Remove unnecessary casts of private_data

index d89ab80..9939857 100644
@@ -185,7 +185,7 @@ static volatile unsigned long *dir_oe[NUM_PORTS] = {
 static unsigned int gpio_poll(struct file *file, struct poll_table_struct *wait)
 {
 	unsigned int mask = 0;
-	struct gpio_private *priv = (struct gpio_private *)file->private_data;
+	struct gpio_private *priv = file->private_data;
 	unsigned long data;
 	poll_wait(file, &priv->alarm_wq, wait);
 	if (priv->minor == GPIO_MINOR_A) {

@@ -353,7 +353,7 @@ gpio_pa_interrupt(int irq, void *dev_id)
 static ssize_t gpio_write(struct file *file, const char *buf, size_t count,
 	loff_t *off)
 {
-	struct gpio_private *priv = (struct gpio_private *)file->private_data;
+	struct gpio_private *priv = file->private_data;
 	unsigned char data, clk_mask, data_mask, write_msb;
 	unsigned long flags;
 	unsigned long shadow;

@@ -468,7 +468,7 @@ gpio_release(struct inode *inode, struct file *filp)
 
 	spin_lock_irq(&alarm_lock);
 	p = alarmlist;
-	todel = (struct gpio_private *)filp->private_data;
+	todel = filp->private_data;
 
 	if (p == todel) {
 		alarmlist = todel->next;

@@ -567,7 +567,7 @@ gpio_ioctl(struct inode *inode, struct file *file,
 	unsigned long flags;
 	unsigned long val;
 	unsigned long shadow;
-	struct gpio_private *priv = (struct gpio_private *)file->private_data;
+	struct gpio_private *priv = file->private_data;
 	if (_IOC_TYPE(cmd) != ETRAXGPIO_IOCTYPE)
 		return -EINVAL;
 

@@ -714,7 +714,7 @@ virtual_gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	unsigned long flags;
 	unsigned short val;
 	unsigned short shadow;
-	struct gpio_private *priv = (struct gpio_private *)file->private_data;
+	struct gpio_private *priv = file->private_data;
 
 	switch (_IOC_NR(cmd)) {
 	case IO_SETBITS:

index 7443290..9b6580c 100644
@@ -1573,7 +1573,7 @@ pfm_read(struct file *filp, char __user *buf, size_t size, loff_t *ppos)
 		return -EINVAL;
 	}
 
-	ctx = (pfm_context_t *)filp->private_data;
+	ctx = filp->private_data;
 	if (ctx = NULL) {
 		printk(KERN_ERR "perfmon: pfm_read: NULL ctx [%d]\n", task_pid_nr(current));
 		return -EINVAL;

@@ -1673,7 +1673,7 @@ pfm_poll(struct file *filp, poll_table * wait)
 		return 0;
 	}
 
-	ctx = (pfm_context_t *)filp->private_data;
+	ctx = filp->private_data;
 	if (ctx = NULL) {
 		printk(KERN_ERR "perfmon: pfm_poll: NULL ctx [%d]\n", task_pid_nr(current));
 		return 0;

@@ -1733,7 +1733,7 @@ pfm_fasync(int fd, struct file *filp, int on)
 		return -EBADF;
 	}
 
-	ctx = (pfm_context_t *)filp->private_data;
+	ctx = filp->private_data;
 	if (ctx = NULL) {
 		printk(KERN_ERR "perfmon: pfm_fasync NULL ctx [%d]\n", task_pid_nr(current));
 		return -EBADF;

@@ -1841,7 +1841,7 @@ pfm_flush(struct file *filp, fl_owner_t id)
 		return -EBADF;
 	}
 
-	ctx = (pfm_context_t *)filp->private_data;
+	ctx = filp->private_data;
 	if (ctx = NULL) {
 		printk(KERN_ERR "perfmon: pfm_flush: NULL ctx [%d]\n", task_pid_nr(current));
 		return -EBADF;

@@ -1984,7 +1984,7 @@ pfm_close(struct inode *inode, struct file *filp)
 		return -EBADF;
 	}
 	
-	ctx = (pfm_context_t *)filp->private_data;
+	ctx = filp->private_data;
 	if (ctx = NULL) {
 		printk(KERN_ERR "perfmon: pfm_close: NULL ctx [%d]\n", task_pid_nr(current));
 		return -EBADF;

@@ -4906,7 +4906,7 @@ restart_args:
 		goto error_args;
 	}
 
-	ctx = (pfm_context_t *)file->private_data;
+	ctx = file->private_data;
 	if (unlikely(ctx = NULL)) {
 		DPRINT(("no context for fd %d\n", fd));
 		goto error_args;

index 7037855..46fa04f 100644
@@ -182,7 +182,7 @@ static ssize_t kvmppc_exit_timing_write(struct file *file,
 	}
 
 	if (c == 'c') {
-		struct seq_file *seqf = (struct seq_file *)file->private_data;
+		struct seq_file *seqf = file->private_data;
 		struct kvm_vcpu *vcpu = seqf->private;
 		/* Write does not affect our buffers previously generated with
 		 * show. seq_file is locked here to prevent races of init with

index 9819226..39439c7 100644
@@ -531,7 +531,7 @@ debug_output(struct file *file,		/* file descriptor */
 	size_t entry_offset;
 	file_private_info_t *p_info;
 
-	p_info = ((file_private_info_t *) file->private_data);
+	p_info = file->private_data;
 	if (*offset != p_info->offset) 
 		return -EPIPE;
 	if(p_info->act_area >= p_info->debug_info_snap->nr_areas)

@@ -581,7 +581,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length,
 	file_private_info_t *p_info;
 
 	mutex_lock(&debug_mutex);
-	p_info = ((file_private_info_t *) file->private_data);
+	p_info = file->private_data;
 	if (p_info->view->input_proc)
 		rc = p_info->view->input_proc(p_info->debug_info_org,
 					      p_info->view, file, user_buf,

@@ -671,7 +671,7 @@ static int
 debug_close(struct inode *inode, struct file *file)
 {
 	file_private_info_t *p_info;
-	p_info = (file_private_info_t *) file->private_data;
+	p_info = file->private_data;
 	if(p_info->debug_info_snap)
 		debug_info_free(p_info->debug_info_snap);
 	debug_info_put(p_info->debug_info_org);

index b50b41d..54739b0 100644
@@ -216,7 +216,7 @@ static const struct file_operations btmrvl_gpiogap_fops = {
 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
 						size_t count, loff_t *ppos)
 {
-	struct btmrvl_private *priv = (struct btmrvl_private *) file->private_data;
+	struct btmrvl_private *priv = file->private_data;
 	char buf[16];
 	long result, ret;
 

index 32b74de..ae6aa91 100644
@@ -129,7 +129,7 @@ scdrv_open(struct inode *inode, struct file *file)
 static int
 scdrv_release(struct inode *inode, struct file *file)
 {
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
+	struct subch_data_s *sd = file->private_data;
 	int rv;
 
 	/* free the interrupt */

@@ -161,7 +161,7 @@ scdrv_read(struct file *file, char __user *buf, size_t count, loff_t *f_pos)
 	int status;
 	int len;
 	unsigned long flags;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
+	struct subch_data_s *sd = file->private_data;
 
 	/* try to get control of the read buffer */
 	if (down_trylock(&sd->sd_rbs)) {

@@ -253,7 +253,7 @@ scdrv_write(struct file *file, const char __user *buf,
 {
 	unsigned long flags;
 	int status;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
+	struct subch_data_s *sd = file->private_data;
 
 	/* try to get control of the write buffer */
 	if (down_trylock(&sd->sd_wbs)) {

@@ -326,7 +326,7 @@ scdrv_poll(struct file *file, struct poll_table_struct *wait)
 {
 	unsigned int mask = 0;
 	int status = 0;
-	struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
+	struct subch_data_s *sd = file->private_data;
 	unsigned long flags;
 
 	poll_wait(file, &sd->sd_rq, wait);

index e9918d8..6bacaa1 100644
@@ -631,7 +631,7 @@ int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
 		return drm_mmap(filp, vma);
 	}
 
-	file_priv = (struct drm_file *)filp->private_data;
+	file_priv = filp->private_data;
 	rdev = file_priv->minor->dev->dev_private;
 	if (rdev == NULL) {
 		return -EINVAL;

index e6a1eb7..dc043c3 100644
@@ -542,7 +542,7 @@ int vmw_fifo_mmap(struct file *filp, struct vm_area_struct *vma)
 	struct drm_file *file_priv;
 	struct vmw_private *dev_priv;
 
-	file_priv = (struct drm_file *)filp->private_data;
+	file_priv = filp->private_data;
 	dev_priv = vmw_priv(file_priv->minor->dev);
 
 	if (vma->vm_pgoff != (dev_priv->mmio_start >> PAGE_SHIFT) ||

index e3df4ad..730951b 100644
@@ -39,7 +39,7 @@ int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
 		return drm_mmap(filp, vma);
 	}
 
-	file_priv = (struct drm_file *)filp->private_data;
+	file_priv = filp->private_data;
 	dev_priv = vmw_priv(file_priv->minor->dev);
 	return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
 }

index f8fcbd0..c5a031b 100644
@@ -172,7 +172,7 @@ static DEFINE_SPINLOCK(dv1394_cards_lock);
 
 static inline struct video_card* file_to_video_card(struct file *file)
 {
-	return (struct video_card*) file->private_data;
+	return file->private_data;
 }
 
 /*** FRAME METHODS *********************************************************/

@@ -1783,7 +1783,7 @@ static int dv1394_open(struct inode *inode, struct file *file)
 	struct video_card *video = NULL;
 
 	if (file->private_data) {
-		video = (struct video_card*) file->private_data;
+		video = file->private_data;
 
 	} else {
 		/* look up the card by ID */

index 2c417ae..f340142 100644
@@ -440,7 +440,7 @@ static struct pending_request *next_complete_req(struct file_info *fi)
 static ssize_t raw1394_read(struct file *file, char __user * buffer,
 			    size_t count, loff_t * offset_is_ignored)
 {
-	struct file_info *fi = (struct file_info *)file->private_data;
+	struct file_info *fi = file->private_data;
 	struct pending_request *req;
 	ssize_t ret;
 

@@ -2244,7 +2244,7 @@ static int state_connected(struct file_info *fi, struct pending_request *req)
 static ssize_t raw1394_write(struct file *file, const char __user * buffer,
 			     size_t count, loff_t * offset_is_ignored)
 {
-	struct file_info *fi = (struct file_info *)file->private_data;
+	struct file_info *fi = file->private_data;
 	struct pending_request *req;
 	ssize_t retval = -EBADFD;
 

index a77483b..5c74f79 100644
@@ -720,7 +720,7 @@ static inline unsigned video1394_buffer_state(struct dma_iso_ctx *d,
 static long video1394_ioctl(struct file *file,
 			    unsigned int cmd, unsigned long arg)
 {
-	struct file_ctx *ctx = (struct file_ctx *)file->private_data;
+	struct file_ctx *ctx = file->private_data;
 	struct ti_ohci *ohci = ctx->ohci;
 	unsigned long flags;
 	void __user *argp = (void __user *)arg;

@@ -1172,7 +1172,7 @@ static long video1394_ioctl(struct file *file,
 
 static int video1394_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	struct file_ctx *ctx = (struct file_ctx *)file->private_data;
+	struct file_ctx *ctx = file->private_data;
 
 	if (ctx->current_ctx == NULL) {
 		PRINT(KERN_ERR, ctx->ohci->host->id,

@@ -1239,7 +1239,7 @@ static int video1394_open(struct inode *inode, struct file *file)
 
 static int video1394_release(struct inode *inode, struct file *file)
 {
-	struct file_ctx *ctx = (struct file_ctx *)file->private_data;
+	struct file_ctx *ctx = file->private_data;
 	struct ti_ohci *ohci = ctx->ohci;
 	struct list_head *lh, *next;
 	u64 mask;

index 9c5c66d..65eb892 100644
@@ -2055,7 +2055,7 @@ static int ipath_close(struct inode *in, struct file *fp)
 
 	mutex_lock(&ipath_mutex);
 
-	fd = (struct ipath_filedata *) fp->private_data;
+	fd = fp->private_data;
 	fp->private_data = NULL;
 	pd = fd->pd;
 	if (!pd) {

index 0cabe31..c2d4ba4 100644
@@ -691,7 +691,7 @@ unlock_out:
 static ssize_t
 capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
-	struct capidev *cdev = (struct capidev *)file->private_data;
+	struct capidev *cdev = file->private_data;
 	struct sk_buff *skb;
 	size_t copied;
 	int err;

@@ -726,7 +726,7 @@ capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 static ssize_t
 capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
-	struct capidev *cdev = (struct capidev *)file->private_data;
+	struct capidev *cdev = file->private_data;
 	struct sk_buff *skb;
 	u16 mlen;
 

@@ -773,7 +773,7 @@ capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos
 static unsigned int
 capi_poll(struct file *file, poll_table * wait)
 {
-	struct capidev *cdev = (struct capidev *)file->private_data;
+	struct capidev *cdev = file->private_data;
 	unsigned int mask = 0;
 
 	if (!cdev->ap.applid)

index e83f6fd..c58a72d 100644
@@ -157,7 +157,7 @@ hysdn_log_write(struct file *file, const char __user *buf, size_t count, loff_t
 	int found = 0;
 	unsigned char *cp, valbuf[128];
 	long base = 10;
-	hysdn_card *card = (hysdn_card *) file->private_data;
+	hysdn_card *card = file->private_data;
 
 	if (count > (sizeof(valbuf) - 1))
 		count = sizeof(valbuf) - 1;	/* limit length */

index 8c46bae..fe824e0 100644
@@ -477,7 +477,7 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
 	struct isdn_ppp_comp_data data;
 	void __user *argp = (void __user *)arg;
 
-	is = (struct ippp_struct *) file->private_data;
+	is = file->private_data;
 	lp = is->lp;
 
 	if (is->debug & 0x1)

index 0195dd5..65c125e 100644
@@ -407,7 +407,7 @@ static int display_close(struct inode *inode, struct file *file)
 	struct imon_context *ictx = NULL;
 	int retval = 0;
 
-	ictx = (struct imon_context *)file->private_data;
+	ictx = file->private_data;
 
 	if (!ictx) {
 		err("%s: no context for device", __func__);

@@ -812,7 +812,7 @@ static ssize_t vfd_write(struct file *file, const char *buf,
 	const unsigned char vfd_packet6[] = {
 		0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
 
-	ictx = (struct imon_context *)file->private_data;
+	ictx = file->private_data;
 	if (!ictx) {
 		err("%s: no context for device", __func__);
 		return -ENODEV;

@@ -896,7 +896,7 @@ static ssize_t lcd_write(struct file *file, const char *buf,
 	int retval = 0;
 	struct imon_context *ictx;
 
-	ictx = (struct imon_context *)file->private_data;
+	ictx = file->private_data;
 	if (!ictx) {
 		err("%s: no context for device", __func__);
 		return -ENODEV;

index 74e2b56..8224c30 100644
@@ -375,7 +375,7 @@ static void vbi_init(struct saa7146_dev *dev, struct saa7146_vv *vv)
 
 static int vbi_open(struct saa7146_dev *dev, struct file *file)
 {
-	struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data;
+	struct saa7146_fh *fh = file->private_data;
 
 	u32 arbtr_ctrl	= saa7146_read(dev, PCI_BT_V1);
 	int ret = 0;

@@ -437,7 +437,7 @@ static int vbi_open(struct saa7146_dev *dev, struct file *file)
 
 static void vbi_close(struct saa7146_dev *dev, struct file *file)
 {
-	struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data;
+	struct saa7146_fh *fh = file->private_data;
 	struct saa7146_vv *vv = dev->vv_data;
 	DEB_VBI(("dev:%p, fh:%p\n",dev,fh));
 

index b8b2c55..a212a91 100644
@@ -1370,7 +1370,7 @@ static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv)
 
 static int video_open(struct saa7146_dev *dev, struct file *file)
 {
-	struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data;
+	struct saa7146_fh *fh = file->private_data;
 	struct saa7146_format *sfmt;
 
 	fh->video_fmt.width = 384;

@@ -1394,7 +1394,7 @@ static int video_open(struct saa7146_dev *dev, struct file *file)
 
 static void video_close(struct saa7146_dev *dev, struct file *file)
 {
-	struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data;
+	struct saa7146_fh *fh = file->private_data;
 	struct saa7146_vv *vv = dev->vv_data;
 	struct videobuf_queue *q = &fh->video_q;
 	int err;

index 770243c..cf87051 100644
@@ -565,7 +565,7 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
 	int result = 0;
 
 	lock_kernel();
-	dvbdev = (struct dvb_device *)file->private_data;
+	dvbdev = file->private_data;
 	state = (struct dst_state *)dvbdev->priv;
 	p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL);
 	p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL);

index 20eaf38..d679240 100644
@@ -1081,7 +1081,7 @@ long cx18_v4l2_ioctl(struct file *filp, unsigned int cmd,
 		    unsigned long arg)
 {
 	struct video_device *vfd = video_devdata(filp);
-	struct cx18_open_id *id = (struct cx18_open_id *)filp->private_data;
+	struct cx18_open_id *id = filp->private_data;
 	struct cx18 *cx = id->cx;
 	long res;
 

index 9209d5b..4f383cd 100644
@@ -739,7 +739,7 @@ static int __devinit snd_cx88_create(struct snd_card *card,
 
 	pci_set_master(pci);
 
-	chip = (snd_cx88_card_t *) card->private_data;
+	chip = card->private_data;
 
 	core = cx88_core_get(pci);
 	if (NULL == core) {

index c338f3f..4863a21 100644
@@ -394,7 +394,7 @@ err:
 
 static int hdpvr_release(struct file *file)
 {
-	struct hdpvr_fh		*fh  = (struct hdpvr_fh *)file->private_data;
+	struct hdpvr_fh		*fh  = file->private_data;
 	struct hdpvr_device	*dev = fh->dev;
 
 	if (!dev)

@@ -518,7 +518,7 @@ err:
 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
 {
 	struct hdpvr_buffer *buf = NULL;
-	struct hdpvr_fh *fh = (struct hdpvr_fh *)filp->private_data;
+	struct hdpvr_fh *fh = filp->private_data;
 	struct hdpvr_device *dev = fh->dev;
 	unsigned int mask = 0;
 

index 554eaf1..7fd54bf 100644
@@ -903,14 +903,14 @@ static int m2mtest_release(struct file *file)
 static unsigned int m2mtest_poll(struct file *file,
 				 struct poll_table_struct *wait)
 {
-	struct m2mtest_ctx *ctx = (struct m2mtest_ctx *)file->private_data;
+	struct m2mtest_ctx *ctx = file->private_data;
 
 	return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
 }
 
 static int m2mtest_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	struct m2mtest_ctx *ctx = (struct m2mtest_ctx *)file->private_data;
+	struct m2mtest_ctx *ctx = file->private_data;
 
 	return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
 }

index 68b7e8d..10460fd 100644
@@ -1080,7 +1080,7 @@ static int alsa_card_saa7134_create(struct saa7134_dev *dev, int devnum)
 	/* Card "creation" */
 
 	card->private_free = snd_saa7134_free;
-	chip = (snd_card_saa7134_t *) card->private_data;
+	chip = card->private_data;
 
 	spin_lock_init(&chip->lock);
 	spin_lock_init(&chip->mixer_lock);

index 369ce06..86db326 100644
@@ -516,7 +516,7 @@ static int uvc_v4l2_open(struct file *file)
 
 static int uvc_v4l2_release(struct file *file)
 {
-	struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
+	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
 	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_release\n");

@@ -547,7 +547,7 @@ static int uvc_v4l2_release(struct file *file)
 static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 {
 	struct video_device *vdev = video_devdata(file);
-	struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
+	struct uvc_fh *handle = file->private_data;
 	struct uvc_video_chain *chain = handle->chain;
 	struct uvc_streaming *stream = handle->stream;
 	long ret = 0;

@@ -1116,7 +1116,7 @@ static const struct vm_operations_struct uvc_vm_ops = {
 
 static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
+	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 	struct uvc_video_queue *queue = &stream->queue;
 	struct uvc_buffer *uninitialized_var(buffer);

@@ -1171,7 +1171,7 @@ done:
 
 static unsigned int uvc_v4l2_poll(struct file *file, poll_table *wait)
 {
-	struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
+	struct uvc_fh *handle = file->private_data;
 	struct uvc_streaming *stream = handle->stream;
 
 	uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_poll\n");

index 8844a3f..8d650d6 100644
@@ -517,7 +517,7 @@ static int remote_settings_file_close(struct inode *inode, struct file *file)
 
 static ssize_t remote_settings_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
 {
-	void __iomem *address = (void __iomem *)file->private_data;
+	void __iomem *address = file->private_data;
 	unsigned char *page;
 	int retval;
 	int len = 0;

@@ -551,7 +551,7 @@ exit:
 
 static ssize_t remote_settings_file_write(struct file *file, const char __user *ubuff, size_t count, loff_t *offset)
 {
-	void __iomem *address = (void __iomem *)file->private_data;
+	void __iomem *address = file->private_data;
 	char *buff;
 	unsigned int value;
 

index 03049e8..6c94803 100644
@@ -134,7 +134,7 @@ static ssize_t dbgfs_state(struct file *file, char __user *user_buf,
 	char *buf;
 	int len = 0;
 	ssize_t size;
-	struct cfspi *cfspi = (struct cfspi *)file->private_data;
+	struct cfspi *cfspi = file->private_data;
 
 	buf = kzalloc(DEBUGFS_BUF_SIZE, GFP_KERNEL);
 	if (!buf)

@@ -205,7 +205,7 @@ static ssize_t dbgfs_frame(struct file *file, char __user *user_buf,
 	ssize_t size;
 	struct cfspi *cfspi;
 
-	cfspi = (struct cfspi *)file->private_data;
+	cfspi = file->private_data;
 	buf = kzalloc(DEBUGFS_BUF_SIZE, GFP_KERNEL);
 	if (!buf)
 		return 0;

index 6b605df..115442b 100644
@@ -4657,7 +4657,7 @@ static ssize_t proc_write( struct file *file,
 			   loff_t *offset )
 {
 	loff_t pos = *offset;
-	struct proc_data *priv = (struct proc_data*)file->private_data;
+	struct proc_data *priv = file->private_data;
 
 	if (!priv->wbuffer)
 		return -EINVAL;

@@ -4689,7 +4689,7 @@ static int proc_status_open(struct inode *inode, struct file *file)
 
 	if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
 		return -ENOMEM;
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ((data->rbuffer = kmalloc( 2048, GFP_KERNEL )) == NULL) {
 		kfree (file->private_data);
 		return -ENOMEM;

@@ -4772,7 +4772,7 @@ static int proc_stats_rid_open( struct inode *inode,
 
 	if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
 		return -ENOMEM;
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ((data->rbuffer = kmalloc( 4096, GFP_KERNEL )) == NULL) {
 		kfree (file->private_data);
 		return -ENOMEM;

@@ -5045,7 +5045,7 @@ static int proc_config_open(struct inode *inode, struct file *file)
 
 	if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
 		return -ENOMEM;
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ((data->rbuffer = kmalloc( 2048, GFP_KERNEL )) == NULL) {
 		kfree (file->private_data);
 		return -ENOMEM;

@@ -5127,7 +5127,7 @@ static int proc_config_open(struct inode *inode, struct file *file)
 
 static void proc_SSID_on_close(struct inode *inode, struct file *file)
 {
-	struct proc_data *data = (struct proc_data *)file->private_data;
+	struct proc_data *data = file->private_data;
 	struct proc_dir_entry *dp = PDE(inode);
 	struct net_device *dev = dp->data;
 	struct airo_info *ai = dev->ml_priv;

@@ -5163,7 +5163,7 @@ static void proc_SSID_on_close(struct inode *inode, struct file *file)
 }
 
 static void proc_APList_on_close( struct inode *inode, struct file *file ) {
-	struct proc_data *data = (struct proc_data *)file->private_data;
+	struct proc_data *data = file->private_data;
 	struct proc_dir_entry *dp = PDE(inode);
 	struct net_device *dev = dp->data;
 	struct airo_info *ai = dev->ml_priv;

@@ -5309,7 +5309,7 @@ static void proc_wepkey_on_close( struct inode *inode, struct file *file ) {
 
 	memset(key, 0, sizeof(key));
 
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ( !data->writelen ) return;
 
 	if (data->wbuffer[0] >= '0' && data->wbuffer[0] <= '3' &&

@@ -5363,7 +5363,7 @@ static int proc_wepkey_open( struct inode *inode, struct file *file )
 	if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
 		return -ENOMEM;
 	memset(&wkr, 0, sizeof(wkr));
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ((data->rbuffer = kzalloc( 180, GFP_KERNEL )) == NULL) {
 		kfree (file->private_data);
 		return -ENOMEM;

@@ -5409,7 +5409,7 @@ static int proc_SSID_open(struct inode *inode, struct file *file)
 
 	if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
 		return -ENOMEM;
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ((data->rbuffer = kmalloc( 104, GFP_KERNEL )) == NULL) {
 		kfree (file->private_data);
 		return -ENOMEM;

@@ -5453,7 +5453,7 @@ static int proc_APList_open( struct inode *inode, struct file *file ) {
 
 	if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
 		return -ENOMEM;
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ((data->rbuffer = kmalloc( 104, GFP_KERNEL )) == NULL) {
 		kfree (file->private_data);
 		return -ENOMEM;

@@ -5495,7 +5495,7 @@ static int proc_BSSList_open( struct inode *inode, struct file *file ) {
 
 	if ((file->private_data = kzalloc(sizeof(struct proc_data ), GFP_KERNEL)) == NULL)
 		return -ENOMEM;
-	data = (struct proc_data *)file->private_data;
+	data = file->private_data;
 	if ((data->rbuffer = kmalloc( 1024, GFP_KERNEL )) == NULL) {
 		kfree (file->private_data);
 		return -ENOMEM;

index e38ca66..47f7603 100644
@@ -492,8 +492,7 @@ static int ath9k_debugfs_open(struct inode *inode, struct file *file)
 static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
 				   size_t count, loff_t *ppos)
 {
-	struct ath9k_htc_priv *priv =
-		(struct ath9k_htc_priv *) file->private_data;
+	struct ath9k_htc_priv *priv = file->private_data;
 	struct ath9k_htc_target_stats cmd_rsp;
 	char buf[512];
 	unsigned int len = 0;

@@ -536,8 +535,7 @@ static const struct file_operations fops_tgt_stats = {
 static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
 			      size_t count, loff_t *ppos)
 {
-	struct ath9k_htc_priv *priv =
-		(struct ath9k_htc_priv *) file->private_data;
+	struct ath9k_htc_priv *priv = file->private_data;
 	char buf[512];
 	unsigned int len = 0;
 

@@ -582,8 +580,7 @@ static const struct file_operations fops_xmit = {
 static ssize_t read_file_recv(struct file *file, char __user *user_buf,
 			      size_t count, loff_t *ppos)
 {
-	struct ath9k_htc_priv *priv =
-		(struct ath9k_htc_priv *) file->private_data;
+	struct ath9k_htc_priv *priv = file->private_data;
 	char buf[512];
 	unsigned int len = 0;
 

index 088a2c1..7b25d14 100644
@@ -1267,7 +1267,7 @@ static ssize_t iwl_dbgfs_ucode_tracing_read(struct file *file,
 					char __user *user_buf,
 					size_t count, loff_t *ppos) {
 
-	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+	struct iwl_priv *priv = file->private_data;
 	int pos = 0;
 	char buf[128];
 	const size_t bufsz = sizeof(buf);

@@ -1317,7 +1317,7 @@ static ssize_t iwl_dbgfs_rxon_flags_read(struct file *file,
 					 char __user *user_buf,
 					 size_t count, loff_t *ppos) {
 
-	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+	struct iwl_priv *priv = file->private_data;
 	int len = 0;
 	char buf[20];
 

@@ -1329,7 +1329,7 @@ static ssize_t iwl_dbgfs_rxon_filter_flags_read(struct file *file,
 						char __user *user_buf,
 						size_t count, loff_t *ppos) {
 
-	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+	struct iwl_priv *priv = file->private_data;
 	int len = 0;
 	char buf[20];
 

@@ -1342,7 +1342,7 @@ static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
 					 char __user *user_buf,
 					 size_t count, loff_t *ppos)
 {
-	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+	struct iwl_priv *priv = file->private_data;
 	char *buf;
 	int pos = 0;
 	ssize_t ret = -EFAULT;

@@ -1404,7 +1404,7 @@ static ssize_t iwl_dbgfs_plcp_delta_read(struct file *file,
 					char __user *user_buf,
 					size_t count, loff_t *ppos) {
 
-	struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+	struct iwl_priv *priv = file->private_data;
 	int pos = 0;
 	char buf[12];
 	const size_t bufsz = sizeof(buf);

index 1736746..667695b 100644
@@ -839,7 +839,7 @@ static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
 
 	p = buf;
 
-	d = (struct debug_data *)file->private_data;
+	d = file->private_data;
 
 	for (i = 0; i < num_of_items; i++) {
 		if (d[i].size == 1)

@@ -878,7 +878,7 @@ static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
 	char *p0;
 	char *p1;
 	char *p2;
-	struct debug_data *d = (struct debug_data *)f->private_data;
+	struct debug_data *d = f->private_data;
 
 	pdata = kmalloc(cnt, GFP_KERNEL);
 	if (pdata == NULL)

index dd88803..75688af 100644
@@ -572,7 +572,7 @@ static int dasd_eer_close(struct inode *inp, struct file *filp)
 	struct eerbuffer *eerb;
 	unsigned long flags;
 
-	eerb = (struct eerbuffer *) filp->private_data;
+	eerb = filp->private_data;
 	spin_lock_irqsave(&bufferlock, flags);
 	list_del(&eerb->list);
 	spin_unlock_irqrestore(&bufferlock, flags);

@@ -591,7 +591,7 @@ static ssize_t dasd_eer_read(struct file *filp, char __user *buf,
         unsigned long flags;
 	struct eerbuffer *eerb;
 
-	eerb = (struct eerbuffer *) filp->private_data;
+	eerb = filp->private_data;
 	if (mutex_lock_interruptible(&readbuffer_mutex))
 		return -ERESTARTSYS;
 

@@ -653,7 +653,7 @@ static unsigned int dasd_eer_poll(struct file *filp, poll_table *ptable)
 	unsigned long flags;
 	struct eerbuffer *eerb;
 
-	eerb = (struct eerbuffer *) filp->private_data;
+	eerb = filp->private_data;
 	poll_wait(filp, &dasd_eer_read_wait_queue, ptable);
 	spin_lock_irqsave(&bufferlock, flags);
 	if (eerb->head != eerb->tail)

index b7de025..d448fe5 100644
@@ -296,7 +296,7 @@ tapeblock_revalidate_disk(struct gendisk *disk)
 	unsigned int		nr_of_blks;
 	int			rc;
 
-	device = (struct tape_device *) disk->private_data;
+	device = disk->private_data;
 	BUG_ON(!device);
 
 	if (!device->blk_data.medium_changed)

@@ -345,7 +345,7 @@ tapeblock_medium_changed(struct gendisk *disk)
 {
 	struct tape_device *device;
 
-	device = (struct tape_device *) disk->private_data;
+	device = disk->private_data;
 	DBF_LH(6, "tapeblock_medium_changed(%p) = %d\n",
 		device, device->blk_data.medium_changed);
 

index 539045a..bd037d2 100644
@@ -134,7 +134,7 @@ tapechar_read(struct file *filp, char __user *data, size_t count, loff_t *ppos)
 	int rc;
 
 	DBF_EVENT(6, "TCHAR:read\n");
-	device = (struct tape_device *) filp->private_data;
+	device = filp->private_data;
 
 	/*
 	 * If the tape isn't terminated yet, do it now. And since we then

@@ -199,7 +199,7 @@ tapechar_write(struct file *filp, const char __user *data, size_t count, loff_t
 	int i, rc;
 
 	DBF_EVENT(6, "TCHAR:write\n");
-	device = (struct tape_device *) filp->private_data;
+	device = filp->private_data;
 	/* Find out block size and number of blocks */
 	if (device->char_data.block_size != 0) {
 		if (count < device->char_data.block_size) {

@@ -317,7 +317,7 @@ tapechar_release(struct inode *inode, struct file *filp)
 	struct tape_device *device;
 
 	DBF_EVENT(6, "TCHAR:release: %x\n", iminor(inode));
-	device = (struct tape_device *) filp->private_data;
+	device = filp->private_data;
 
 	/*
 	 * If this is the rewinding tape minor then rewind. In that case we

@@ -454,7 +454,7 @@ tapechar_ioctl(struct file *filp, unsigned int no, unsigned long data)
 
 	DBF_EVENT(6, "TCHAR:ioct\n");
 
-	device = (struct tape_device *) filp->private_data;
+	device = filp->private_data;
 	mutex_lock(&device->mutex);
 	rc = __tapechar_ioctl(device, no, data);
 	mutex_unlock(&device->mutex);

index 04e532e..19a14d9 100644
@@ -47,7 +47,7 @@ static int vmcp_release(struct inode *inode, struct file *file)
 {
 	struct vmcp_session *session;
 
-	session = (struct vmcp_session *)file->private_data;
+	session = file->private_data;
 	file->private_data = NULL;
 	free_pages((unsigned long)session->response, get_order(session->bufsize));
 	kfree(session);

@@ -94,7 +94,7 @@ vmcp_write(struct file *file, const char __user *buff, size_t count,
 		return -EFAULT;
 	}
 	cmd[count] = '\0';
-	session = (struct vmcp_session *)file->private_data;
+	session = file->private_data;
 	if (mutex_lock_interruptible(&session->mutex)) {
 		kfree(cmd);
 		return -ERESTARTSYS;

@@ -136,7 +136,7 @@ static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	int __user *argp;
 	int temp;
 
-	session = (struct vmcp_session *)file->private_data;
+	session = file->private_data;
 	if (is_compat_task())
 		argp = compat_ptr(arg);
 	else

index d53e62a..aacbe14 100644
@@ -554,7 +554,7 @@ static int opiocgetnext(unsigned int cmd, void __user *argp)
 static int openprom_bsd_ioctl(struct file * file,
 			      unsigned int cmd, unsigned long arg)
 {
-	DATA *data = (DATA *) file->private_data;
+	DATA *data = file->private_data;
 	void __user *argp = (void __user *)arg;
 	int err;
 

@@ -601,7 +601,7 @@ static int openprom_bsd_ioctl(struct file * file,
 static long openprom_ioctl(struct file * file,
 			   unsigned int cmd, unsigned long arg)
 {
-	DATA *data = (DATA *) file->private_data;
+	DATA *data = file->private_data;
 
 	switch (cmd) {
 	case OPROMGETOPT:

index 33898b6..d0a7c1d 100644
@@ -770,7 +770,7 @@ static long aac_compat_cfg_ioctl(struct file *file, unsigned cmd, unsigned long
 {
 	if (!capable(CAP_SYS_RAWIO))
 		return -EPERM;
-	return aac_compat_do_ioctl((struct aac_dev *)file->private_data, cmd, arg);
+	return aac_compat_do_ioctl(file->private_data, cmd, arg);
 }
 #endif
 

index 9ebcea3..ecc45c8 100644
@@ -3599,8 +3599,7 @@ static int pmcraid_chr_open(struct inode *inode, struct file *filep)
  */
 static int pmcraid_chr_release(struct inode *inode, struct file *filep)
 {
-	struct pmcraid_instance *pinstance =
-		((struct pmcraid_instance *)filep->private_data);
+	struct pmcraid_instance *pinstance = filep->private_data;
 
 	filep->private_data = NULL;
 	fasync_helper(-1, filep, 0, &pinstance->aen_queue);

@@ -3619,7 +3618,7 @@ static int pmcraid_chr_fasync(int fd, struct file *filep, int mode)
 	struct pmcraid_instance *pinstance;
 	int rc;
 
-	pinstance = (struct pmcraid_instance *)filep->private_data;
+	pinstance = filep->private_data;
 	mutex_lock(&pinstance->aen_queue_lock);
 	rc = fasync_helper(fd, filep, mode, &pinstance->aen_queue);
 	mutex_unlock(&pinstance->aen_queue_lock);

@@ -4110,7 +4109,7 @@ static long pmcraid_chr_ioctl(
 		return retval;
 	}
 
-	pinstance = (struct pmcraid_instance *)filep->private_data;
+	pinstance = filep->private_data;
 
 	if (!pinstance) {
 		pmcraid_info("adapter instance is not found\n");

index ef752b2..c11ab95 100644
@@ -210,7 +210,7 @@ static void sg_put_dev(Sg_device *sdp);
 
 static int sg_allow_access(struct file *filp, unsigned char *cmd)
 {
-	struct sg_fd *sfp = (struct sg_fd *)filp->private_data;
+	struct sg_fd *sfp = filp->private_data;
 
 	if (sfp->parentdp->device->type == TYPE_SCANNER)
 		return 0;

@@ -318,7 +318,7 @@ sg_release(struct inode *inode, struct file *filp)
 	Sg_device *sdp;
 	Sg_fd *sfp;
 
-	if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
+	if ((!(sfp = filp->private_data)) || (!(sdp = sfp->parentdp)))
 		return -ENXIO;
 	SCSI_LOG_TIMEOUT(3, printk("sg_release: %s\n", sdp->disk->disk_name));
 

@@ -342,7 +342,7 @@ sg_read(struct file *filp, char __user *buf, size_t count, loff_t * ppos)
 	struct sg_header *old_hdr = NULL;
 	int retval = 0;
 
-	if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
+	if ((!(sfp = filp->private_data)) || (!(sdp = sfp->parentdp)))
 		return -ENXIO;
 	SCSI_LOG_TIMEOUT(3, printk("sg_read: %s, count=%d\n",
 				   sdp->disk->disk_name, (int) count));

@@ -533,7 +533,7 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
 	sg_io_hdr_t *hp;
 	unsigned char cmnd[MAX_COMMAND_SIZE];
 
-	if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
+	if ((!(sfp = filp->private_data)) || (!(sdp = sfp->parentdp)))
 		return -ENXIO;
 	SCSI_LOG_TIMEOUT(3, printk("sg_write: %s, count=%d\n",
 				   sdp->disk->disk_name, (int) count));

@@ -768,7 +768,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
 	Sg_request *srp;
 	unsigned long iflags;
 
-	if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
+	if ((!(sfp = filp->private_data)) || (!(sdp = sfp->parentdp)))
 		return -ENXIO;
 
 	SCSI_LOG_TIMEOUT(3, printk("sg_ioctl: %s, cmd=0x%x\n",

@@ -1096,7 +1096,7 @@ static long sg_compat_ioctl(struct file *filp, unsigned int cmd_in, unsigned lon
 	Sg_fd *sfp;
 	struct scsi_device *sdev;
 
-	if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
+	if ((!(sfp = filp->private_data)) || (!(sdp = sfp->parentdp)))
 		return -ENXIO;
 
 	sdev = sdp->device;

@@ -1122,7 +1122,7 @@ sg_poll(struct file *filp, poll_table * wait)
 	int count = 0;
 	unsigned long iflags;
 
-	if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp))
+	if ((!(sfp = filp->private_data)) || (!(sdp = sfp->parentdp))
 	    || sfp->closed)
 		return POLLERR;
 	poll_wait(filp, &sfp->read_wait, wait);

@@ -1153,7 +1153,7 @@ sg_fasync(int fd, struct file *filp, int mode)
 	Sg_device *sdp;
 	Sg_fd *sfp;
 
-	if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
+	if ((!(sfp = filp->private_data)) || (!(sdp = sfp->parentdp)))
 		return -ENXIO;
 	SCSI_LOG_TIMEOUT(3, printk("sg_fasync: %s, mode=%d\n",
 				   sdp->disk->disk_name, mode));

@@ -1208,7 +1208,7 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
 	Sg_scatter_hold *rsv_schp;
 	int k, length;
 
-	if ((!filp) || (!vma) || (!(sfp = (Sg_fd *) filp->private_data)))
+	if ((!filp) || (!vma) || (!(sfp = filp->private_data)))
 		return -ENXIO;
 	req_sz = vma->vm_end - vma->vm_start;
 	SCSI_LOG_TIMEOUT(3, printk("sg_mmap starting, vm_start=%p, len=%d\n",

index 8e8eef0..507da68 100644
@@ -104,7 +104,7 @@ static int log_release(struct inode *inode, struct file *file)
 static ssize_t log_read(struct file *file, char __user *buf,
 			size_t count, loff_t *ppos)
 {
-	struct bat_priv *bat_priv = (struct bat_priv *)file->private_data;
+	struct bat_priv *bat_priv = file->private_data;
 	struct debug_log *debug_log = bat_priv->debug_log;
 	int error, i = 0;
 	char c;

@@ -158,7 +158,7 @@ static ssize_t log_read(struct file *file, char __user *buf,
 
 static unsigned int log_poll(struct file *file, poll_table *wait)
 {
-	struct bat_priv *bat_priv = (struct bat_priv *)file->private_data;
+	struct bat_priv *bat_priv = file->private_data;
 	struct debug_log *debug_log = bat_priv->debug_log;
 
 	poll_wait(file, &debug_log->queue_wait, wait);

index 532f246..fc3d32c 100644
@@ -78,8 +78,7 @@ static int bat_socket_open(struct inode *inode, struct file *file)
 
 static int bat_socket_release(struct inode *inode, struct file *file)
 {
-	struct socket_client *socket_client =
-		(struct socket_client *)file->private_data;
+	struct socket_client *socket_client = file->private_data;
 	struct socket_packet *socket_packet;
 	struct list_head *list_pos, *list_pos_tmp;
 	unsigned long flags;

@@ -107,8 +106,7 @@ static int bat_socket_release(struct inode *inode, struct file *file)
 static ssize_t bat_socket_read(struct file *file, char __user *buf,
 			       size_t count, loff_t *ppos)
 {
-	struct socket_client *socket_client =
-		(struct socket_client *)file->private_data;
+	struct socket_client *socket_client = file->private_data;
 	struct socket_packet *socket_packet;
 	size_t packet_len;
 	int error;

@@ -155,8 +153,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
 {
 	/* FIXME: each orig_node->batman_if will be attached to a softif */
 	struct bat_priv *bat_priv = netdev_priv(soft_device);
-	struct socket_client *socket_client =
-		(struct socket_client *)file->private_data;
+	struct socket_client *socket_client = file->private_data;
 	struct icmp_packet_rr icmp_packet;
 	struct orig_node *orig_node;
 	struct batman_if *batman_if;

@@ -247,8 +244,7 @@ out:
 
 static unsigned int bat_socket_poll(struct file *file, poll_table *wait)
 {
-	struct socket_client *socket_client =
-		(struct socket_client *)file->private_data;
+	struct socket_client *socket_client = file->private_data;
 
 	poll_wait(file, &socket_client->queue_wait, wait);
 

index a43b188..bbe3643 100644
@@ -698,7 +698,7 @@ static int cx25821_audio_initdev(struct cx25821_dev *dev)
 
 	/* Card "creation" */
 	card->private_free = snd_cx25821_dev_free;
-	chip = (struct cx25821_audio_dev *) card->private_data;
+	chip = card->private_data;
 	spin_lock_init(&chip->reg_lock);
 
 	chip->dev = dev;

index f71cd9e..a36a8e8 100644
@@ -791,7 +791,7 @@ static struct easycap *peasycap;
 static struct usb_device *p;
 static __u32 isequence;
 
-peasycap = (struct easycap *)file->private_data;
+peasycap = file->private_data;
 if (NULL == peasycap) {
 	SAY("ERROR:  peasycap is NULL\n");
 	return -1;

@@ -1972,7 +1972,7 @@ int easysnd_ioctl(struct inode *inode, struct file *file, \
 struct easycap *peasycap;
 struct usb_device *p;
 
-peasycap = (struct easycap *)file->private_data;
+peasycap = file->private_data;
 if (NULL == peasycap) {
 	SAY("ERROR:  peasycap is NULL.\n");
 	return -1;

index 18259df..8724b4a 100644
@@ -531,7 +531,7 @@ struct easycap *peasycap;
 
 JOT(4, "\n");
 
-peasycap = (struct easycap *)file->private_data;
+peasycap = file->private_data;
 if (NULL == peasycap) {
 	SAY("ERROR:  peasycap is NULL.\n");
 	SAY("ending unsuccessfully\n");

@@ -823,7 +823,7 @@ if (NULL == ((struct file *)file)) {
 	SAY("ERROR:  file pointer is NULL\n");
 	return -EFAULT;
 }
-peasycap = (struct easycap *)file->private_data;
+peasycap = file->private_data;
 if (NULL == peasycap) {
 	SAY("ERROR:  peasycap is NULL\n");
 	return -EFAULT;

index 532c410..b0fc517 100644
@@ -563,7 +563,7 @@ struct easycap *peasycap;
 
 JOT(4, "begins\n");
 
-peasycap = (struct easycap *)file->private_data;
+peasycap = file->private_data;
 if (NULL == peasycap) {
 	SAY("ERROR:  peasycap is NULL.\n");
 	return -EFAULT;

index 1e00ff9..53e1202 100644
@@ -142,7 +142,7 @@ static struct usb_descriptor_header *hidg_fs_descriptors[] = {
 static ssize_t f_hidg_read(struct file *file, char __user *buffer,
 			size_t count, loff_t *ptr)
 {
-	struct f_hidg	*hidg     = (struct f_hidg *)file->private_data;
+	struct f_hidg	*hidg     = file->private_data;
 	char		*tmp_buff = NULL;
 	unsigned long	flags;
 

@@ -200,7 +200,7 @@ static void f_hidg_req_complete(struct usb_ep *ep, struct usb_request *req)
 static ssize_t f_hidg_write(struct file *file, const char __user *buffer,
 			    size_t count, loff_t *offp)
 {
-	struct f_hidg *hidg  = (struct f_hidg *)file->private_data;
+	struct f_hidg *hidg  = file->private_data;
 	ssize_t status = -ENOMEM;
 
 	if (!access_ok(VERIFY_READ, buffer, count))

@@ -257,7 +257,7 @@ static ssize_t f_hidg_write(struct file *file, const char __user *buffer,
 
 static unsigned int f_hidg_poll(struct file *file, poll_table *wait)
 {
-	struct f_hidg	*hidg  = (struct f_hidg *)file->private_data;
+	struct f_hidg	*hidg  = file->private_data;
 	unsigned int	ret = 0;
 
 	poll_wait(file, &hidg->read_queue, wait);

index 82e1663..aecf380 100644
@@ -650,7 +650,7 @@ static int ftdi_elan_open(struct inode *inode, struct file *file)
 
 static int ftdi_elan_release(struct inode *inode, struct file *file)
 {
-        struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data;
+        struct usb_ftdi *ftdi = file->private_data;
         if (ftdi == NULL)
                 return -ENODEV;
         up(&ftdi->sw_lock);        /* decrement the count on our device */

@@ -673,7 +673,7 @@ static ssize_t ftdi_elan_read(struct file *file, char __user *buffer,
         int bytes_read = 0;
         int retry_on_empty = 10;
         int retry_on_timeout = 5;
-        struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data;
+        struct usb_ftdi *ftdi = file->private_data;
         if (ftdi->disconnected > 0) {
                 return -ENODEV;
         }

index 7dc9d3c..e81ac00 100644
@@ -282,7 +282,7 @@ static ssize_t iowarrior_read(struct file *file, char __user *buffer,
 	int read_idx;
 	int offset;
 
-	dev = (struct iowarrior *)file->private_data;
+	dev = file->private_data;
 
 	/* verify that the device wasn't unplugged */
 	if (dev == NULL || !dev->present)

@@ -348,7 +348,7 @@ static ssize_t iowarrior_write(struct file *file,
 	char *buf = NULL;	/* for IOW24 and IOW56 we need a buffer */
 	struct urb *int_out_urb = NULL;
 
-	dev = (struct iowarrior *)file->private_data;
+	dev = file->private_data;
 
 	mutex_lock(&dev->mutex);
 	/* verify that the device wasn't unplugged */

@@ -483,7 +483,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd,
 	int retval;
 	int io_res;		/* checks for bytes read/written and copy_to/from_user results */
 
-	dev = (struct iowarrior *)file->private_data;
+	dev = file->private_data;
 	if (dev == NULL) {
 		return -ENODEV;
 	}

@@ -656,7 +656,7 @@ static int iowarrior_release(struct inode *inode, struct file *file)
 	struct iowarrior *dev;
 	int retval = 0;
 
-	dev = (struct iowarrior *)file->private_data;
+	dev = file->private_data;
 	if (dev == NULL) {
 		return -ENODEV;
 	}

index 8547bf9..6482c6e 100644
@@ -448,7 +448,7 @@ static int tower_release (struct inode *inode, struct file *file)
 
 	dbg(2, "%s: enter", __func__);
 
-	dev = (struct lego_usb_tower *)file->private_data;
+	dev = file->private_data;
 
 	if (dev == NULL) {
 		dbg(1, "%s: object is NULL", __func__);

@@ -597,7 +597,7 @@ static ssize_t tower_read (struct file *file, char __user *buffer, size_t count,
 
 	dbg(2, "%s: enter, count = %Zd", __func__, count);
 
-	dev = (struct lego_usb_tower *)file->private_data;
+	dev = file->private_data;
 
 	/* lock this object */
 	if (mutex_lock_interruptible(&dev->lock)) {

@@ -686,7 +686,7 @@ static ssize_t tower_write (struct file *file, const char __user *buffer, size_t
 
 	dbg(2, "%s: enter, count = %Zd", __func__, count);
 
-	dev = (struct lego_usb_tower *)file->private_data;
+	dev = file->private_data;
 
 	/* lock this object */
 	if (mutex_lock_interruptible(&dev->lock)) {

index 30d9303..045120e 100644
@@ -2486,7 +2486,7 @@ sisusb_release(struct inode *inode, struct file *file)
 {
 	struct sisusb_usb_data *sisusb;
 
-	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+	if (!(sisusb = file->private_data))
 		return -ENODEV;
 
 	mutex_lock(&sisusb->lock);

@@ -2518,7 +2518,7 @@ sisusb_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
 	u16 buf16;
 	u32 buf32, address;
 
-	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+	if (!(sisusb = file->private_data))
 		return -ENODEV;
 
 	mutex_lock(&sisusb->lock);

@@ -2660,7 +2660,7 @@ sisusb_write(struct file *file, const char __user *buffer, size_t count,
 	u16 buf16;
 	u32 buf32, address;
 
-	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+	if (!(sisusb = file->private_data))
 		return -ENODEV;
 
 	mutex_lock(&sisusb->lock);

@@ -2803,7 +2803,7 @@ sisusb_lseek(struct file *file, loff_t offset, int orig)
 	struct sisusb_usb_data *sisusb;
 	loff_t ret;
 
-	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+	if (!(sisusb = file->private_data))
 		return -ENODEV;
 
 	mutex_lock(&sisusb->lock);

@@ -2968,7 +2968,7 @@ sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	long retval = 0;
 	u32 __user *argp = (u32 __user *)arg;
 
-	if (!(sisusb = (struct sisusb_usb_data *)file->private_data))
+	if (!(sisusb = file->private_data))
 		return -ENODEV;
 
 	mutex_lock(&sisusb->lock);

index 7828c76..a0dad56 100644
@@ -116,7 +116,7 @@ static int lcd_release(struct inode *inode, struct file *file)
 {
 	struct usb_lcd *dev;
 
-	dev = (struct usb_lcd *)file->private_data;
+	dev = file->private_data;
 	if (dev == NULL)
 		return -ENODEV;
 

@@ -132,7 +132,7 @@ static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, l
 	int retval = 0;
 	int bytes_read;
 
-	dev = (struct usb_lcd *)file->private_data;
+	dev = file->private_data;
 
 	/* do a blocking bulk read to get data from the device */
 	retval = usb_bulk_msg(dev->udev, 

@@ -158,7 +158,7 @@ static long lcd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	u16 bcdDevice;
 	char buf[30];
 
-	dev = (struct usb_lcd *)file->private_data;
+	dev = file->private_data;
 	if (dev == NULL)
 		return -ENODEV;
 	

@@ -217,7 +217,7 @@ static ssize_t lcd_write(struct file *file, const char __user * user_buffer, siz
 	struct urb *urb = NULL;
 	char *buf = NULL;
 	
-	dev = (struct usb_lcd *)file->private_data;
+	dev = file->private_data;
 	
 	/* verify that we actually have some data to write */
 	if (count == 0)

index d110588..552679b 100644
@@ -142,7 +142,7 @@ static int skel_release(struct inode *inode, struct file *file)
 {
 	struct usb_skel *dev;
 
-	dev = (struct usb_skel *)file->private_data;
+	dev = file->private_data;
 	if (dev == NULL)
 		return -ENODEV;
 

@@ -162,7 +162,7 @@ static int skel_flush(struct file *file, fl_owner_t id)
 	struct usb_skel *dev;
 	int res;
 
-	dev = (struct usb_skel *)file->private_data;
+	dev = file->private_data;
 	if (dev == NULL)
 		return -ENODEV;
 

@@ -246,7 +246,7 @@ static ssize_t skel_read(struct file *file, char *buffer, size_t count,
 	int rv;
 	bool ongoing_io;
 
-	dev = (struct usb_skel *)file->private_data;
+	dev = file->private_data;
 
 	/* if we cannot read at all, return EOF */
 	if (!dev->bulk_in_urb || !count)

@@ -401,7 +401,7 @@ static ssize_t skel_write(struct file *file, const char *user_buffer,
 	char *buf = NULL;
 	size_t writesize = min(count, (size_t)MAX_TRANSFER);
 
-	dev = (struct usb_skel *)file->private_data;
+	dev = file->private_data;
 
 	/* verify that we actually have some data to write */
 	if (count == 0)

index 409e4f5..b5fb2a0 100644
@@ -427,7 +427,7 @@ static int cifs_reopen_file(struct file *file, bool can_flush)
 	__u16 netfid;
 
 	if (file->private_data)
-		pCifsFile = (struct cifsFileInfo *)file->private_data;
+		pCifsFile = file->private_data;
 	else
 		return -EBADF;
 

@@ -565,8 +565,7 @@ int cifs_close(struct inode *inode, struct file *file)
 	int xid, timeout;
 	struct cifs_sb_info *cifs_sb;
 	struct cifsTconInfo *pTcon;
-	struct cifsFileInfo *pSMBFile =
-		(struct cifsFileInfo *)file->private_data;
+	struct cifsFileInfo *pSMBFile = file->private_data;
 
 	xid = GetXid();
 

@@ -641,8 +640,7 @@ int cifs_closedir(struct inode *inode, struct file *file)
 {
 	int rc = 0;
 	int xid;
-	struct cifsFileInfo *pCFileStruct =
-	    (struct cifsFileInfo *)file->private_data;
+	struct cifsFileInfo *pCFileStruct = file->private_data;
 	char *ptmp;
 
 	cFYI(1, "Closedir inode = 0x%p", inode);

@@ -863,8 +861,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *pfLock)
 				      length, pfLock,
 				      posix_lock_type, wait_flag);
 	} else {
-		struct cifsFileInfo *fid =
-			(struct cifsFileInfo *)file->private_data;
+		struct cifsFileInfo *fid = file->private_data;
 
 		if (numLock) {
 			rc = CIFSSMBLock(xid, tcon, netfid, length,

@@ -965,7 +962,7 @@ ssize_t cifs_user_write(struct file *file, const char __user *write_data,
 
 	if (file->private_data == NULL)
 		return -EBADF;
-	open_file = (struct cifsFileInfo *) file->private_data;
+	open_file = file->private_data;
 
 	rc = generic_write_checks(file, poffset, &write_size, 0);
 	if (rc)

@@ -1067,7 +1064,7 @@ static ssize_t cifs_write(struct file *file, const char *write_data,
 
 	if (file->private_data == NULL)
 		return -EBADF;
-	open_file = (struct cifsFileInfo *)file->private_data;
+	open_file = file->private_data;
 
 	xid = GetXid();
 

@@ -1651,8 +1648,7 @@ int cifs_fsync(struct file *file, int datasync)
 	int xid;
 	int rc = 0;
 	struct cifsTconInfo *tcon;
-	struct cifsFileInfo *smbfile =
-		(struct cifsFileInfo *)file->private_data;
+	struct cifsFileInfo *smbfile = file->private_data;
 	struct inode *inode = file->f_path.dentry->d_inode;
 
 	xid = GetXid();

@@ -1756,7 +1752,7 @@ ssize_t cifs_user_read(struct file *file, char __user *read_data,
 		FreeXid(xid);
 		return rc;
 	}
-	open_file = (struct cifsFileInfo *)file->private_data;
+	open_file = file->private_data;
 
 	if ((file->f_flags & O_ACCMODE) == O_WRONLY)
 		cFYI(1, "attempting read on write only file instance");

@@ -1837,7 +1833,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
 		FreeXid(xid);
 		return rc;
 	}
-	open_file = (struct cifsFileInfo *)file->private_data;
+	open_file = file->private_data;
 
 	if ((file->f_flags & O_ACCMODE) == O_WRONLY)
 		cFYI(1, "attempting read on write only file instance");

@@ -1968,7 +1964,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
 		FreeXid(xid);
 		return rc;
 	}
-	open_file = (struct cifsFileInfo *)file->private_data;
+	open_file = file->private_data;
 	cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
 	pTcon = cifs_sb->tcon;
 

index 107c84d..ee08248 100644
@@ -288,7 +288,7 @@ int cifs_get_file_info_unix(struct file *filp)
 	struct inode *inode = filp->f_path.dentry->d_inode;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct cifsTconInfo *tcon = cifs_sb->tcon;
-	struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
+	struct cifsFileInfo *cfile = filp->private_data;
 
 	xid = GetXid();
 	rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data);

@@ -515,7 +515,7 @@ int cifs_get_file_info(struct file *filp)
 	struct inode *inode = filp->f_path.dentry->d_inode;
 	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 	struct cifsTconInfo *tcon = cifs_sb->tcon;
-	struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
+	struct cifsFileInfo *cfile = filp->private_data;
 
 	xid = GetXid();
 	rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data);

index 505926f..9d38a71 100644
@@ -41,8 +41,7 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
 	__u64	ExtAttrMask = 0;
 	__u64   caps;
 	struct cifsTconInfo *tcon;
-	struct cifsFileInfo *pSMBFile =
-		(struct cifsFileInfo *)filep->private_data;
+	struct cifsFileInfo *pSMBFile = filep->private_data;
 #endif /* CONFIG_CIFS_POSIX */
 
 	xid = GetXid();

index 66b9cf7..2c4fd44 100644
@@ -63,7 +63,7 @@ static struct class *coda_psdev_class;
 
 static unsigned int coda_psdev_poll(struct file *file, poll_table * wait)
 {
-        struct venus_comm *vcp = (struct venus_comm *) file->private_data;
+        struct venus_comm *vcp = file->private_data;
 	unsigned int mask = POLLOUT | POLLWRNORM;
 
 	poll_wait(file, &vcp->vc_waitq, wait);

@@ -95,7 +95,7 @@ static long coda_psdev_ioctl(struct file * filp, unsigned int cmd, unsigned long
 static ssize_t coda_psdev_write(struct file *file, const char __user *buf, 
 				size_t nbytes, loff_t *off)
 {
-        struct venus_comm *vcp = (struct venus_comm *) file->private_data;
+        struct venus_comm *vcp = file->private_data;
         struct upc_req *req = NULL;
         struct upc_req *tmp;
 	struct list_head *lh;

@@ -209,7 +209,7 @@ static ssize_t coda_psdev_read(struct file * file, char __user * buf,
 			       size_t nbytes, loff_t *off)
 {
 	DECLARE_WAITQUEUE(wait, current);
-        struct venus_comm *vcp = (struct venus_comm *) file->private_data;
+        struct venus_comm *vcp = file->private_data;
         struct upc_req *req;
 	ssize_t retval = 0, count = 0;
 

@@ -300,7 +300,7 @@ static int coda_psdev_open(struct inode * inode, struct file * file)
 
 static int coda_psdev_release(struct inode * inode, struct file * file)
 {
-	struct venus_comm *vcp = (struct venus_comm *) file->private_data;
+	struct venus_comm *vcp = file->private_data;
 	struct upc_req *req, *tmp;
 
 	if (!vcp || !vcp->vc_inuse ) {

index 0032a9f..40186b9 100644
@@ -477,7 +477,7 @@ ecryptfs_lower_header_size(struct ecryptfs_crypt_stat *crypt_stat)
 static inline struct ecryptfs_file_info *
 ecryptfs_file_to_private(struct file *file)
 {
-	return (struct ecryptfs_file_info *)file->private_data;
+	return file->private_data;
 }
 
 static inline void

index e2e72c3..d056787 100644
@@ -337,7 +337,7 @@ int ext3_htree_store_dirent(struct file *dir_file, __u32 hash,
 	struct dir_private_info *info;
 	int len;
 
-	info = (struct dir_private_info *) dir_file->private_data;
+	info = dir_file->private_data;
 	p = &info->root.rb_node;
 
 	/* Create and allocate the fname structure */

index ea5e6cb..737bf12 100644
@@ -343,7 +343,7 @@ int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
 	struct dir_private_info *info;
 	int len;
 
-	info = (struct dir_private_info *) dir_file->private_data;
+	info = dir_file->private_data;
 	p = &info->root.rb_node;
 
 	/* Create and allocate the fname structure */

index 12b3bc0..204588d 100644
@@ -2221,7 +2221,7 @@ static int ext4_mb_seq_groups_open(struct inode *inode, struct file *file)
 
 	rc = seq_open(file, &ext4_mb_seq_groups_ops);
 	if (rc == 0) {
-		struct seq_file *m = (struct seq_file *)file->private_data;
+		struct seq_file *m = file->private_data;
 		m->private = sb;
 	}
 	return rc;

index 0cd24cf..5efdd37 100644
@@ -419,7 +419,7 @@ static loff_t debug_buffer_llseek(struct file *file, loff_t off, int whence)
 
 static int debug_buffer_release(struct inode *inode, struct file *file)
 {
-	struct debug_buffer *db = (struct debug_buffer *)file->private_data;
+	struct debug_buffer *db = file->private_data;
 
 	if (db)
 		kfree(db->buf);

@@ -715,7 +715,7 @@ static int debug_lockres_open(struct inode *inode, struct file *file)
 		goto bail;
 	}
 
-	seq = (struct seq_file *) file->private_data;
+	seq = file->private_data;
 	seq->private = dl;
 
 	dlm_grab(dlm);

@@ -731,7 +731,7 @@ bail:
 
 static int debug_lockres_release(struct inode *inode, struct file *file)
 {
-	struct seq_file *seq = (struct seq_file *)file->private_data;
+	struct seq_file *seq = file->private_data;
 	struct debug_lockres *dl = (struct debug_lockres *)seq->private;
 
 	if (dl->dl_res)

index a43ebb1..c2903b8 100644
@@ -182,8 +182,7 @@ static int dlmfs_file_release(struct inode *inode,
 {
 	int level, status;
 	struct dlmfs_inode_private *ip = DLMFS_I(inode);
-	struct dlmfs_filp_private *fp =
-		(struct dlmfs_filp_private *) file->private_data;
+	struct dlmfs_filp_private *fp = file->private_data;
 
 	if (S_ISDIR(inode->i_mode))
 		BUG();

index 39eb16a..5e02a89 100644
@@ -2966,7 +2966,7 @@ static const struct seq_operations ocfs2_dlm_seq_ops = {
 
 static int ocfs2_dlm_debug_release(struct inode *inode, struct file *file)
 {
-	struct seq_file *seq = (struct seq_file *) file->private_data;
+	struct seq_file *seq = file->private_data;
 	struct ocfs2_dlm_seq_priv *priv = seq->private;
 	struct ocfs2_lock_res *res = &priv->p_iter_res;
 

@@ -3000,7 +3000,7 @@ static int ocfs2_dlm_debug_open(struct inode *inode, struct file *file)
 		goto out;
 	}
 
-	seq = (struct seq_file *) file->private_data;
+	seq = file->private_data;
 	seq->private = priv;
 
 	ocfs2_add_lockres_tracking(&priv->p_iter_res,

index e1f437b..0e7cb13 100644
@@ -131,7 +131,7 @@ Eoverflow:
  */
 ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
 {
-	struct seq_file *m = (struct seq_file *)file->private_data;
+	struct seq_file *m = file->private_data;
 	size_t copied = 0;
 	loff_t pos;
 	size_t n;

@@ -280,7 +280,7 @@ EXPORT_SYMBOL(seq_read);
  */
 loff_t seq_lseek(struct file *file, loff_t offset, int origin)
 {
-	struct seq_file *m = (struct seq_file *)file->private_data;
+	struct seq_file *m = file->private_data;
 	loff_t retval = -EINVAL;
 
 	mutex_lock(&m->lock);

@@ -324,7 +324,7 @@ EXPORT_SYMBOL(seq_lseek);
  */
 int seq_release(struct inode *inode, struct file *file)
 {
-	struct seq_file *m = (struct seq_file *)file->private_data;
+	struct seq_file *m = file->private_data;
 	kfree(m->buf);
 	kfree(m);
 	return 0;

index 0d88ce9..0691e87 100644
@@ -1592,7 +1592,7 @@ ftrace_failures_open(struct inode *inode, struct file *file)
 
 	ret = ftrace_avail_open(inode, file);
 	if (!ret) {
-		m = (struct seq_file *)file->private_data;
+		m = file->private_data;
 		iter = (struct ftrace_iterator *)m->private;
 		iter->flags = FTRACE_ITER_FAILURES;
 	}

@@ -2349,7 +2349,7 @@ static void __init set_ftrace_early_filters(void)
 static int
 ftrace_regex_release(struct inode *inode, struct file *file, int enable)
 {
-	struct seq_file *m = (struct seq_file *)file->private_data;
+	struct seq_file *m = file->private_data;
 	struct ftrace_iterator *iter;
 	struct trace_parser *parser;
 

index 8683dec..10b82a1 100644
@@ -2257,7 +2257,7 @@ int tracing_open_generic(struct inode *inode, struct file *filp)
 
 static int tracing_release(struct inode *inode, struct file *file)
 {
-	struct seq_file *m = (struct seq_file *)file->private_data;
+	struct seq_file *m = file->private_data;
 	struct trace_iterator *iter;
 	int cpu;
 

index 14b757f..c8aa61c 100644
@@ -394,7 +394,7 @@ static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
 	} else
 		return -EINVAL;
 
-	pm_qos_req = (struct pm_qos_request_list *)filp->private_data;
+	pm_qos_req = filp->private_data;
 	pm_qos_update_request(pm_qos_req, value);
 
 	return count;

index 1ee2ebd..24a19de 100644
@@ -846,7 +846,7 @@ static ssize_t pktgen_if_write(struct file *file,
 			       const char __user * user_buffer, size_t count,
 			       loff_t * offset)
 {
-	struct seq_file *seq = (struct seq_file *)file->private_data;
+	struct seq_file *seq = file->private_data;
 	struct pktgen_dev *pkt_dev = seq->private;
 	int i = 0, max, len;
 	char name[16], valstr[32];

@@ -1776,7 +1776,7 @@ static ssize_t pktgen_thread_write(struct file *file,
 				   const char __user * user_buffer,
 				   size_t count, loff_t * offset)
 {
-	struct seq_file *seq = (struct seq_file *)file->private_data;
+	struct seq_file *seq = file->private_data;
 	struct pktgen_thread *t = seq->private;
 	int i = 0, max, len, ret;
 	char name[40];

index 6a1a202..800bc53 100644
@@ -527,7 +527,7 @@ static int
 dev_irnet_close(struct inode *	inode,
 		struct file *	file)
 {
-  irnet_socket *	ap = (struct irnet_socket *) file->private_data;
+  irnet_socket *	ap = file->private_data;
 
   DENTER(FS_TRACE, "(file=0x%p, ap=0x%p)\n",
 	 file, ap);

@@ -564,7 +564,7 @@ dev_irnet_write(struct file *	file,
 		size_t		count,
 		loff_t *	ppos)
 {
-  irnet_socket *	ap = (struct irnet_socket *) file->private_data;
+  irnet_socket *	ap = file->private_data;
 
   DPASS(FS_TRACE, "(file=0x%p, ap=0x%p, count=%Zd)\n",
 	file, ap, count);

@@ -588,7 +588,7 @@ dev_irnet_read(struct file *	file,
 	       size_t		count,
 	       loff_t *		ppos)
 {
-  irnet_socket *	ap = (struct irnet_socket *) file->private_data;
+  irnet_socket *	ap = file->private_data;
 
   DPASS(FS_TRACE, "(file=0x%p, ap=0x%p, count=%Zd)\n",
 	file, ap, count);

@@ -609,7 +609,7 @@ static unsigned int
 dev_irnet_poll(struct file *	file,
 	       poll_table *	wait)
 {
-  irnet_socket *	ap = (struct irnet_socket *) file->private_data;
+  irnet_socket *	ap = file->private_data;
   unsigned int		mask;
 
   DENTER(FS_TRACE, "(file=0x%p, ap=0x%p)\n",

@@ -638,7 +638,7 @@ dev_irnet_ioctl(
 		unsigned int	cmd,
 		unsigned long	arg)
 {
-  irnet_socket *	ap = (struct irnet_socket *) file->private_data;
+  irnet_socket *	ap = file->private_data;
   int			err;
   int			val;
   void __user *argp = (void __user *)arg;

index 95ccbcf..1f7fc50 100644
@@ -204,7 +204,7 @@ rpc_pipe_release(struct inode *inode, struct file *filp)
 	mutex_lock(&inode->i_mutex);
 	if (rpci->ops == NULL)
 		goto out;
-	msg = (struct rpc_pipe_msg *)filp->private_data;
+	msg = filp->private_data;
 	if (msg != NULL) {
 		spin_lock(&inode->i_lock);
 		msg->errno = -EAGAIN;

@@ -322,7 +322,7 @@ rpc_pipe_ioctl_unlocked(struct file *filp, unsigned int cmd, unsigned long arg)
 		len = rpci->pipelen;
 		if (filp->private_data) {
 			struct rpc_pipe_msg *msg;
-			msg = (struct rpc_pipe_msg *)filp->private_data;
+			msg = filp->private_data;
 			len += msg->len - msg->copied;
 		}
 		return put_user(len, (int __user *)arg);

index 523b7fc..c0eba51 100644
@@ -255,8 +255,7 @@ EXPORT_SYMBOL_GPL(soc_ac97_ops);
 #ifdef CONFIG_PM
 static int bf5xx_ac97_suspend(struct snd_soc_dai *dai)
 {
-	struct sport_device *sport =
-		(struct sport_device *)dai->private_data;
+	struct sport_device *sport = dai->private_data;
 
 	pr_debug("%s : sport %d\n", __func__, dai->id);
 	if (!dai->active)

@@ -271,8 +270,7 @@ static int bf5xx_ac97_suspend(struct snd_soc_dai *dai)
 static int bf5xx_ac97_resume(struct snd_soc_dai *dai)
 {
 	int ret;
-	struct sport_device *sport =
-		(struct sport_device *)dai->private_data;
+	struct sport_device *sport = dai->private_data;
 
 	pr_debug("%s : sport %d\n", __func__, dai->id);
 	if (!dai->active)

index 4b36012..24c1426 100644
@@ -210,8 +210,7 @@ static int bf5xx_tdm_set_channel_map(struct snd_soc_dai *dai,
 #ifdef CONFIG_PM
 static int bf5xx_tdm_suspend(struct snd_soc_dai *dai)
 {
-	struct sport_device *sport =
-		(struct sport_device *)dai->private_data;
+	struct sport_device *sport = dai->private_data;
 
 	if (!dai->active)
 		return 0;

@@ -225,8 +224,7 @@ static int bf5xx_tdm_suspend(struct snd_soc_dai *dai)
 static int bf5xx_tdm_resume(struct snd_soc_dai *dai)
 {
 	int ret;
-	struct sport_device *sport =
-		(struct sport_device *)dai->private_data;
+	struct sport_device *sport = dai->private_data;
 
 	if (!dai->active)
 		return 0;

index 2dc406f..def454e 100644
@@ -800,7 +800,7 @@ static void davinci_pcm_free(struct snd_pcm *pcm)
 		dma_free_writecombine(pcm->card->dev, buf->bytes,
 				      buf->area, buf->addr);
 		buf->area = NULL;
-		iram_dma = (struct snd_dma_buffer *)buf->private_data;
+		iram_dma = buf->private_data;
 		if (iram_dma) {
 			sram_free(iram_dma->area, iram_dma->bytes);
 			kfree(iram_dma);

index f50ebf2..86afb13 100644
@@ -77,7 +77,7 @@ static int snd_mixer_oss_release(struct inode *inode, struct file *file)
 	struct snd_mixer_oss_file *fmixer;
 
 	if (file->private_data) {
-		fmixer = (struct snd_mixer_oss_file *) file->private_data;
+		fmixer = file->private_data;
 		module_put(fmixer->card->module);
 		snd_card_file_remove(fmixer->card, file);
 		kfree(fmixer);

@@ -368,7 +368,7 @@ static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int
 
 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-	return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
+	return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
 }
 
 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)

@@ -582,7 +582,7 @@ static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
 				     struct snd_mixer_oss_slot *pslot,
 				     int *left, int *right)
 {
-	struct slot *slot = (struct slot *)pslot->private_data;
+	struct slot *slot = pslot->private_data;
 	
 	*left = *right = 100;
 	if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {

@@ -691,7 +691,7 @@ static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
 				     struct snd_mixer_oss_slot *pslot,
 				     int left, int right)
 {
-	struct slot *slot = (struct slot *)pslot->private_data;
+	struct slot *slot = pslot->private_data;
 	
 	if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
 		snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);

@@ -740,7 +740,7 @@ static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 					struct snd_mixer_oss_slot *pslot,
 					int *active)
 {
-	struct slot *slot = (struct slot *)pslot->private_data;
+	struct slot *slot = pslot->private_data;
 	int left, right;
 	
 	left = right = 1;

@@ -753,7 +753,7 @@ static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 					   struct snd_mixer_oss_slot *pslot,
 					   int *active)
 {
-	struct slot *slot = (struct slot *)pslot->private_data;
+	struct slot *slot = pslot->private_data;
 	int left, right;
 	
 	left = right = 1;

@@ -766,7 +766,7 @@ static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
 					struct snd_mixer_oss_slot *pslot,
 					int active)
 {
-	struct slot *slot = (struct slot *)pslot->private_data;
+	struct slot *slot = pslot->private_data;
 	
 	snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
 	return 0;

@@ -776,7 +776,7 @@ static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
 					   struct snd_mixer_oss_slot *pslot,
 					   int active)
 {
-	struct slot *slot = (struct slot *)pslot->private_data;
+	struct slot *slot = pslot->private_data;
 	
 	snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
 	return 0;

@@ -813,7 +813,7 @@ static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
 		if (!(mixer->mask_recsrc & (1 << idx)))
 			continue;
 		pslot = &mixer->slots[idx];
-		slot = (struct slot *)pslot->private_data;
+		slot = pslot->private_data;
 		if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 			continue;
 		if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))

@@ -861,7 +861,7 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
 		if (!(mixer->mask_recsrc & (1 << idx)))
 			continue;
 		pslot = &mixer->slots[idx];
-		slot = (struct slot *)pslot->private_data;
+		slot = pslot->private_data;
 		if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
 			continue;
 		if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))

@@ -925,7 +925,7 @@ static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *sl
 
 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
 {
-	struct slot *p = (struct slot *)chn->private_data;
+	struct slot *p = chn->private_data;
 	if (p) {
 		if (p->allocated && p->assigned) {
 			kfree(p->assigned->name);

index cbe815d..de5a0eb 100644
@@ -358,8 +358,7 @@ static void snd_pcm_stream_proc_info_read(struct snd_info_entry *entry,
 static void snd_pcm_substream_proc_info_read(struct snd_info_entry *entry,
 					     struct snd_info_buffer *buffer)
 {
-	snd_pcm_proc_info_read((struct snd_pcm_substream *)entry->private_data,
-			       buffer);
+	snd_pcm_proc_info_read(entry->private_data, buffer);
 }
 
 static void snd_pcm_substream_proc_hw_params_read(struct snd_info_entry *entry,

index 13afb60..5ab1014 100644
@@ -962,7 +962,7 @@ static int snd_timer_s_start(struct snd_timer * timer)
 	struct snd_timer_system_private *priv;
 	unsigned long njiff;
 
-	priv = (struct snd_timer_system_private *) timer->private_data;
+	priv = timer->private_data;
 	njiff = (priv->last_jiffies = jiffies);
 	if (priv->correction > timer->sticks - 1) {
 		priv->correction -= timer->sticks - 1;

@@ -981,7 +981,7 @@ static int snd_timer_s_stop(struct snd_timer * timer)
 	struct snd_timer_system_private *priv;
 	unsigned long jiff;
 
-	priv = (struct snd_timer_system_private *) timer->private_data;
+	priv = timer->private_data;
 	del_timer(&priv->tlist);
 	jiff = jiffies;
 	if (time_before(jiff, priv->last_expires))