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author | Deepak Nibade <dnibade@nvidia.com> | 2014-07-17 08:39:13 -0400 |
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committer | Dan Willemsen <dwillemsen@nvidia.com> | 2015-03-18 15:10:31 -0400 |
commit | a84dc62b5ef54d6f714172359a4e0fe68f8802ca (patch) | |
tree | 956baedc48d24ac1a735d4c8a7d9090958dcd7eb /drivers/gpu/nvgpu/gk20a/mm_gk20a.c | |
parent | d98099c9b6b8d54dd5c8563cb824805ddce6aec4 (diff) |
gpu: nvgpu: return error from mutex_acquire() if pmu not initialized
In pmu_mutex_acquire(), we return zero (success) if
pmu->initialized is not set
Since mutex_acquire() was successful, we then call
pmu_mutex_release()
If now pmu->initialized is set in some other thread
then we proceed to validate the mutex owner and
end up causing below warning :
pmu_mutex_release: requester 0x00000000 NOT match owner 0x00000008
Hence to fix this return error from mutex_acquire()
and mutex_release() if pmu->initialized is not yet set
and in that case we proceed to call elpg enable/disable
Bug 1533644
Change-Id: Ifbb9e6a8e13f6478a13e3f9d98ced11792cc881f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/439333
GVS: Gerrit_Virtual_Submit
Reviewed-by: Naveen Kumar S <nkumars@nvidia.com>
Tested-by: Naveen Kumar S <nkumars@nvidia.com>
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/gk20a/mm_gk20a.c')
0 files changed, 0 insertions, 0 deletions