diff options
| author | Rabin Vincent <rabin@rab.in> | 2015-07-31 14:48:56 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-08-03 10:52:02 +0200 |
| commit | 8b67a1f0ad1f260f1a4032d5f7b032ac113bfa7d (patch) | |
| tree | d30b035ee0e8b8577c1c918ffc2fa39acf7c8955 /drivers/gpio/gpiolib.c | |
| parent | gpio: mpc8xxx: Convert mpc8xxx_gpio_chip.lock to raw_spinlock (diff) | |
| download | linux-8b67a1f0ad1f260f1a4032d5f7b032ac113bfa7d.tar.xz linux-8b67a1f0ad1f260f1a4032d5f7b032ac113bfa7d.zip | |
gpio: don't override irq_*_resources() callbacks
If the driver has specified its own irq_{request/release}_resources()
functions, don't override them. The gpio-etraxfs driver will use this.
Signed-off-by: Rabin Vincent <rabin@rab.in>
[Added a small comment blurb]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -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 |