drm/exynos: fix duplicated mutex lock issue

exynos_drm_crtc_dpms function doesn't need mutex lock
because mutex lock was called by drm framework so this
patch removes mutex lock call from that function to avoid
duplicated mutex locking.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index b612bf5bc1a8..8bd4d7ed964b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -66,7 +66,6 @@ struct exynos_drm_crtc {
 
 static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
 {
-        struct drm_device *dev = crtc->dev;
         struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
 
         DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
@@ -76,12 +75,8 @@ static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
                 return;
         }
 
-        mutex_lock(&dev->struct_mutex);
-
         exynos_drm_fn_encoder(crtc, &mode, exynos_drm_encoder_crtc_dpms);
         exynos_crtc->dpms = mode;
-
-        mutex_unlock(&dev->struct_mutex);
 }
 
 static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)