On Fri, 26 Jun 2015, Shobhit Kumar wrote: > 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 > > Cc: Samuel Ortiz <[email protected]> > Cc: Linus Walleij <[email protected]> > Cc: Alexandre Courbot <[email protected]> > Cc: Thierry Reding <[email protected]> > Reviewed-by: Alexandre Courbot <[email protected]> > Reviewed-by: Linus Walleij <[email protected]> > Tested-by: Ville Syrjälä <[email protected]> > Signed-off-by: Shobhit Kumar <[email protected]> > --- > v2: Ccing maintainers > v3: Correct the subject line (Lee jones)
Acked-by: Lee Jones <[email protected]> > 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 957ede5..9d3ea4e 100644 > --- a/drivers/gpio/gpiolib.c > +++ b/drivers/gpio/gpiolib.c > @@ -1675,6 +1675,19 @@ 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 */ -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
