From: Rafael J. Wysocki <[email protected]>
During hibernation we call hibernation_ops->prepare() before creating the image,
but then, before saving it, we cancel the power transition by calling
hibernation_ops->finish(). Thus prior to calling hibernation_ops->enter() we
should let the platform firmware know that we're going to enter the low power
state after all.
Signed-off-by: Rafael J. Wysocki <[email protected]>
---
kernel/power/disk.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
Index: linux-2.6.22-rc2/kernel/power/disk.c
===================================================================
--- linux-2.6.22-rc2.orig/kernel/power/disk.c 2007-05-19 11:25:56.000000000 +0200
+++ linux-2.6.22-rc2/kernel/power/disk.c 2007-05-19 12:43:52.000000000 +0200
@@ -205,12 +205,23 @@ int hibernation_restore(int platform_mod
int hibernation_platform_enter(void)
{
+ int error;
+
if (hibernation_ops) {
kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK);
- return hibernation_ops->enter();
+ /*
+ * We have cancelled the power transition by running
+ * hibernation_ops->finish() before saving the image, so we
+ * should let the firmware know that we're going to enter the
+ * sleep state after all
+ */
+ error = hibernation_ops->prepare();
+ if (!error)
+ error = hibernation_ops->enter();
} else {
- return -ENOSYS;
+ error = -ENOSYS;
}
+ return error;
}
/**
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
