linux-kernel - [PATCH 02/19] gpio: wcd934x: check the return value of regmap_update

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Message-Id: <20250709-gpiochip-set-rv-gpio-remaining-v1-2-b8950f69618d@linaro.org>
Date: Wed, 09 Jul 2025 08:41:39 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>, 
 Andy Shevchenko <andy@...nel.org>, 
 Shubhrajyoti Datta <shubhrajyoti.datta@....com>, 
 Srinivas Neeli <srinivas.neeli@....com>, 
 Michal Simek <michal.simek@....com>, Nandor Han <nandor.han@...com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 patches@...nsource.cirrus.com, linux-arm-kernel@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 02/19] gpio: wcd934x: check the return value of
 regmap_update_bits()

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

regmap_update_bits() can fail so check its return value in
wcd_gpio_direction_output() for consistency with the rest of the code
and propagate any errors.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-wcd934x.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-wcd934x.c b/drivers/gpio/gpio-wcd934x.c
index 2bba27b13947f14459c32db4812f6451eddbbfe4..cfa7b0a50c8e339603bc5fc70a8d7354f3bc6486 100644
--- a/drivers/gpio/gpio-wcd934x.c
+++ b/drivers/gpio/gpio-wcd934x.c
@@ -46,9 +46,12 @@ static int wcd_gpio_direction_output(struct gpio_chip *chip, unsigned int pin,
 				     int val)
 {
 	struct wcd_gpio_data *data = gpiochip_get_data(chip);
+	int ret;
 
-	regmap_update_bits(data->map, WCD_REG_DIR_CTL_OFFSET,
-			   WCD_PIN_MASK(pin), WCD_PIN_MASK(pin));
+	ret = regmap_update_bits(data->map, WCD_REG_DIR_CTL_OFFSET,
+				 WCD_PIN_MASK(pin), WCD_PIN_MASK(pin));
+	if (ret)
+		return ret;
 
 	return regmap_update_bits(data->map, WCD_REG_VAL_CTL_OFFSET,
 				  WCD_PIN_MASK(pin),

-- 
2.48.1