extcon: gpio: Use devm_extcon_dev_register()

Use the resource-managed extcon device register function (i.e.
devm_extcon_dev_register()) instead of extcon_dev_register(). If extcon device
is attached with this function, that extcon device is automatically unregistered
on driver detach. That reduces tiresome managing code.

Signed-off-by: Sangjung Woo <sangjung.woo@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

1 files changed, 4 insertions, 12 deletions

diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 13d522255d81..43af34c4a518 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -121,34 +121,27 @@ static int gpio_extcon_probe(struct platform_device *pdev)
                                 msecs_to_jiffies(pdata->debounce);
         }
 
-        ret = extcon_dev_register(&extcon_data->edev);
+        ret = devm_extcon_dev_register(&pdev->dev, &extcon_data->edev);
         if (ret < 0)
                 return ret;
 
         INIT_DELAYED_WORK(&extcon_data->work, gpio_extcon_work);
 
         extcon_data->irq = gpio_to_irq(extcon_data->gpio);
-        if (extcon_data->irq < 0) {
-                ret = extcon_data->irq;
-                goto err;
-        }
+        if (extcon_data->irq < 0)
+                return extcon_data->irq;
 
         ret = request_any_context_irq(extcon_data->irq, gpio_irq_handler,
                                       pdata->irq_flags, pdev->name,
                                       extcon_data);
         if (ret < 0)
-                goto err;
+                return ret;
 
         platform_set_drvdata(pdev, extcon_data);
         /* Perform initial detection */
         gpio_extcon_work(&extcon_data->work.work);
 
         return 0;
-
-err:
-        extcon_dev_unregister(&extcon_data->edev);
-
-        return ret;
 }
 
 static int gpio_extcon_remove(struct platform_device *pdev)
@@ -157,7 +150,6 @@ static int gpio_extcon_remove(struct platform_device *pdev)
 
         cancel_delayed_work_sync(&extcon_data->work);
         free_irq(extcon_data->irq, extcon_data);
-        extcon_dev_unregister(&extcon_data->edev);
 
         return 0;
 }