[PATCH 10/10] drm/vc4: hdmi: use eld_mutex to protect access to connector->eld

[Dmitry Baryshkov]

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.

Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 
b9fc4d981cf4d682bedd978795cf7284d2650e74..7295834e75fb1ab0cd241ed274e675567e66870b
 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -2221,9 +2221,9 @@ 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;
 }

-- 
2.39.5