From 31cf22099bc3243ba2779d55fba0282bbcf29ddf Mon Sep 17 00:00:00 2001 From: Jonas Karlman Date: Fri, 10 May 2024 19:35:51 +0000 Subject: [PATCH] pinctrl: Fix pinctrl_gpio_get_pinctrl_and_offset() Linux kernel Documentation/devicetree/bindings/gpio/gpio.txt define the format of the gpio-ranges prop as: The format is: <[pin controller phandle], [GPIO controller offset], [pin controller offset], [number of pins]>; Example: gpio-ranges = <&foo 0 20 10>, <&bar 10 50 20>; This means: - pins 20..29 on pin controller "foo" is mapped to GPIO line 0..9 and - pins 50..69 on pin controller "bar" is mapped to GPIO line 10..29 For this example, a call to pinctrl_gpio_get_pinctrl_and_offset() using offset 10 incorrectly return pin controller "foo" instead of "bar". Fix this by using an exclusive range check. Fixes: d0bb00adccb8 ("pinctrl: fix pinctrl_gpio_get_pinctrl_and_offset for gpio-ranges array") Signed-off-by: Jonas Karlman Reviewed-by: Quanyang Wang --- drivers/pinctrl/pinctrl-uclass.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c index d9bda7494e..d9c76898a9 100644 --- a/drivers/pinctrl/pinctrl-uclass.c +++ b/drivers/pinctrl/pinctrl-uclass.c @@ -209,7 +209,7 @@ pinctrl_gpio_get_pinctrl_and_offset(struct udevice *dev, unsigned offset, pfc_base = args.args[1]; pfc_pins = args.args[2]; - if (offset >= gpio_offset && offset <= gpio_offset + pfc_pins) + if (offset >= gpio_offset && offset < gpio_offset + pfc_pins) break; } -- 2.39.5