[PATCH] drm/panel: lvds: Drop unnecessary NULL pointer checks for lvds->enable_gpio

[Liu Ying]

gpiod_set_value_cansleep() does NULL pointer check for passed in
gpio descriptor's pointer, so it's unnecessary to do that check
before calling that function. This patch drops those checks from
this panel driver.

Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Cc: Thierry Reding <thierry.reding at gmail.com>
Cc: Sam Ravnborg <sam at ravnborg.org>
Cc: David Airlie <airlied at linux.ie>
Cc: Daniel Vetter <daniel at ffwll.ch>
Signed-off-by: Liu Ying <victor.liu at nxp.com>
---
 drivers/gpu/drm/panel/panel-lvds.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index 59a8d99..19f11fa 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -50,8 +50,7 @@ static int panel_lvds_unprepare(struct drm_panel *panel)
 {
 	struct panel_lvds *lvds = to_panel_lvds(panel);
 
-	if (lvds->enable_gpio)
-		gpiod_set_value_cansleep(lvds->enable_gpio, 0);
+	gpiod_set_value_cansleep(lvds->enable_gpio, 0);
 
 	if (lvds->supply)
 		regulator_disable(lvds->supply);
@@ -74,8 +73,7 @@ static int panel_lvds_prepare(struct drm_panel *panel)
 		}
 	}
 
-	if (lvds->enable_gpio)
-		gpiod_set_value_cansleep(lvds->enable_gpio, 1);
+	gpiod_set_value_cansleep(lvds->enable_gpio, 1);
 
 	return 0;
 }
-- 
2.7.4