diff options
| author | Tomeu Vizoso <tomeu.vizoso@collabora.com> | 2015-07-14 11:29:54 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-07-28 14:55:36 +0300 |
| commit | 28355f81969962cf01aef5b13d7de5b4ab0c5f13 (patch) | |
| tree | d2f124df65cc05d337ddf3958c6263c021c3eb2a /include/linux/of_gpio.h | |
| parent | 23393d49fb75ca97b179668aa86b7038c2dc0831 (diff) | |
| download | linux-28355f81969962cf01aef5b13d7de5b4ab0c5f13.tar.xz | |
gpio: defer probe if pinctrl cannot be found
When an OF node has a pin range for its GPIOs, return -EPROBE_DEFER if
the pin controller isn't available.
Otherwise, the GPIO range wouldn't be set at all unless the pin
controller probed always before the GPIO chip.
With this change, the probe of the GPIO chip will be deferred and will
be retried at a later point, hopefully once the pin controller has been
registered and probed already.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/of_gpio.h')
| -rw-r--r-- | include/linux/of_gpio.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index 69dbe312b11b..f3191828f037 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -54,7 +54,7 @@ extern int of_mm_gpiochip_add(struct device_node *np, struct of_mm_gpio_chip *mm_gc); extern void of_mm_gpiochip_remove(struct of_mm_gpio_chip *mm_gc); -extern void of_gpiochip_add(struct gpio_chip *gc); +extern int of_gpiochip_add(struct gpio_chip *gc); extern void of_gpiochip_remove(struct gpio_chip *gc); extern int of_gpio_simple_xlate(struct gpio_chip *gc, const struct of_phandle_args *gpiospec, @@ -76,7 +76,7 @@ static inline int of_gpio_simple_xlate(struct gpio_chip *gc, return -ENOSYS; } -static inline void of_gpiochip_add(struct gpio_chip *gc) { } +static inline int of_gpiochip_add(struct gpio_chip *gc) { return 0; } static inline void of_gpiochip_remove(struct gpio_chip *gc) { } #endif /* CONFIG_OF_GPIO */ |