diff options
| author | Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> | 2012-02-04 22:26:38 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-02-09 23:55:54 +0100 |
| commit | 51d6ff7acd920379f54d0be4dbe844a46178a65f (patch) | |
| tree | b016233eaf9dd4f1698ca6e8e649d1df905a48ec /kernel/power | |
| parent | 9045a05044268b075c13bb0284601b24959dc3c6 (diff) | |
| download | linux-51d6ff7acd920379f54d0be4dbe844a46178a65f.tar.bz2 | |
PM / Hibernate: Thaw kernel threads in hibernation_snapshot() in error/test path
In the hibernation call path, the kernel threads are frozen inside
hibernation_snapshot(). If we happen to encounter an error further down
the road or if we are exiting early due to a successful freezer test,
then thaw kernel threads before returning to the caller.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/hibernate.c | 6 | ||||
| -rw-r--r-- | kernel/power/user.c | 8 |
2 files changed, 6 insertions, 8 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index a5d4cf0aa03e..c6dee739080c 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -343,13 +343,13 @@ int hibernation_snapshot(int platform_mode) * successful freezer test. */ freezer_test_done = true; - goto Cleanup; + goto Thaw; } error = dpm_prepare(PMSG_FREEZE); if (error) { dpm_complete(PMSG_RECOVER); - goto Cleanup; + goto Thaw; } suspend_console(); @@ -385,6 +385,8 @@ int hibernation_snapshot(int platform_mode) platform_end(platform_mode); return error; + Thaw: + thaw_kernel_threads(); Cleanup: swsusp_free(); goto Close; diff --git a/kernel/power/user.c b/kernel/power/user.c index 3e100075b13c..7bee91f9af51 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -249,16 +249,12 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, } pm_restore_gfp_mask(); error = hibernation_snapshot(data->platform_support); - if (error) { - thaw_kernel_threads(); - } else { + if (!error) { error = put_user(in_suspend, (int __user *)arg); if (!error && !freezer_test_done) data->ready = 1; - if (freezer_test_done) { + if (freezer_test_done) freezer_test_done = false; - thaw_kernel_threads(); - } } break; |