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 <[email protected]> --- drivers/gpio/gpiolib.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 9f3326b..63bbf5b 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1307,6 +1307,18 @@ 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 /** @@ -2212,23 +2224,6 @@ 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) -- 1.8.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
