linux-kernel - [PATCH 09/12] gpio: stp-xway: use new GPIO line value setter callbacks

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Message-Id: <20250625-gpiochip-set-rv-gpio-round2-v1-9-bc110a3b52ff@linaro.org>
Date: Wed, 25 Jun 2025 12:33:32 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Ludovic Desroches <ludovic.desroches@...rochip.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Andy Shevchenko <andy@...nel.org>, 
 Thorsten Scherer <t.scherer@...elmann.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Orson Zhai <orsonzhai@...il.com>, 
 Baolin Wang <baolin.wang@...ux.alibaba.com>, 
 Chunyan Zhang <zhang.lyra@...il.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 09/12] gpio: stp-xway: use new GPIO line value setter
 callbacks

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

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/gpio/gpio-stp-xway.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpio/gpio-stp-xway.c b/drivers/gpio/gpio-stp-xway.c
index 5a6406d1f03aa75e82423f7c5740fdb3df42dd4b..fdda8de6ca366662aec1fccb475f0698fb478ef5 100644
--- a/drivers/gpio/gpio-stp-xway.c
+++ b/drivers/gpio/gpio-stp-xway.c
@@ -113,7 +113,7 @@ static int xway_stp_get(struct gpio_chip *gc, unsigned int gpio)
  *
  * Set the shadow value and call ltq_ebu_apply.
  */
-static void xway_stp_set(struct gpio_chip *gc, unsigned gpio, int val)
+static int xway_stp_set(struct gpio_chip *gc, unsigned int gpio, int val)
 {
 	struct xway_stp *chip = gpiochip_get_data(gc);
 
@@ -124,6 +124,8 @@ static void xway_stp_set(struct gpio_chip *gc, unsigned gpio, int val)
 	xway_stp_w32(chip->virt, chip->shadow, XWAY_STP_CPU0);
 	if (!chip->reserved)
 		xway_stp_w32_mask(chip->virt, 0, XWAY_STP_CON_SWU, XWAY_STP_CON0);
+
+	return 0;
 }
 
 /**
@@ -136,9 +138,7 @@ static void xway_stp_set(struct gpio_chip *gc, unsigned gpio, int val)
  */
 static int xway_stp_dir_out(struct gpio_chip *gc, unsigned gpio, int val)
 {
-	xway_stp_set(gc, gpio, val);
-
-	return 0;
+	return xway_stp_set(gc, gpio, val);
 }
 
 /**
@@ -249,7 +249,7 @@ static int xway_stp_probe(struct platform_device *pdev)
 	chip->gc.label = "stp-xway";
 	chip->gc.direction_output = xway_stp_dir_out;
 	chip->gc.get = xway_stp_get;
-	chip->gc.set = xway_stp_set;
+	chip->gc.set_rv = xway_stp_set;
 	chip->gc.request = xway_stp_request;
 	chip->gc.base = -1;
 	chip->gc.owner = THIS_MODULE;

-- 
2.48.1