diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-12-06 11:43:06 +0200 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-12-16 18:02:08 +0200 |
| commit | 39ead6e02ea7d19b421e9d42299d4293fed3064e (patch) | |
| tree | 251c46f76b3acd3371b0081823d45c30ba530def | |
| parent | e72bf423a60afd744d13e40ab2194044a3af5217 (diff) | |
drm/bridge: ite-it66121: 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-v2-3-c9bce1ee8bea@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
| -rw-r--r-- | drivers/gpu/drm/bridge/ite-it66121.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c index 35ae3f0e8f51..940083e5d2dd 100644 --- a/drivers/gpu/drm/bridge/ite-it66121.c +++ b/drivers/gpu/drm/bridge/ite-it66121.c @@ -1450,8 +1450,10 @@ static int it66121_audio_get_eld(struct device *dev, void *data, dev_dbg(dev, "No connector present, passing empty EDID data"); memset(buf, 0, len); } else { + mutex_lock(&ctx->connector->eld_mutex); memcpy(buf, ctx->connector->eld, min(sizeof(ctx->connector->eld), len)); + mutex_unlock(&ctx->connector->eld_mutex); } mutex_unlock(&ctx->lock); |