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authorEric W. Biederman <ebiederm@xmission.com>2005-09-22 21:43:46 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-22 22:17:33 -0700
commit88d10bbaaec38856f913313b6c0858d9e9b7a066 (patch)
tree0d38947da1e0d72d00ae35e64b25f7d1c31d1556 /kernel/power
parente4c94330e3395ae87451bded2840a25d04f27902 (diff)
[PATCH] suspend: cleanup calling of power off methods.
In the lead up to 2.6.13 I fixed a large number of reboot problems by making the calling conventions consistent. Despite checking and double checking my work it appears I missed an obvious one. The S4 suspend code for PM_DISK_PLATFORM was also calling device_shutdown without setting system_state, and was not calling the appropriate reboot_notifier. This patch fixes the bug by replacing the call of device_suspend with kernel_poweroff_prepare. Various forms of this failure have been fixed and tracked for a while. Thanks for tracking this down go to: Alexey Starikovskiy, Meelis Roos <mroos@linux.ee>, Nigel Cunningham <ncunningham@cyclades.com>, Pierre Ossman <drzeus-list@drzeus.cx> History of this bug is at: http://bugme.osdl.org/show_bug.cgi?id=4320 Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/disk.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 2d8bf054d036..761956e813f5 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -17,12 +17,12 @@
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/mount.h>
+#include <linux/pm.h>
#include "power.h"
extern suspend_disk_method_t pm_disk_mode;
-extern struct pm_ops * pm_ops;
extern int swsusp_suspend(void);
extern int swsusp_write(void);
@@ -49,13 +49,11 @@ dev_t swsusp_resume_device;
static void power_down(suspend_disk_method_t mode)
{
- unsigned long flags;
int error = 0;
- local_irq_save(flags);
switch(mode) {
case PM_DISK_PLATFORM:
- device_shutdown();
+ kernel_power_off_prepare();
error = pm_ops->enter(PM_SUSPEND_DISK);
break;
case PM_DISK_SHUTDOWN: