wrote to us, we should reload the timer */
-		esb_timer_keepalive ();
+		esb_timer_keepalive();
 	}
 	return len;
 }
 
-static int esb_ioctl (struct inode *inode, struct file *file,
-		      unsigned int cmd, unsigned long arg)
+static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	int new_options, retval = -EINVAL;
 	int new_heartbeat;

@@ -266,71 +270,65 @@ static int esb_ioctl (struct inode *inode, struct file *file,
 	};
 
 	switch (cmd) {
-		case WDIOC_GETSUPPORT:
-			return copy_to_user(argp, &ident,
-					    sizeof (ident)) ? -EFAULT : 0;
-
-		case WDIOC_GETSTATUS:
-			return put_user (esb_timer_read(), p);
-
-		case WDIOC_GETBOOTSTATUS:
-			return put_user (triggered, p);
-
-                case WDIOC_KEEPALIVE:
-                        esb_timer_keepalive ();
-                        return 0;
+	case WDIOC_GETSUPPORT:
+		return copy_to_user(argp, &ident,
+					sizeof(ident)) ? -EFAULT : 0;
 
-                case WDIOC_SETOPTIONS:
-                {
-                        if (get_user (new_options, p))
-                                return -EFAULT;
+	case WDIOC_GETSTATUS:
+		return put_user(esb_timer_read(), p);
 
-                        if (new_options & WDIOS_DISABLECARD) {
-                                esb_timer_stop ();
-                                retval = 0;
-                        }
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(triggered, p);
 
-                        if (new_options & WDIOS_ENABLECARD) {
-                                esb_timer_keepalive ();
-                                esb_timer_start ();
-                                retval = 0;
-                        }
+	case WDIOC_KEEPALIVE:
+		esb_timer_keepalive();
+		return 0;
 
-                        return retval;
-                }
+	case WDIOC_SETOPTIONS:
+	{
+		if (get_user(new_options, p))
+			return -EFAULT;
 
-                case WDIOC_SETTIMEOUT:
-                {
-                        if (get_user(new_heartbeat, p))
-                                return -EFAULT;
-
-                        if (esb_timer_set_heartbeat(new_heartbeat))
-                            return -EINVAL;
-
-                        esb_timer_keepalive ();
-                        /* Fall */
-                }
-
-                case WDIOC_GETTIMEOUT:
-                        return put_user(heartbeat, p);
+		if (new_options & WDIOS_DISABLECARD) {
+			esb_timer_stop();
+			retval = 0;
+		}
 
-                default:
-                        return -ENOTTY;
-        }
+		if (new_options & WDIOS_ENABLECARD) {
+			esb_timer_keepalive();
+			esb_timer_start();
+			retval = 0;
+		}
+		return retval;
+	}
+	case WDIOC_SETTIMEOUT:
+	{
+		if (get_user(new_heartbeat, p))
+			return -EFAULT;
+		if (esb_timer_set_heartbeat(new_heartbeat))
+			return -EINVAL;
+		esb_timer_keepalive();
+		/* Fall */
+	}
+	case WDIOC_GETTIMEOUT:
+		return put_user(heartbeat, p);
+	default:
+		return -ENOTTY;
+	}
 }
 
 /*
  *      Notify system
  */
 
-static int esb_notify_sys (struct notifier_block *this, unsigned long code, void *unused)
+static int esb_notify_sys(struct notifier_block *this,
+					unsigned long code, void *unused)
 {
-        if (code==SYS_DOWN || code==SYS_HALT) {
-                /* Turn the WDT off */
-                esb_timer_stop ();
-        }
-
-        return NOTIFY_DONE;
+	if (code == SYS_DOWN || code == SYS_HALT) {
+		/* Turn the WDT off */
+		esb_timer_stop();
+	}
+	return NOTIFY_DONE;
 }
 
 /*

@@ -338,22 +336,22 @@ static int esb_notify_sys (struct notifier_block *this, unsigned long code, void
  */
 
 static const struct file_operations esb_fops = {
-        .owner =        THIS_MODULE,
-        .llseek =       no_llseek,
-        .write =        esb_write,
-        .ioctl =        esb_ioctl,
-        .open =         esb_open,
-        .release =      esb_release,
+	.owner = THIS_MODULE,
+	.llseek = no_llseek,
+	.write = esb_write,
+	.unlocked_ioctl = esb_ioctl,
+	.open = esb_open,
+	.release = esb_release,
 };
 
 static struct miscdevice esb_miscdev = {
-        .minor =        WATCHDOG_MINOR,
-        .name =         "watchdog",
-        .fops =         &esb_fops,
+	.minor = WATCHDOG_MINOR,
+	.name = "watchdog",
+	.fops = &esb_fops,
 };
 
 static struct notifier_block esb_notifier = {
-        .notifier_call =        esb_notify_sys,
+	.notifier_call = esb_notify_sys,
 };
 
 /*

@@ -365,50 +363,44 @@ static struct notifier_block esb_notifier = {
  * want to register another driver on the same PCI id.
  */
 static struct pci_device_id esb_pci_tbl[] = {
-        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9), },
-        { 0, },                 /* End of list */
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9), },
+	{ 0, },                 /* End of list */
 };
-MODULE_DEVICE_TABLE (pci, esb_pci_tbl);
+MODULE_DEVICE_TABLE(pci, esb_pci_tbl);
 
 /*
  *      Init & exit routines
  */
 
-static unsigned char __init esb_getdevice (void)
+static unsigned char __init esb_getdevice(void)
 {
 	u8 val1;
 	unsigned short val2;
+	/*
+	 *      Find the PCI device
+	 */
 
-        struct pci_dev *dev = NULL;
-        /*
-         *      Find the PCI device
-         */
-
-        for_each_pci_dev(dev) {
-                if (pci_match_id(esb_pci_tbl, dev)) {
-                        esb_pci = dev;
-                        break;
-                }
-	}
+	esb_pci = pci_get_device(PCI_VENDOR_ID_INTEL,
+					PCI_DEVICE_ID_INTEL_ESB_9, NULL);
 
-        if (esb_pci) {
-        	if (pci_enable_device(esb_pci)) {
-			printk (KERN_ERR PFX "failed to enable device\n");
+	if (esb_pci) {
+		if (pci_enable_device(esb_pci)) {
+			printk(KERN_ERR PFX "failed to enable device\n");
 			goto err_devput;
 		}
 
 		if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) {
-			printk (KERN_ERR PFX "failed to request region\n");
+			printk(KERN_ERR PFX "failed to request region\n");
 			goto err_disable;
 		}
 
 		BASEADDR = ioremap(pci_resource_start(esb_pci, 0),
 				   pci_resource_len(esb_pci, 0));
 		if (BASEADDR == NULL) {
-                	/* Something's wrong here, BASEADDR has to be set */
-			printk (KERN_ERR PFX "failed to get BASEADDR\n");
-                        goto err_release;
-                }
+			/* Something's wrong here, BASEADDR has to be set */
+			printk(KERN_ERR PFX "failed to get BASEADDR\n");
+			goto err_release;
+		}
 
 		/*
 		 * The watchdog has two timers, it can be setup so that the

@@ -425,7 +417,7 @@ static unsigned char __init esb_getdevice (void)
 		/* Check that the WDT isn't already locked */
 		pci_read_config_byte(esb_pci, ESB_LOCK_REG, &val1);
 		if (val1 & ESB_WDT_LOCK)
-			printk (KERN_WARNING PFX "nowayout already set\n");
+			printk(KERN_WARNING PFX "nowayout already set\n");
 
 		/* Set the timer to watchdog mode and disable it for now */
 		pci_write_config_byte(esb_pci, ESB_LOCK_REG, 0x00);

@@ -452,44 +444,44 @@ err_devput:
 	return 0;
 }
 
-static int __init watchdog_init (void)
+static int __init watchdog_init(void)
 {
-        int ret;
-
-        /* Check whether or not the hardware watchdog is there */
-        if (!esb_getdevice () || esb_pci == NULL)
-                return -ENODEV;
-
-        /* Check that the heartbeat value is within it's range ; if not reset to the default */
-        if (esb_timer_set_heartbeat (heartbeat)) {
-                esb_timer_set_heartbeat (WATCHDOG_HEARTBEAT);
-                printk(KERN_INFO PFX "heartbeat value must be 1<heartbeat<2046, using %d\n",
-		       heartbeat);
-        }
-
-        ret = register_reboot_notifier(&esb_notifier);
-        if (ret != 0) {
-                printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
-                        ret);
-                goto err_unmap;
-        }
-
-        ret = misc_register(&esb_miscdev);
-        if (ret != 0) {
-                printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-                        WATCHDOG_MINOR, ret);
-                goto err_notifier;
-        }
-
-        esb_timer_stop ();
-
-        printk (KERN_INFO PFX "initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
-                BASEADDR, heartbeat, nowayout);
+	int ret;
+
+	/* Check whether or not the hardware watchdog is there */
+	if (!esb_getdevice() || esb_pci == NULL)
+		return -ENODEV;
+
+	/* Check that the heartbeat value is within it's range;
+	   if not reset to the default */
+	if (esb_timer_set_heartbeat(heartbeat)) {
+        	esb_timer_set_heartbeat(WATCHDOG_HEARTBEAT);
+		printk(KERN_INFO PFX
+			"heartbeat value must be 1<heartbeat<2046, using %d\n",
+								heartbeat);
+	}
+	ret = register_reboot_notifier(&esb_notifier);
+	if (ret != 0) {
+		printk(KERN_ERR PFX
+			"cannot register reboot notifier (err=%d)\n", ret);
+		goto err_unmap;
+	}
 
-        return 0;
+	ret = misc_register(&esb_miscdev);
+	if (ret != 0) {
+		printk(KERN_ERR PFX
+			"cannot register miscdev on minor=%d (err=%d)\n",
+							WATCHDOG_MINOR, ret);
+		goto err_notifier;
+	}
+	esb_timer_stop();
+	printk(KERN_INFO PFX
+		"initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
+						BASEADDR, heartbeat, nowayout);
+	return 0;
 
 err_notifier:
-        unregister_reboot_notifier(&esb_notifier);
+	unregister_reboot_notifier(&esb_notifier);
 err_unmap:
 	iounmap(BASEADDR);
 /* err_release: */

@@ -498,18 +490,18 @@ err_unmap:
 	pci_disable_device(esb_pci);
 /* err_devput: */
 	pci_dev_put(esb_pci);
-        return ret;
+	return ret;
 }
 
-static void __exit watchdog_cleanup (void)
+static void __exit watchdog_cleanup(void)
 {
 	/* Stop the timer before we leave */
 	if (!nowayout)
-		esb_timer_stop ();
+		esb_timer_stop();
 
 	/* Deregister */
 	misc_deregister(&esb_miscdev);
-        unregister_reboot_notifier(&esb_notifier);
+	unregister_reboot_notifier(&esb_notifier);
 	iounmap(BASEADDR);
 	pci_release_region(esb_pci, 0);
 	pci_disable_device(esb_pci);

index 94155f6..6824bf8 100644
@@ -19,9 +19,8 @@
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include <linux/dmi.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
 
 
 enum {

@@ -70,10 +69,13 @@ static char asr_expect_close;
 static unsigned int asr_type, asr_base, asr_length;
 static unsigned int asr_read_addr, asr_write_addr;
 static unsigned char asr_toggle_mask, asr_disable_mask;
+static spinlock_t asr_lock;
 
-static void asr_toggle(void)
+static void __asr_toggle(void)
 {
-	unsigned char reg = inb(asr_read_addr);
+	unsigned char reg;
+
+	reg = inb(asr_read_addr);
 
 	outb(reg & ~asr_toggle_mask, asr_write_addr);
 	reg = inb(asr_read_addr);

@@ -83,12 +85,21 @@ static void asr_toggle(void)
 
 	outb(reg & ~asr_toggle_mask, asr_write_addr);
 	reg = inb(asr_read_addr);
+	spin_unlock(&asr_lock);
+}
+
+static void asr_toggle(void)
+{
+	spin_lock(&asr_lock);
+	__asr_toggle();
+	spin_unlock(&asr_lock);
 }
 
 static void asr_enable(void)
 {
 	unsigned char reg;
 
+	spin_lock(&asr_lock);
 	if (asr_type == ASMTYPE_TOPAZ) {
 		/* asr_write_addr == asr_read_addr */
 		reg = inb(asr_read_addr);

@@ -99,17 +110,21 @@ static void asr_enable(void)
 		 * First make sure the hardware timer is reset by toggling
 		 * ASR hardware timer line.
 		 */
-		asr_toggle();
+		__asr_toggle();
 
 		reg = inb(asr_read_addr);
 		outb(reg & ~asr_disable_mask, asr_write_addr);
 	}
 	reg = inb(asr_read_addr);
+	spin_unlock(&asr_lock);
 }
 
 static void asr_disable(void)
 {
-	unsigned char reg = inb(asr_read_addr);
+	unsigned char reg;
+
+	spin_lock(&asr_lock);
+	reg = inb(asr_read_addr);
 
 	if (asr_type == ASMTYPE_TOPAZ)
 		/* asr_write_addr == asr_read_addr */

@@ -122,6 +137,7 @@ static void asr_disable(void)
 		outb(reg | asr_disable_mask, asr_write_addr);
 	}
 	reg = inb(asr_read_addr);
+	spin_unlock(&asr_lock);
 }
 
 static int __init asr_get_base_address(void)

@@ -133,7 +149,8 @@ static int __init asr_get_base_address(void)
 
 	switch (asr_type) {
 	case ASMTYPE_TOPAZ:
-		/* SELECT SuperIO CHIP FOR QUERYING (WRITE 0x07 TO BOTH 0x2E and 0x2F) */
+		/* SELECT SuperIO CHIP FOR QUERYING
+		   (WRITE 0x07 TO BOTH 0x2E and 0x2F) */
 		outb(0x07, 0x2e);
 		outb(0x07, 0x2f);
 

@@ -154,14 +171,26 @@ static int __init asr_get_base_address(void)
 
 	case ASMTYPE_JASPER:
 		type = "Jaspers ";
-
-		/* FIXME: need to use pci_config_lock here, but it's not exported */
+#if 0
+		u32 r;
+		/* Suggested fix */
+		pdev = pci_get_bus_and_slot(0, DEVFN(0x1f, 0));
+		if (pdev == NULL)
+			return -ENODEV;
+		pci_read_config_dword(pdev, 0x58, &r);
+		asr_base = r & 0xFFFE;
+		pci_dev_put(pdev);
+#else
+		/* FIXME: need to use pci_config_lock here,
+		   but it's not exported */
 
 /*		spin_lock_irqsave(&pci_config_lock, flags);*/
 
 		/* Select the SuperIO chip in the PCI I/O port register */
 		outl(0x8000f858, 0xcf8);
 
+		/* BUS 0, Slot 1F, fnc 0, offset 58 */
+
 		/*
 		 * Read the base address for the SuperIO chip.
 		 * Only the lower 16 bits are valid, but the address is word

@@ -170,7 +199,7 @@ static int __init asr_get_base_address(void)
 		asr_base = inl(0xcfc) & 0xfffe;
 
 /*		spin_unlock_irqrestore(&pci_config_lock, flags);*/
-
+#endif
 		asr_read_addr = asr_write_addr =
 			asr_base + JASPER_ASR_REG_OFFSET;
 		asr_toggle_mask = JASPER_ASR_TOGGLE_MASK;

@@ -241,11 +270,10 @@ static ssize_t asr_write(struct file *file, const char __user *buf,
 	return count;
 }
 
-static int asr_ioctl(struct inode *inode, struct file *file,
-		     unsigned int cmd, unsigned long arg)
+static long asr_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	static const struct watchdog_info ident = {
-		.options =	WDIOF_KEEPALIVEPING | 
+		.options =	WDIOF_KEEPALIVEPING |
 				WDIOF_MAGICCLOSE,
 		.identity =	"IBM ASR"
 	};

@@ -254,53 +282,45 @@ static int asr_ioctl(struct inode *inode, struct file *file,
 	int heartbeat;
 
 	switch (cmd) {
-		case WDIOC_GETSUPPORT:
-			return copy_to_user(argp, &ident, sizeof(ident)) ?
-				-EFAULT : 0;
-
-		case WDIOC_GETSTATUS:
-		case WDIOC_GETBOOTSTATUS:
-			return put_user(0, p);
-
-		case WDIOC_KEEPALIVE:
+	case WDIOC_GETSUPPORT:
+		return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+	case WDIOC_GETSTATUS:
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, p);
+	case WDIOC_KEEPALIVE:
+		asr_toggle();
+		return 0;
+	/*
+	 * The hardware has a fixed timeout value, so no WDIOC_SETTIMEOUT
+	 * and WDIOC_GETTIMEOUT always returns 256.
+	 */
+	case WDIOC_GETTIMEOUT:
+		heartbeat = 256;
+		return put_user(heartbeat, p);
+	case WDIOC_SETOPTIONS:
+	{
+		int new_options, retval = -EINVAL;
+		if (get_user(new_options, p))
+			return -EFAULT;
+		if (new_options & WDIOS_DISABLECARD) {
+			asr_disable();
+			retval = 0;
+		}
+		if (new_options & WDIOS_ENABLECARD) {
+			asr_enable();
 			asr_toggle();
-			return 0;
-
-		/*
-		 * The hardware has a fixed timeout value, so no WDIOC_SETTIMEOUT
-		 * and WDIOC_GETTIMEOUT always returns 256.
-		 */
-		case WDIOC_GETTIMEOUT:
-			heartbeat = 256;
-			return put_user(heartbeat, p);
-
-		case WDIOC_SETOPTIONS: {
-			int new_options, retval = -EINVAL;
-
-			if (get_user(new_options, p))
-				return -EFAULT;
-
-			if (new_options & WDIOS_DISABLECARD) {
-				asr_disable();
-				retval = 0;
-			}
-
-			if (new_options & WDIOS_ENABLECARD) {
-				asr_enable();
-				asr_toggle();
-				retval = 0;
-			}
-
-			return retval;
+			retval = 0;
 		}
+		return retval;
+	}
+	default:
+		return -ENOTTY;
 	}
-
-	return -ENOTTY;
 }
 
 static int asr_open(struct inode *inode, struct file *file)
 {
-	if(test_and_set_bit(0, &asr_is_open))
+	if (test_and_set_bit(0, &asr_is_open))
 		return -EBUSY;
 
 	asr_toggle();

@@ -314,7 +334,8 @@ static int asr_release(struct inode *inode, struct file *file)
 	if (asr_expect_close == 42)
 		asr_disable();
 	else {
-		printk(KERN_CRIT PFX "unexpected close, not stopping watchdog!\n");
+		printk(KERN_CRIT PFX
+				"unexpected close, not stopping watchdog!\n");
 		asr_toggle();
 	}
 	clear_bit(0, &asr_is_open);

@@ -323,12 +344,12 @@ static int asr_release(struct inode *inode, struct file *file)
 }
 
 static const struct file_operations asr_fops = {
-	.owner =	THIS_MODULE,
-	.llseek	=	no_llseek,
-	.write =	asr_write,
-	.ioctl =	asr_ioctl,
-	.open =		asr_open,
-	.release =	asr_release,
+	.owner =		THIS_MODULE,
+	.llseek	=		no_llseek,
+	.write =		asr_write,
+	.unlocked_ioctl =	asr_ioctl,
+	.open =			asr_open,
+	.release =		asr_release,
 };
 
 static struct miscdevice asr_miscdev = {

@@ -367,6 +388,8 @@ static int __init ibmasr_init(void)
 	if (!asr_type)
 		return -ENODEV;
 
+	spin_lock_init(&asr_lock);
+
 	rc = asr_get_base_address();
 	if (rc)
 		return rc;

@@ -395,7 +418,9 @@ module_init(ibmasr_init);
 module_exit(ibmasr_exit);
 
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+	"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 MODULE_DESCRIPTION("IBM Automatic Server Restart driver");
 MODULE_AUTHOR("Andrey Panin");

index 788245b..0bffea3 100644
@@ -1,7 +1,8 @@
 /*
  *	IndyDog	0.3	A Hardware Watchdog Device for SGI IP22
  *
- *	(c) Copyright 2002 Guido Guenther <[email protected]>, All Rights Reserved.
+ *	(c) Copyright 2002 Guido Guenther <[email protected]>,
+ *						All Rights Reserved.
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License

@@ -22,32 +23,42 @@
 #include <linux/notifier.h>
 #include <linux/reboot.h>
 #include <linux/init.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/sgi/mc.h>
 
 #define PFX "indydog: "
-static int indydog_alive;
+static unsigned long indydog_alive;
+static spinlock_t indydog_lock;
 
 #define WATCHDOG_TIMEOUT 30		/* 30 sec default timeout */
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+		"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 static void indydog_start(void)
 {
-	u32 mc_ctrl0 = sgimc->cpuctrl0;
+	u32 mc_ctrl0;
 
+	spin_lock(&indydog_lock);
+	mc_ctrl0 = sgimc->cpuctrl0;
 	mc_ctrl0 = sgimc->cpuctrl0 | SGIMC_CCTRL0_WDOG;
 	sgimc->cpuctrl0 = mc_ctrl0;
+	spin_unlock(&indydog_lock);
 }
 
 static void indydog_stop(void)
 {
-	u32 mc_ctrl0 = sgimc->cpuctrl0;
+	u32 mc_ctrl0;
 
+	spin_lock(&indydog_lock);
+
+	mc_ctrl0 = sgimc->cpuctrl0;
 	mc_ctrl0 &= ~SGIMC_CCTRL0_WDOG;
 	sgimc->cpuctrl0 = mc_ctrl0;
+	spin_unlock(&indydog_lock);
 
 	printk(KERN_INFO PFX "Stopped watchdog timer.\n");
 }

@@ -62,7 +73,7 @@ static void indydog_ping(void)
  */
 static int indydog_open(struct inode *inode, struct file *file)
 {
-	if (indydog_alive)
+	if (test_and_set_bit(0, &indydog_alive))
 		return -EBUSY;
 
 	if (nowayout)

@@ -84,23 +95,21 @@ static int indydog_release(struct inode *inode, struct file *file)
 	 * Lock it in if it's a module and we defined ...NOWAYOUT */
 	if (!nowayout)
 		indydog_stop();		/* Turn the WDT off */
-
-	indydog_alive = 0;
-
+	clear_bit(0, &indydog_alive);
 	return 0;
 }
 
-static ssize_t indydog_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t indydog_write(struct file *file, const char *data,
+						size_t len, loff_t *ppos)
 {
 	/* Refresh the timer. */
-	if (len) {
+	if (len)
 		indydog_ping();
-	}
 	return len;
 }
 
-static int indydog_ioctl(struct inode *inode, struct file *file,
-	unsigned int cmd, unsigned long arg)
+static long indydog_ioctl(struct file *file, unsigned int cmd,
+							unsigned long arg)
 {
 	int options, retval = -EINVAL;
 	static struct watchdog_info ident = {

@@ -111,42 +120,40 @@ static int indydog_ioctl(struct inode *inode, struct file *file,
 	};
 
 	switch (cmd) {
-		default:
-			return -ENOTTY;
-		case WDIOC_GETSUPPORT:
-			if (copy_to_user((struct watchdog_info *)arg,
-					 &ident, sizeof(ident)))
-				return -EFAULT;
-			return 0;
-		case WDIOC_GETSTATUS:
-		case WDIOC_GETBOOTSTATUS:
-			return put_user(0,(int *)arg);
-		case WDIOC_KEEPALIVE:
-			indydog_ping();
-			return 0;
-		case WDIOC_GETTIMEOUT:
-			return put_user(WATCHDOG_TIMEOUT,(int *)arg);
-		case WDIOC_SETOPTIONS:
-		{
-			if (get_user(options, (int *)arg))
-				return -EFAULT;
-
-			if (options & WDIOS_DISABLECARD) {
-				indydog_stop();
-				retval = 0;
-			}
-
-			if (options & WDIOS_ENABLECARD) {
-				indydog_start();
-				retval = 0;
-			}
-
-			return retval;
+	case WDIOC_GETSUPPORT:
+		if (copy_to_user((struct watchdog_info *)arg,
+				 &ident, sizeof(ident)))
+			return -EFAULT;
+		return 0;
+	case WDIOC_GETSTATUS:
+	case WDIOC_GETBOOTSTATUS:
+		return put_user(0, (int *)arg);
+	case WDIOC_KEEPALIVE:
+		indydog_ping();
+		return 0;
+	case WDIOC_GETTIMEOUT:
+		return put_user(WATCHDOG_TIMEOUT, (int *)arg);
+	case WDIOC_SETOPTIONS:
+	{
+		if (get_user(options, (int *)arg))
+			return -EFAULT;
+		if (options & WDIOS_DISABLECARD) {
+			indydog_stop();
+			retval = 0;
+		}
+		if (options & WDIOS_ENABLECARD) {
+			indydog_start();
+			retval = 0;
 		}
+		return retval;
+	}
+	default:
+		return -ENOTTY;
 	}
 }
 
-static int indydog_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int indydog_notify_sys(struct notifier_block *this,
+					unsigned long code, void *unused)
 {
 	if (code == SYS_DOWN || code == SYS_HALT)
 		indydog_stop();		/* Turn the WDT off */

@@ -158,7 +165,7 @@ static const struct file_operations indydog_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= indydog_write,
-	.ioctl		= indydog_ioctl,
+	.unlocked_ioctl	= indydog_ioctl,
 	.open		= indydog_open,
 	.release	= indydog_release,
 };

@@ -180,17 +187,20 @@ static int __init watchdog_init(void)
 {
 	int ret;
 
+	spin_lock_init(&indydog_lock);
+
 	ret = register_reboot_notifier(&indydog_notifier);
 	if (ret) {
-		printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
-			ret);
+		printk(KERN_ERR PFX
+			"cannot register reboot notifier (err=%d)\n", ret);
 		return ret;
 	}
 
 	ret = misc_register(&indydog_miscdev);
 	if (ret) {
-		printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-			WATCHDOG_MINOR, ret);
+		printk(KERN_ERR PFX
+			"cannot register miscdev on minor=%d (err=%d)\n",
+							WATCHDOG_MINOR, ret);
 		unregister_reboot_notifier(&indydog_notifier);
 		return ret;
 	}