drm: zte: use crtc helper drm_crtc_from_index()

Function zx_find_crtc() does the exactly same thing as what crtc helper
drm_crtc_from_index() provides.  Use the helper to save some code.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1483015290-16660-3-git-send-email-shawnguo@kernel.org

diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c
index 73fe15c17c32406280b8a7e24ad136239c19c37e..a86e3a5852a2723358b8a7c09b83ffde64299a5d 100644 (file)
--- a/drivers/gpu/drm/zte/zx_vou.c
+++ b/drivers/gpu/drm/zte/zx_vou.c
@@ -355,17 +355,6 @@ static int zx_crtc_init(struct drm_device *drm, struct zx_vou_hw *vou,
        return 0;
 }
 
-static inline struct drm_crtc *zx_find_crtc(struct drm_device *drm, int pipe)
-{
-       struct drm_crtc *crtc;
-
-       list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
-               if (crtc->index == pipe)
-                       return crtc;
-
-       return NULL;
-}
-
 int zx_vou_enable_vblank(struct drm_device *drm, unsigned int pipe)
 {
        struct drm_crtc *crtc;
@@ -373,7 +362,7 @@ int zx_vou_enable_vblank(struct drm_device *drm, unsigned int pipe)
        struct zx_vou_hw *vou;
        u32 int_frame_mask;
 
-       crtc = zx_find_crtc(drm, pipe);
+       crtc = drm_crtc_from_index(drm, pipe);
        if (!crtc)
                return 0;
 
@@ -393,7 +382,7 @@ void zx_vou_disable_vblank(struct drm_device *drm, unsigned int pipe)
        struct zx_crtc *zcrtc;
        struct zx_vou_hw *vou;
 
-       crtc = zx_find_crtc(drm, pipe);
+       crtc = drm_crtc_from_index(drm, pipe);
        if (!crtc)
                return;