diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-12-06 11:43:11 +0200 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-12-16 18:02:08 +0200 |
| commit | b54c14f82428c8a602392d4cae1958a71a578132 (patch) | |
| tree | fd517245dd0372e13cbc892ff8545b51575669d9 | |
| parent | 9aad030dc64f6994dc5de7bb81ceca55dbc555c3 (diff) | |
drm/radeon: 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-v2-8-c9bce1ee8bea@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_audio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c index 5b69cc8011b4..8d64ba18572e 100644 --- a/drivers/gpu/drm/radeon/radeon_audio.c +++ b/drivers/gpu/drm/radeon/radeon_audio.c @@ -775,8 +775,10 @@ static int radeon_audio_component_get_eld(struct device *kdev, int port, if (!dig->pin || dig->pin->id != port) continue; *enabled = true; + mutex_lock(&connector->eld_mutex); ret = drm_eld_size(connector->eld); memcpy(buf, connector->eld, min(max_bytes, ret)); + mutex_unlock(&connector->eld_mutex); break; } |