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| author | Sang-Hun Lee <sanlee@nvidia.com> | 2014-06-03 16:28:45 -0400 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2015-03-18 15:10:33 -0400 |
| commit | ebf991e990f43f664340016c6825ee4c3cbd5e78 (patch) | |
| tree | 80c9e184f75114f8b114ab17c7ab8f394439122a /drivers/gpu/nvgpu/gk20a/hal.h | |
| parent | 5312fd2a1852cd965c8aea473aa357f4d9d65318 (diff) | |
gpu: nvgpu: flush write before unlocking
- gk20a_enable is reading the clock after unlocking the spinlock
to flush any previous write
- This could lead to a race if any write afterwards assume
the write has been completed already
- Read the clock before unlocking to ensure all previous writes
have been completed before letting any other thread use gk20a
Bug 200007520
Change-Id: I737fbbe825c68b25ca256c4a8ee2b99aa8baf0f5
Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com>
Reviewed-on: http://git-master/r/418485
(cherry picked from commit 2aed542a719caa69620766bf2dceefe50626c189)
Reviewed-on: http://git-master/r/437842
Reviewed-by: Mitch Luban <mluban@nvidia.com>
Tested-by: Mitch Luban <mluban@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/gk20a/hal.h')
0 files changed, 0 insertions, 0 deletions