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| author | Rob Clark <robdclark@chromium.org> | 2022-08-07 09:09:01 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-20 12:39:44 +0200 |
| commit | 1b80691d5115b76c95ca1056d0054a441ed08260 (patch) | |
| tree | 2df55a5d94bc7d648c0985ffc5868ad6389a2768 /Documentation/devicetree/bindings/iio | |
| parent | a9687a2dc7e174d60d8f3d1f39d5c0be7dc13ec4 (diff) | |
drm/msm/rd: Fix FIFO-full deadlock
[ Upstream commit 174974d8463b77c2b4065e98513adb204e64de7d ]
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: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/iio')
0 files changed, 0 insertions, 0 deletions