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authorWilliam Breathitt Gray <vilhelm.gray@gmail.com>2017-01-24 23:00:43 +0300
committerLinus Walleij <linus.walleij@linaro.org>2017-01-26 17:53:24 +0300
commite43fee60344ae4b64cfb4ddeb5355c86606681fa (patch)
treea6d69a4f0aea19b7961a985c5f82ffee03a2ab5c /drivers/gpio
parent00de1a518aebed3bcf44389cd5dae12a77ade726 (diff)
downloadlinux-e43fee60344ae4b64cfb4ddeb5355c86606681fa.tar.xz
gpio: 104-idi-48: 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 idi_48_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-104-idi-48.c28
1 files changed, 5 insertions, 23 deletions
diff --git a/drivers/gpio/gpio-104-idi-48.c b/drivers/gpio/gpio-104-idi-48.c
index 2d2763ea1a68..eafbf053f3e8 100644
--- a/drivers/gpio/gpio-104-idi-48.c
+++ b/drivers/gpio/gpio-104-idi-48.c
@@ -47,7 +47,6 @@ MODULE_PARM_DESC(irq, "ACCES 104-IDI-48 interrupt line numbers");
* @ack_lock: synchronization lock to prevent IRQ handler race conditions
* @irq_mask: input bits affected by interrupts
* @base: base port address of the GPIO device
- * @irq: Interrupt line number
* @cos_enb: Change-Of-State IRQ enable boundaries mask
*/
struct idi_48_gpio {
@@ -56,7 +55,6 @@ struct idi_48_gpio {
spinlock_t ack_lock;
unsigned char irq_mask[6];
unsigned base;
- unsigned irq;
unsigned char cos_enb;
};
@@ -244,14 +242,13 @@ static int idi_48_probe(struct device *dev, unsigned int id)
idi48gpio->chip.direction_input = idi_48_gpio_direction_input;
idi48gpio->chip.get = idi_48_gpio_get;
idi48gpio->base = base[id];
- idi48gpio->irq = irq[id];
spin_lock_init(&idi48gpio->lock);
spin_lock_init(&idi48gpio->ack_lock);
dev_set_drvdata(dev, idi48gpio);
- err = gpiochip_add_data(&idi48gpio->chip, idi48gpio);
+ err = devm_gpiochip_add_data(dev, &idi48gpio->chip, idi48gpio);
if (err) {
dev_err(dev, "GPIO registering failed (%d)\n", err);
return err;
@@ -265,31 +262,17 @@ static int idi_48_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], idi_48_irq_handler, IRQF_SHARED, name,
- idi48gpio);
+ err = devm_request_irq(dev, irq[id], idi_48_irq_handler, IRQF_SHARED,
+ name, idi48gpio);
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(&idi48gpio->chip);
- return err;
-}
-
-static int idi_48_remove(struct device *dev, unsigned int id)
-{
- struct idi_48_gpio *const idi48gpio = dev_get_drvdata(dev);
-
- free_irq(idi48gpio->irq, idi48gpio);
- gpiochip_remove(&idi48gpio->chip);
-
- return 0;
}
static struct isa_driver idi_48_driver = {
@@ -297,7 +280,6 @@ static struct isa_driver idi_48_driver = {
.driver = {
.name = "104-idi-48"
},
- .remove = idi_48_remove
};
module_isa_driver(idi_48_driver, num_idi_48);