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| author | Imre Deak <imre.deak@intel.com> | 2014-10-24 20:29:09 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-10-27 18:42:26 +0100 |
| commit | 246ef766743618a7cab059d6c4993270075b173e (patch) | |
| tree | 61f529f3af94301e7032bfd5786d91a264e65698 /drivers/base | |
| parent | cac7f2429872d3733dc3f9915857b1691da2eb2f (diff) | |
| download | linux-246ef766743618a7cab059d6c4993270075b173e.tar.gz linux-246ef766743618a7cab059d6c4993270075b173e.tar.bz2 linux-246ef766743618a7cab059d6c4993270075b173e.zip | |
PM / Sleep: fix async suspend_late/freeze_late error handling
If an asynchronous suspend_late or freeze_late callback fails
during the SUSPEND, FREEZE or QUIESCE phases, we don't propagate the
corresponding error correctly, in effect ignoring the error and
continuing the suspend-to-ram/hibernation. During suspend-to-ram this
could leave some devices without a valid saved context, leading to a
failure to reinitialize them during resume. During hibernation this
could leave some devices active interfeering with the creation /
restoration of the hibernation image. Also this could leave the
corresponding devices without a valid saved context and failure to
reinitialize them during resume.
Fixes: de377b397272 (PM / sleep: Asynchronous threads for suspend_late)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Cc: 3.15+ <stable@vger.kernel.org> # 3.15+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 44973196d3fd..9717d5f20139 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -1266,6 +1266,8 @@ int dpm_suspend_late(pm_message_t state) } mutex_unlock(&dpm_list_mtx); async_synchronize_full(); + if (!error) + error = async_error; if (error) { suspend_stats.failed_suspend_late++; dpm_save_failed_step(SUSPEND_SUSPEND_LATE); |