[PATCH 5/6] drm: tegra: use crtc helper drm_crtc_from_index()

[Shawn Guo]

From: Shawn Guo <shawn....@linaro.org>

Function tegra_crtc_from_pipe() 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 at linaro.org>
Cc: Thierry Reding <thierry.reding at gmail.com>
---
 drivers/gpu/drm/tegra/drm.c | 19 +++----------------
 1 file changed, 3 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index b8be3ee4d3b8..e8ad2c1bfc76 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -806,23 +806,10 @@ static int tegra_gem_get_flags(struct drm_device *drm, 
void *data,
        .llseek = noop_llseek,
 };

-static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm,
-                                            unsigned int pipe)
-{
-       struct drm_crtc *crtc;
-
-       list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
-               if (pipe == drm_crtc_index(crtc))
-                       return crtc;
-       }
-
-       return NULL;
-}
-
 static u32 tegra_drm_get_vblank_counter(struct drm_device *drm,
                                        unsigned int pipe)
 {
-       struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
+       struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe);
        struct tegra_dc *dc = to_tegra_dc(crtc);

        if (!crtc)
@@ -833,7 +820,7 @@ static u32 tegra_drm_get_vblank_counter(struct drm_device 
*drm,

 static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe)
 {
-       struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
+       struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe);
        struct tegra_dc *dc = to_tegra_dc(crtc);

        if (!crtc)
@@ -846,7 +833,7 @@ static int tegra_drm_enable_vblank(struct drm_device *drm, 
unsigned int pipe)

 static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe)
 {
-       struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
+       struct drm_crtc *crtc = drm_crtc_from_index(drm, pipe);
        struct tegra_dc *dc = to_tegra_dc(crtc);

        if (crtc)
-- 
1.9.1