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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250617-gpiochip-set-rv-gpio-v1-9-903703881fa2@linaro.org>
Date: Tue, 17 Jun 2025 14:24:31 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, Andy Shevchenko <andy@...nel.org>, 
 Orson Zhai <orsonzhai@...il.com>, 
 Baolin Wang <baolin.wang@...ux.alibaba.com>, 
 Chunyan Zhang <zhang.lyra@...il.com>, 
 Robert Jarzmik <robert.jarzmik@...e.fr>, Heiko Stuebner <heiko@...ech.de>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 09/12] gpio: reg: 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-reg.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-reg.c b/drivers/gpio/gpio-reg.c
index 73c7260d89c083a702b1d914ddca7a573a37de4a..d5f3d8f18b405d124b17c338d79846214f9e97de 100644
--- a/drivers/gpio/gpio-reg.c
+++ b/drivers/gpio/gpio-reg.c
@@ -57,7 +57,7 @@ static int gpio_reg_direction_input(struct gpio_chip *gc, unsigned offset)
 	return r->direction & BIT(offset) ? 0 : -ENOTSUPP;
 }
 
-static void gpio_reg_set(struct gpio_chip *gc, unsigned offset, int value)
+static int gpio_reg_set(struct gpio_chip *gc, unsigned int offset, int value)
 {
 	struct gpio_reg *r = to_gpio_reg(gc);
 	unsigned long flags;
@@ -72,6 +72,8 @@ static void gpio_reg_set(struct gpio_chip *gc, unsigned offset, int value)
 	r->out = val;
 	writel_relaxed(val, r->reg);
 	spin_unlock_irqrestore(&r->lock, flags);
+
+	return 0;
 }
 
 static int gpio_reg_get(struct gpio_chip *gc, unsigned offset)
@@ -157,7 +159,7 @@ struct gpio_chip *gpio_reg_init(struct device *dev, void __iomem *reg,
 	r->gc.get_direction = gpio_reg_get_direction;
 	r->gc.direction_input = gpio_reg_direction_input;
 	r->gc.direction_output = gpio_reg_direction_output;
-	r->gc.set = gpio_reg_set;
+	r->gc.set_rv = gpio_reg_set;
 	r->gc.get = gpio_reg_get;
 	r->gc.set_multiple = gpio_reg_set_multiple;
 	if (irqs)

-- 
2.48.1