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| author | Jerry Zuo <Jerry.Zuo@amd.com> | 2017-07-31 17:10:44 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 18:16:36 -0400 |
| commit | e8cd26434df0cd8d97f31aeb4399afcdc37fcfda (patch) | |
| tree | 26614c3e36f8cb14e10d34a5431c4dcf2efe820f /drivers/gpu/drm/tegra/gr2d.c | |
| parent | f81483c4ccca0d2ceca14ee15564a14f2c34eb2c (diff) | |
drm/amd/display: Use atomic types for ref_count
Current ref_count inc/dec is not guarded by locks which leads to
a raced condition where two threads try to access the variable
at the same time. In this case, both might act on the same cached
value and inc/dec from the same value, rather than inc/dec by 2.
Signed-off-by: Jerry Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/gr2d.c')
0 files changed, 0 insertions, 0 deletions