diff options
| author | Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> | 2011-12-07 22:29:54 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-08 23:22:29 +0100 |
| commit | bcda53faf5814c0c6025a0bd47108adfcbe9f199 (patch) | |
| tree | a8768204a16b24436f33fac00c1bb4dcfb4fafd5 /kernel/kexec.c | |
| parent | 9b6fc5dc879bc90f765db0e95eefcf123d0d06dd (diff) | |
| download | lwn-bcda53faf5814c0c6025a0bd47108adfcbe9f199.tar.gz lwn-bcda53faf5814c0c6025a0bd47108adfcbe9f199.zip | |
PM / Sleep: Replace mutex_[un]lock(&pm_mutex) with [un]lock_system_sleep()
Using [un]lock_system_sleep() is safer than directly using mutex_[un]lock()
on 'pm_mutex', since the latter could lead to freezing failures. Hence convert
all the present users of mutex_[un]lock(&pm_mutex) to use these safe APIs
instead.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/kexec.c')
| -rw-r--r-- | kernel/kexec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index dc7bc0829286..090ee10d9604 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1523,7 +1523,7 @@ int kernel_kexec(void) #ifdef CONFIG_KEXEC_JUMP if (kexec_image->preserve_context) { - mutex_lock(&pm_mutex); + lock_system_sleep(); pm_prepare_console(); error = freeze_processes(); if (error) { @@ -1576,7 +1576,7 @@ int kernel_kexec(void) thaw_processes(); Restore_console: pm_restore_console(); - mutex_unlock(&pm_mutex); + unlock_system_sleep(); } #endif |