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| author | Rob Clark <robdclark@chromium.org> | 2022-08-07 09:09:01 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2022-09-18 09:37:55 -0700 |
| commit | 323894610ba027dddc86e8a5c6e7982588d845dd (patch) | |
| tree | 6a82e1869b139e4a7c1dab200e6aeb0e5a818172 /drivers/gpu/drm/sprd | |
| parent | e93e45b1aa4909926b5c2e195eadbed1899e9e50 (diff) | |
drm/msm/rd: Fix FIFO-full deadlock
If the previous thing cat'ing $debugfs/rd left the FIFO full, then
subsequent open could deadlock in rd_write() (because open is blocked,
not giving a chance for read() to consume any data in the FIFO). Also
it is generally a good idea to clear out old data from the FIFO.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/496706/
Link: https://lore.kernel.org/r/20220807160901.2353471-2-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/sprd')
0 files changed, 0 insertions, 0 deletions