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authorWilliam Breathitt Gray <vilhelm.gray@gmail.com>2017-01-24 23:00:54 +0300
committerLinus Walleij <linus.walleij@linaro.org>2017-01-26 17:54:28 +0300
commit837143d356fd066ed6fb0a3a91700d66a7916841 (patch)
tree7a2a14a729c1c818415109b2b89ebb73e36b4e3a /drivers/gpio/gpio-104-idio-16.c
parente43fee60344ae4b64cfb4ddeb5355c86606681fa (diff)
downloadlinux-837143d356fd066ed6fb0a3a91700d66a7916841.tar.xz
gpio: 104-idio-16: 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 idio_16_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/gpio-104-idio-16.c')
-rw-r--r--drivers/gpio/gpio-104-idio-16.c27
1 files changed, 5 insertions, 22 deletions
diff --git a/drivers/gpio/gpio-104-idio-16.c b/drivers/gpio/gpio-104-idio-16.c
index a57900fd0dc7..01a091e17614 100644
--- a/drivers/gpio/gpio-104-idio-16.c
+++ b/drivers/gpio/gpio-104-idio-16.c
@@ -46,7 +46,6 @@ MODULE_PARM_DESC(irq, "ACCES 104-IDIO-16 interrupt line numbers");
* @lock: synchronization lock to prevent I/O race conditions
* @irq_mask: I/O bits affected by interrupts
* @base: base port address of the GPIO device
- * @irq: Interrupt line number
* @out_state: output bits state
*/
struct idio_16_gpio {
@@ -54,7 +53,6 @@ struct idio_16_gpio {
spinlock_t lock;
unsigned long irq_mask;
unsigned base;
- unsigned irq;
unsigned out_state;
};
@@ -240,14 +238,13 @@ static int idio_16_probe(struct device *dev, unsigned int id)
idio16gpio->chip.set = idio_16_gpio_set;
idio16gpio->chip.set_multiple = idio_16_gpio_set_multiple;
idio16gpio->base = base[id];
- idio16gpio->irq = irq[id];
idio16gpio->out_state = 0xFFFF;
spin_lock_init(&idio16gpio->lock);
dev_set_drvdata(dev, idio16gpio);
- err = gpiochip_add_data(&idio16gpio->chip, idio16gpio);
+ err = devm_gpiochip_add_data(dev, &idio16gpio->chip, idio16gpio);
if (err) {
dev_err(dev, "GPIO registering failed (%d)\n", err);
return err;
@@ -261,30 +258,17 @@ static int idio_16_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], idio_16_irq_handler, 0, name, idio16gpio);
+ err = devm_request_irq(dev, irq[id], idio_16_irq_handler, 0, name,
+ idio16gpio);
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(&idio16gpio->chip);
- return err;
-}
-
-static int idio_16_remove(struct device *dev, unsigned int id)
-{
- struct idio_16_gpio *const idio16gpio = dev_get_drvdata(dev);
-
- free_irq(idio16gpio->irq, idio16gpio);
- gpiochip_remove(&idio16gpio->chip);
-
- return 0;
}
static struct isa_driver idio_16_driver = {
@@ -292,7 +276,6 @@ static struct isa_driver idio_16_driver = {
.driver = {
.name = "104-idio-16"
},
- .remove = idio_16_remove
};
module_isa_driver(idio_16_driver, num_idio_16);