diff options
author | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | 2009-06-08 13:17:31 -0400 |
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committer | Dave Jones <davej@redhat.com> | 2009-09-01 12:45:18 -0400 |
commit | 395913d0b1db37092ea3d9d69b832183b1dd84c5 (patch) | |
tree | 2b1aff8df27bfb02332ee4fe207a989244583c0a /tools | |
parent | 0e625ac153126a0a62b7635fa9dc91f87ff39e38 (diff) |
[CPUFREQ] remove rwsem lock from CPUFREQ_GOV_STOP call (second call site)
remove rwsem lock from CPUFREQ_GOV_STOP call (second call site)
commit 42a06f2166f2f6f7bf04f32b4e823eacdceafdc9
Missed a call site for CPUFREQ_GOV_STOP to remove the rwlock taken around the
teardown. To make a long story short, the rwlock write-lock causes a circular
dependency with cancel_delayed_work_sync(), because the timer handler takes the
read lock.
Note that all callers to __cpufreq_set_policy are taking the rwsem. All sysfs
callers (writers) hold the write rwsem at the earliest sysfs calling stage.
However, the rwlock write-lock is not needed upon governor stop.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
CC: rjw@sisk.pl
CC: mingo@elte.hu
CC: Shaohua Li <shaohua.li@intel.com>
CC: Pekka Enberg <penberg@cs.helsinki.fi>
CC: Dave Young <hidave.darkstar@gmail.com>
CC: "Rafael J. Wysocki" <rjw@sisk.pl>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: trenn@suse.de
CC: sven.wegener@stealer.net
CC: cpufreq@vger.kernel.org
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions