1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
index d1d5306ebf24..f6e0b5395051 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
@@ -313,9 +313,9 @@ static int shmob_drm_pm_resume(struct device *dev)
 {
         struct shmob_drm_device *sdev = dev_get_drvdata(dev);
 
-        mutex_lock(&sdev->ddev->mode_config.mutex);
+        drm_modeset_lock_all(sdev->ddev);
         shmob_drm_crtc_resume(&sdev->crtc);
-        mutex_unlock(&sdev->ddev->mode_config.mutex);
+        drm_modeset_unlock_all(sdev->ddev);
 
         drm_kms_helper_poll_enable(sdev->ddev);
         return 0;