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| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-12-06 12:43:13 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-12-16 19:02:08 +0300 |
| commit | 81a9a93b169a273ccc4a9a1ee56f17e9981d3f98 (patch) | |
| tree | 77e0a67dbe9869c0f6a8dee2f9a43f8cbfc409ca /drivers/gpu/drm/vc4 | |
| parent | e99c0b517bcd53cf61f998a3c4291333401cb391 (diff) | |
| download | linux-81a9a93b169a273ccc4a9a1ee56f17e9981d3f98.tar.xz | |
drm/vc4: hdmi: 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>
Link: https://patchwork.freedesktop.org/patch/msgid/20241206-drm-connector-eld-mutex-v2-10-c9bce1ee8bea@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/vc4')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 23c6a823ab3e..203293a8beca 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -2220,9 +2220,9 @@ static int vc4_hdmi_audio_get_eld(struct device *dev, void *data, struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); struct drm_connector *connector = &vc4_hdmi->connector; - mutex_lock(&vc4_hdmi->mutex); + mutex_lock(&connector->eld_mutex); memcpy(buf, connector->eld, min(sizeof(connector->eld), len)); - mutex_unlock(&vc4_hdmi->mutex); + mutex_unlock(&connector->eld_mutex); return 0; } |