From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Date: Wed, 19 Feb 2020 09:47:02 +0000 (+0100)
Subject: gpiolib: use gpiochip_get_desc() where applicable
X-Git-Tag: v5.15~4145^2~28
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1739a2d852265977836152be43073ead5c64d1ea;p=platform%2Fkernel%2Flinux-starfive.git

gpiolib: use gpiochip_get_desc() where applicable

Whenever retrieving a descriptor from a gpiochip: use the provided
helper which checks for errors.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200219094702.6463-1-brgl@bgdev.pl
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f73077f..611709f 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -3143,7 +3143,9 @@ const char *gpiochip_is_requested(struct gpio_chip *chip, unsigned offset)
 	if (offset >= chip->ngpio)
 		return NULL;
 
-	desc = &chip->gpiodev->descs[offset];
+	desc = gpiochip_get_desc(chip, offset);
+	if (IS_ERR(desc))
+		return NULL;
 
 	if (test_bit(FLAG_REQUESTED, &desc->flags) == 0)
 		return NULL;