From: Thierry Reding <treding@xxxxxxxxxx>
Wake gpiochip_generic_request() call into the pinctrl helpers only if a
GPIO controller had any pin-ranges assigned to it. This allows a driver
to unconditionally use this helper if it supports multiple devices of
which only a subset have pin-ranges assigned to them.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/gpio/gpiolib.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f31b1d46599e..12f3c339da78 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2792,7 +2792,10 @@ static inline void gpiochip_irqchip_free_valid_mask(struct gpio_chip *gpiochip)
*/
int gpiochip_generic_request(struct gpio_chip *chip, unsigned offset)
{
- return pinctrl_gpio_request(chip->gpiodev->base + offset);
+ if (!list_empty(&chip->gpiodev->pin_ranges))
+ return pinctrl_gpio_request(chip->gpiodev->base + offset);
+
+ return 0;
}
EXPORT_SYMBOL_GPL(gpiochip_generic_request);
--
2.24.1
