diff options
| -rw-r--r-- | drivers/gpu/drm/drm_sysfs.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index 85da4c40694c..2eee8e016b38 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)); } |