diff options
| author |   Stefan Seyfried <seife@suse.de> | 2006-12-06 20:34:21 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:27 -0800 |
| commit | 8a05aac2631aa0e6494d9dc990f8c68ed8b8fde7 (patch) | |
| tree | 90ae9235bcffc08fea77741596c65727e80bc023 | |
| parent | [PATCH] swsusp: use __GFP_WAIT (diff) | |
| download | linux-dev-8a05aac2631aa0e6494d9dc990f8c68ed8b8fde7.tar.xz linux-dev-8a05aac2631aa0e6494d9dc990f8c68ed8b8fde7.zip | |
[PATCH] swsusp: fix platform mode
At some point after 2.6.13, in-kernel software suspend got "incomplete" for
the so-called "platform" mode. pm_ops->prepare() is never called. A
visible sign of this is the "moon" light on thinkpads not flashing during
suspend. Fix by readding the pm_ops->prepare call during suspend.
Signed-off-by: Stefan Seyfried <seife@suse.de>
Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to '')
| -rw-r--r-- | kernel/power/disk.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c index d79feeb45459..f5079231383e 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -30,6 +30,22 @@ dev_t swsusp_resume_device; sector_t swsusp_resume_block; /** + * platform_prepare - prepare the machine for hibernation using the + * platform driver if so configured and return an error code if it fails + */ + +static inline int platform_prepare(void) +{ + int error = 0; + + if (pm_disk_mode == PM_DISK_PLATFORM) { + if (pm_ops && pm_ops->prepare) + error = pm_ops->prepare(PM_SUSPEND_DISK); + } + return error; +} + +/** * power_down - Shut machine down for hibernate. * @mode: Suspend-to-disk mode * @@ -91,9 +107,15 @@ static int prepare_processes(void) goto thaw; } + error = platform_prepare(); + if (error) + goto thaw; + /* Free memory before shutting down devices. */ if (!(error = swsusp_shrink_memory())) return 0; + + platform_finish(); thaw: thaw_processes(); enable_cpus: |