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Commit 60cd62d4 authored by Chanwoo Choi's avatar Chanwoo Choi
Browse files

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: default avatarChanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: default avatarFelipe Balbi <balbi@ti.com>
parent 1876fd9a

drivers/extcon/extcon-gpio.c

+15 −8
Original line number Diff line number Diff line
@@ -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 @@ static void gpio_extcon_work(struct work_struct *work) 
	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 irqreturn_t gpio_irq_handler(int irq, void *dev_id) 


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 @@ static int gpio_extcon_probe(struct platform_device *pdev) 
	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 @@ static int gpio_extcon_probe(struct platform_device *pdev) 
				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;