From: Dmitry Baryshkov Date: Fri, 6 Dec 2024 09:43:11 +0000 (+0200) Subject: drm/radeon: use eld_mutex to protect access to connector->eld X-Git-Tag: v6.14-rc1~174^2~13^2~43 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b54c14f82428c8a602392d4cae1958a71a578132;p=thirdparty%2Fkernel%2Flinux.git 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 Link: https://patchwork.freedesktop.org/patch/msgid/20241206-drm-connector-eld-mutex-v2-8-c9bce1ee8bea@linaro.org Signed-off-by: Dmitry Baryshkov --- diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c index 5b69cc8011b42..8d64ba18572ec 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; }