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-rw-r--r--drivers/gpu/drm/drm_sysfs.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 85da4c40694..2eee8e016b3 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -158,8 +158,15 @@ static ssize_t status_show(struct device *device,
{
struct drm_connector *connector = to_drm_connector(device);
enum drm_connector_status status;
+ int ret;
+
+ ret = mutex_lock_interruptible(&connector->dev->mode_config.mutex);
+ if (ret)
+ return ret;
status = connector->funcs->detect(connector, true);
+ mutex_unlock(&connector->dev->mode_config.mutex);
+
return snprintf(buf, PAGE_SIZE, "%s\n",
drm_get_connector_status_name(status));
}