From fbd03587ba732c612b8a569d1cf5bed72bd3a27c Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 17 Feb 2026 14:11:49 -0800 Subject: [PATCH] gpio: amd-fch: ionly return allowed values from amd_fch_gpio_get() As of 86ef402d805d ("gpiolib: sanitize the return value of gpio_chip::get()") gpiolib requires drivers implementing GPIOs to only return 0, 1 or negative error for the get() callbacks. Ensure that amd-fch complies with this requirement. Fixes: 86ef402d805d ("gpiolib: sanitize the return value of gpio_chip::get()") Reported-and-tested-by: Tj Signed-off-by: Dmitry Torokhov Link: https://patch.msgid.link/aZTlwnvHt2Gho4yN@google.com Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpio-amd-fch.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpio-amd-fch.c b/drivers/gpio/gpio-amd-fch.c index e6c6c3ec7656..9f329938202b 100644 --- a/drivers/gpio/gpio-amd-fch.c +++ b/drivers/gpio/gpio-amd-fch.c @@ -8,6 +8,7 @@ * */ +#include #include #include #include @@ -120,15 +121,15 @@ static int amd_fch_gpio_get(struct gpio_chip *gc, unsigned int offset) { unsigned long flags; - int ret; + u32 val; struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc); void __iomem *ptr = amd_fch_gpio_addr(priv, offset); spin_lock_irqsave(&priv->lock, flags); - ret = (readl_relaxed(ptr) & AMD_FCH_GPIO_FLAG_READ); + val = readl_relaxed(ptr); spin_unlock_irqrestore(&priv->lock, flags); - return ret; + return FIELD_GET(AMD_FCH_GPIO_FLAG_READ, val); } static int amd_fch_gpio_request(struct gpio_chip *chip, -- 2.30.2