diff options
author | William Breathitt Gray <vilhelm.gray@gmail.com> | 2017-01-24 23:01:15 +0300 |
---|---|---|
committer | Linus Walleij <linus.walleij@linaro.org> | 2017-01-26 17:56:30 +0300 |
commit | b4cad1bc5ff63881b92a0fe9683723b4379d8c40 (patch) | |
tree | 086b3ee698cc44a24fe4836c39dc3b0ae0e4361d /drivers/gpio | |
parent | 2141b0a1d718d5f75b581530ef4f9641c7c4284c (diff) | |
download | linux-b4cad1bc5ff63881b92a0fe9683723b4379d8c40.tar.xz |
gpio: ws16c48: Utilize devm_ functions in driver probe callback
The devm_ resource manager functions allow memory to be automatically
released when a device is unbound. This patch takes advantage of the
resource manager functions and replaces the gpiochip_add_data call and
request_irq call with the devm_gpiochip_add_data call and
devm_request_irq call respectively. In addition, the ws16c48_remove
function has been removed as no longer necessary due to the use of the
relevant devm_ resource manager functions.
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/gpio-ws16c48.c | 28 |
1 files changed, 5 insertions, 23 deletions
diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c index 25e539530c08..65de20dfbe7a 100644 --- a/drivers/gpio/gpio-ws16c48.c +++ b/drivers/gpio/gpio-ws16c48.c @@ -46,7 +46,6 @@ MODULE_PARM_DESC(irq, "WinSystems WS16C48 interrupt line numbers"); * @irq_mask: I/O bits affected by interrupts * @flow_mask: IRQ flow type mask for the respective I/O bits * @base: base port address of the GPIO device - * @irq: Interrupt line number */ struct ws16c48_gpio { struct gpio_chip chip; @@ -56,7 +55,6 @@ struct ws16c48_gpio { unsigned long irq_mask; unsigned long flow_mask; unsigned base; - unsigned irq; }; static int ws16c48_gpio_get_direction(struct gpio_chip *chip, unsigned offset) @@ -371,13 +369,12 @@ static int ws16c48_probe(struct device *dev, unsigned int id) ws16c48gpio->chip.set = ws16c48_gpio_set; ws16c48gpio->chip.set_multiple = ws16c48_gpio_set_multiple; ws16c48gpio->base = base[id]; - ws16c48gpio->irq = irq[id]; spin_lock_init(&ws16c48gpio->lock); dev_set_drvdata(dev, ws16c48gpio); - err = gpiochip_add_data(&ws16c48gpio->chip, ws16c48gpio); + err = devm_gpiochip_add_data(dev, &ws16c48gpio->chip, ws16c48gpio); if (err) { dev_err(dev, "GPIO registering failed (%d)\n", err); return err; @@ -394,31 +391,17 @@ static int ws16c48_probe(struct device *dev, unsigned int id) handle_edge_irq, IRQ_TYPE_NONE); if (err) { dev_err(dev, "Could not add irqchip (%d)\n", err); - goto err_gpiochip_remove; + return err; } - err = request_irq(irq[id], ws16c48_irq_handler, IRQF_SHARED, name, - ws16c48gpio); + err = devm_request_irq(dev, irq[id], ws16c48_irq_handler, IRQF_SHARED, + name, ws16c48gpio); if (err) { dev_err(dev, "IRQ handler registering failed (%d)\n", err); - goto err_gpiochip_remove; + return err; } return 0; - -err_gpiochip_remove: - gpiochip_remove(&ws16c48gpio->chip); - return err; -} - -static int ws16c48_remove(struct device *dev, unsigned int id) -{ - struct ws16c48_gpio *const ws16c48gpio = dev_get_drvdata(dev); - - free_irq(ws16c48gpio->irq, ws16c48gpio); - gpiochip_remove(&ws16c48gpio->chip); - - return 0; } static struct isa_driver ws16c48_driver = { @@ -426,7 +409,6 @@ static struct isa_driver ws16c48_driver = { .driver = { .name = "ws16c48" }, - .remove = ws16c48_remove }; module_isa_driver(ws16c48_driver, num_ws16c48); |