From: Fabio Estevam <fabio.estevam@nxp.com>
Date: Sun, 16 Jul 2017 21:05:39 -0300
Subject: drm/panel: simple: Remove unneeded gpiod NULL check
Git-commit: 756b918d0df3a0945fe8bcca434b58573cdddc29
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The gpiod API checks for NULL descriptors, so there is no need to
duplicate the check in the driver.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1500249939-8075-1-git-send-email-festevam@gmail.com

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/panel/panel-simple.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -187,8 +187,7 @@ static int panel_simple_unprepare(struct
 	if (!p->prepared)
 		return 0;
 
-	if (p->enable_gpio)
-		gpiod_set_value_cansleep(p->enable_gpio, 0);
+	gpiod_set_value_cansleep(p->enable_gpio, 0);
 
 	regulator_disable(p->supply);
 
@@ -214,8 +213,7 @@ static int panel_simple_prepare(struct d
 		return err;
 	}
 
-	if (p->enable_gpio)
-		gpiod_set_value_cansleep(p->enable_gpio, 1);
+	gpiod_set_value_cansleep(p->enable_gpio, 1);
 
 	if (p->desc->delay.prepare)
 		msleep(p->desc->delay.prepare);