diff options
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 76 |
1 files changed, 38 insertions, 38 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index f2beb72..1745ce5 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -194,6 +194,44 @@ void acpi_gpiochip_request_interrupts(struct gpio_chip *chip) } EXPORT_SYMBOL(acpi_gpiochip_request_interrupts); +/** + * acpi_gpiochip_free_interrupts() - Free GPIO _EVT ACPI event interrupts. + * @chip: gpio chip + * + * Free interrupts associated with the _EVT method for the given GPIO chip. + * + * The remaining ACPI event interrupts associated with the chip are freed + * automatically. + */ +void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) +{ + acpi_handle handle; + acpi_status status; + struct list_head *evt_pins; + struct acpi_gpio_evt_pin *evt_pin, *ep; + + if (!chip->dev || !chip->to_irq) + return; + + handle = ACPI_HANDLE(chip->dev); + if (!handle) + return; + + status = acpi_get_data(handle, acpi_gpio_evt_dh, (void **)&evt_pins); + if (ACPI_FAILURE(status)) + return; + + list_for_each_entry_safe_reverse(evt_pin, ep, evt_pins, node) { + devm_free_irq(chip->dev, evt_pin->irq, evt_pin); + list_del(&evt_pin->node); + kfree(evt_pin); + } + + acpi_detach_data(handle, acpi_gpio_evt_dh); + kfree(evt_pins); +} +EXPORT_SYMBOL(acpi_gpiochip_free_interrupts); + struct acpi_gpio_lookup { struct acpi_gpio_info info; int index; @@ -271,41 +309,3 @@ int acpi_get_gpio_by_index(struct device *dev, int index, return lookup.gpio; } EXPORT_SYMBOL_GPL(acpi_get_gpio_by_index); - -/** - * acpi_gpiochip_free_interrupts() - Free GPIO _EVT ACPI event interrupts. - * @chip: gpio chip - * - * Free interrupts associated with the _EVT method for the given GPIO chip. - * - * The remaining ACPI event interrupts associated with the chip are freed - * automatically. - */ -void acpi_gpiochip_free_interrupts(struct gpio_chip *chip) -{ - acpi_handle handle; - acpi_status status; - struct list_head *evt_pins; - struct acpi_gpio_evt_pin *evt_pin, *ep; - - if (!chip->dev || !chip->to_irq) - return; - - handle = ACPI_HANDLE(chip->dev); - if (!handle) - return; - - status = acpi_get_data(handle, acpi_gpio_evt_dh, (void **)&evt_pins); - if (ACPI_FAILURE(status)) - return; - - list_for_each_entry_safe_reverse(evt_pin, ep, evt_pins, node) { - devm_free_irq(chip->dev, evt_pin->irq, evt_pin); - list_del(&evt_pin->node); - kfree(evt_pin); - } - - acpi_detach_data(handle, acpi_gpio_evt_dh); - kfree(evt_pins); -} -EXPORT_SYMBOL(acpi_gpiochip_free_interrupts); |
