From d18a96620411298f7925bf9a9e26e9e7add8ea2b Mon Sep 17 00:00:00 2001
From: Steven Price <steven.price@arm.com>
Date: Fri, 6 Sep 2019 15:20:53 +0100
Subject: drm/panfrost: Remove NULL checks for regulator
Git-commit: d18a96620411298f7925bf9a9e26e9e7add8ea2b
Patch-mainline: v5.4-rc1
References: bsc#1152489

devm_regulator_get() is now used to populate pfdev->regulator which
ensures that this cannot be NULL (a dummy regulator will be returned if
necessary). So remove the checks in panfrost_devfreq_target().

Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/3e3a2c8a-b4fc-8af6-39e1-b26160db2c7c@arm.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/panfrost/panfrost_devfreq.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index a1f5fa6a742a..12ff77dacc95 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -39,7 +39,7 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
 	 * If frequency scaling from low to high, adjust voltage first.
 	 * If frequency scaling from high to low, adjust frequency first.
 	 */
-	if (old_clk_rate < target_rate && pfdev->regulator) {
+	if (old_clk_rate < target_rate) {
 		err = regulator_set_voltage(pfdev->regulator, target_volt,
 					    target_volt);
 		if (err) {
@@ -53,14 +53,12 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
 	if (err) {
 		dev_err(dev, "Cannot set frequency %lu (%d)\n", target_rate,
 			err);
-		if (pfdev->regulator)
-			regulator_set_voltage(pfdev->regulator,
-					      pfdev->devfreq.cur_volt,
-					      pfdev->devfreq.cur_volt);
+		regulator_set_voltage(pfdev->regulator, pfdev->devfreq.cur_volt,
+				      pfdev->devfreq.cur_volt);
 		return err;
 	}
 
-	if (old_clk_rate > target_rate && pfdev->regulator) {
+	if (old_clk_rate > target_rate) {
 		err = regulator_set_voltage(pfdev->regulator, target_volt,
 					    target_volt);
 		if (err)
-- 
2.28.0