extcon: gpio: Use devm_extcon_dev_allocate for extcon_dev
This patch use devm_extcon_dev_allocate() to simplify the memory control
of extcon device.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 43af34c..645b283 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -32,7 +32,7 @@
#include <linux/extcon/extcon-gpio.h>
struct gpio_extcon_data {
- struct extcon_dev edev;
+ struct extcon_dev *edev;
unsigned gpio;
bool gpio_active_low;
const char *state_on;
@@ -53,7 +53,7 @@
state = gpio_get_value(data->gpio);
if (data->gpio_active_low)
state = !state;
- extcon_set_state(&data->edev, state);
+ extcon_set_state(data->edev, state);
}
static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
@@ -67,9 +67,10 @@
static ssize_t extcon_gpio_print_state(struct extcon_dev *edev, char *buf)
{
- struct gpio_extcon_data *extcon_data =
- container_of(edev, struct gpio_extcon_data, edev);
+ struct device *dev = edev->dev.parent;
+ struct gpio_extcon_data *extcon_data = dev_get_drvdata(dev);
const char *state;
+
if (extcon_get_state(edev))
state = extcon_data->state_on;
else
@@ -98,15 +99,21 @@
if (!extcon_data)
return -ENOMEM;
- extcon_data->edev.name = pdata->name;
- extcon_data->edev.dev.parent = &pdev->dev;
+ extcon_data->edev = devm_extcon_dev_allocate(&pdev->dev, NULL);
+ if (IS_ERR(extcon_data->edev)) {
+ dev_err(&pdev->dev, "failed to allocate extcon device\n");
+ return -ENOMEM;
+ }
+ extcon_data->edev->name = pdata->name;
+ extcon_data->edev->dev.parent = &pdev->dev;
+
extcon_data->gpio = pdata->gpio;
extcon_data->gpio_active_low = pdata->gpio_active_low;
extcon_data->state_on = pdata->state_on;
extcon_data->state_off = pdata->state_off;
extcon_data->check_on_resume = pdata->check_on_resume;
if (pdata->state_on && pdata->state_off)
- extcon_data->edev.print_state = extcon_gpio_print_state;
+ extcon_data->edev->print_state = extcon_gpio_print_state;
ret = devm_gpio_request_one(&pdev->dev, extcon_data->gpio, GPIOF_DIR_IN,
pdev->name);
@@ -121,7 +128,7 @@
msecs_to_jiffies(pdata->debounce);
}
- ret = devm_extcon_dev_register(&pdev->dev, &extcon_data->edev);
+ ret = devm_extcon_dev_register(&pdev->dev, extcon_data->edev);
if (ret < 0)
return ret;