diff options
| author | Xilin Wu <sophon@radxa.com> | 2026-09-30 20:41:48 +0800 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> | 2026-10-01 05:12:06 +0300 |
| commit | 62c6146e5fde2e47f051dd2aa29b99bc469349bf (patch) | |
| tree | f202923585f48e7f9fe1533a52a6781fda707579 /tools/lib/python/kdoc | |
| parent | 7af226f9aa59f818303059e44e28e19c2cb9d4f8 (diff) | |
drm/msm/dp: Serialize HPD state updates
The plug and detect paths hold plugged_lock while accessing the sink
state, but IRQ-HPD processing updates the same state without that lock.
Unplug also changes the video-test flag and AUX transfer gate before
acquiring the lock.
Cover those updates with plugged_lock so that users of the connection
lock cannot observe partially updated HPD state. This also lets stream
failure cleanup decide whether to preserve AUX while excluding HPD
processing.
Assisted-by: LLM
Signed-off-by: Xilin Wu <sophon@radxa.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/757251/
Link: https://lore.kernel.org/r/20260930-msm-dp-hdr10-v1-4-dbbf8b2b42bc@radxa.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Diffstat (limited to 'tools/lib/python/kdoc')
0 files changed, 0 insertions, 0 deletions