diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 1b5b8da71154..34f95fbc884a 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -641,8 +641,16 @@ int gpiochip_irqchip_add(struct gpio_chip *gpiochip, gpiochip->irqchip = NULL; return -EINVAL; } - irqchip->irq_request_resources = gpiochip_irq_reqres; - irqchip->irq_release_resources = gpiochip_irq_relres; + + /* + * It is possible for a driver to override this, but only if the + * alternative functions are both implemented. + */ + if (!irqchip->irq_request_resources && + !irqchip->irq_release_resources) { + irqchip->irq_request_resources = gpiochip_irq_reqres; + irqchip->irq_release_resources = gpiochip_irq_relres; + } /* * Prepare the mapping since the irqchip shall be orthogonal to |