diff options
| author | Dmitry Baryshkov | 2024-12-06 11:43:10 +0200 |
|---|---|---|
| committer | Dmitry Baryshkov | 2024-12-16 18:02:08 +0200 |
| commit | 9aad030dc64f6994dc5de7bb81ceca55dbc555c3 (patch) | |
| tree | 6ffcfd364f63536cb29cc0cacd495a5ae8b92937 | |
| parent | 5db44dd1528625c73a31542df2a68972327c9897 (diff) | |
drm/msm/dp: use eld_mutex to protect access to connector->eld
Reading access to connector->eld can happen at the same time the
drm_edid_to_eld() updates the data. Take the newly added eld_mutex in
order to protect connector->eld from concurrent access.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241206-drm-connector-eld-mutex-v2-7-c9bce1ee8bea@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_audio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_audio.c b/drivers/gpu/drm/msm/dp/dp_audio.c index 74e01a5dd419..0fd5e0abaf07 100644 --- a/drivers/gpu/drm/msm/dp/dp_audio.c +++ b/drivers/gpu/drm/msm/dp/dp_audio.c @@ -414,8 +414,10 @@ static int msm_dp_audio_get_eld(struct device *dev, return -ENODEV; } + mutex_lock(&msm_dp_display->connector->eld_mutex); memcpy(buf, msm_dp_display->connector->eld, min(sizeof(msm_dp_display->connector->eld), len)); + mutex_unlock(&msm_dp_display->connector->eld_mutex); return 0; } |