clean up mach_reboot_fixups

The reboot_fixups stuff seems to be a bit of a mess, specifically the header is in linux/ when its a purely i386-specific piece of code. I'm not sure why it has its config option; its only currently needed for "geode-gx1/cs5530a", so perhaps whatever config option controls that hardware should enable this?

---
 arch/i386/kernel/reboot.c        |    6 +++++-
 arch/i386/kernel/reboot_fixups.c |    2 +-
 include/asm-i386/reboot_fixups.h |    6 ++++++
 include/linux/reboot_fixups.h    |   10 ----------
 4 files changed, 12 insertions(+), 12 deletions(-)

===================================================================

@@ -17,7 +17,7 @@
 #include <asm/apic.h>
 #include <asm/desc.h>
 #include "mach_reboot.h"
-#include <linux/reboot_fixups.h>
+#include <asm/reboot_fixups.h>
 
 /*
  * Power off function, if any

@@ -314,6 +314,10 @@ void machine_shutdown(void)
 #ifdef CONFIG_X86_IO_APIC
 	disable_IO_APIC();
 #endif
+}
+
+void __attribute__((weak)) mach_reboot_fixups(void)
+{
 }
 
 void machine_emergency_restart(void)

===================================================================

@@ -10,7 +10,7 @@
 
 #include <asm/delay.h>
 #include <linux/pci.h>
-#include <linux/reboot_fixups.h>
+#include <asm/reboot_fixups.h>
 
 static void cs5530a_warm_reset(struct pci_dev *dev)
 {

===================================================================

@@ -0,0 +1,6 @@
+#ifndef _LINUX_REBOOT_FIXUPS_H
+#define _LINUX_REBOOT_FIXUPS_H
+
+extern void mach_reboot_fixups(void);
+
+#endif /* _LINUX_REBOOT_FIXUPS_H */

===================================================================

@@ -1,10 +0,0 @@
-#ifndef _LINUX_REBOOT_FIXUPS_H
-#define _LINUX_REBOOT_FIXUPS_H
-
-#ifdef CONFIG_X86_REBOOTFIXUPS
-extern void mach_reboot_fixups(void);
-#else
-#define mach_reboot_fixups() ((void)(0))
-#endif
-
-#endif /* _LINUX_REBOOT_FIXUPS_H */

Thanks. Looks good.

-Andi

It looks like a cs5530a is a PATA driver in drivers/ata/pata_cs5530.c. Seems to me the cleanest fix is to register a reboot notifier in the driver and have it do the magic rather than have the special mach_reboot_fixups mechanism at all.

Assuming it needs to be done at all...

Alan? Jaya?

J

I'm guessing rather it is an embedded setup, then a weird pata thing.

If we want to remove crud from this path we should provide a hook like pm_power_off to handle the reboot case.

This is not the kind of thing that a reboot notifier can be used for. as:
a) reboot notifiers don't get called on all paths to machine_emergency_restart.
b) touching those bits looks like they immediately flip the reset line, so trigger the reboot immediately.

Eric