In case we unload and load a driver module again that is registering a lookup table, without this it will result in multiple entries. Provide an option to remove the lookup table on driver unload v2: Ccing maintainers Cc: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx> Cc: Alexandre Courbot <gnurou@xxxxxxxxx> Cc: Thierry Reding <thierry.reding@xxxxxxxxx> Reviewed-by: Alexandre Courbot <acourbot@xxxxxxxxxx> Signed-off-by: Shobhit Kumar <shobhit.kumar@xxxxxxxxx> --- drivers/gpio/gpiolib.c | 13 +++++++++++++ include/linux/gpio/machine.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 59eaa23..2420af9 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1658,6 +1658,19 @@ void gpiod_add_lookup_table(struct gpiod_lookup_table *table) mutex_unlock(&gpio_lookup_lock); } +/** + * gpiod_remove_lookup_table() - unregister GPIO device consumers + * @table: table of consumers to unregister + */ +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) +{ + mutex_lock(&gpio_lookup_lock); + + list_del(&table->list); + + mutex_unlock(&gpio_lookup_lock); +} + static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id, unsigned int idx, enum gpio_lookup_flags *flags) diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h index e270614..c0d712d 100644 --- a/include/linux/gpio/machine.h +++ b/include/linux/gpio/machine.h @@ -57,5 +57,6 @@ struct gpiod_lookup_table { } void gpiod_add_lookup_table(struct gpiod_lookup_table *table); +void gpiod_remove_lookup_table(struct gpiod_lookup_table *table); #endif /* __LINUX_GPIO_MACHINE_H */ -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html