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 <jonas@kwiboo.se>
Reviewed-by: Quanyang Wang <quanyang.wang@windriver.com>
diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c
index d9bda74..d9c7689 100644
--- a/drivers/pinctrl/pinctrl-uclass.c
+++ b/drivers/pinctrl/pinctrl-uclass.c
@@ -209,7 +209,7 @@
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;
}