diff options
| author | Alexandre Courbot <acourbot@nvidia.com> | 2013-11-16 21:39:32 +0900 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-11-25 09:02:30 +0100 |
| commit | 79697ef94c48df8831a156bbb046e94215b7300d (patch) | |
| tree | a17f59feb0de09c874c4dbeb3f5d49351467e624 /drivers/gpio | |
| parent | fd8e198cfcaa8abcc7f7525619d447f9a805e86e (diff) | |
| download | linux-79697ef94c48df8831a156bbb046e94215b7300d.tar.bz2 | |
gpiolib: fix find_chip_by_name()
find_chip_by_name() was incorrectly implemented by using
gpio_lookup_list instead of gpiod_chips to iterate through all the
registered GPIO controllers. This patch reimplements it by using
gpiochip_find() with a custom search function, which simplifies the code
on top of fixing the mistake.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 4e10b10d3ddd..d8938b9b794a 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1308,6 +1308,18 @@ struct gpio_chip *gpiochip_find(void *data, } EXPORT_SYMBOL_GPL(gpiochip_find); +static int gpiochip_match_name(struct gpio_chip *chip, void *data) +{ + const char *name = data; + + return !strcmp(chip->label, name); +} + +static struct gpio_chip *find_chip_by_name(const char *name) +{ + return gpiochip_find((void *)name, gpiochip_match_name); +} + #ifdef CONFIG_PINCTRL /** @@ -2260,23 +2272,6 @@ void gpiod_add_table(struct gpiod_lookup *table, size_t size) mutex_unlock(&gpio_lookup_lock); } -/* - * Caller must have a acquired gpio_lookup_lock - */ -static struct gpio_chip *find_chip_by_name(const char *name) -{ - struct gpio_chip *chip = NULL; - - list_for_each_entry(chip, &gpio_lookup_list, list) { - if (chip->label == NULL) - continue; - if (!strcmp(chip->label, name)) - break; - } - - return chip; -} - #ifdef CONFIG_OF static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, unsigned int idx, unsigned long *flags) |