extcon: palmas: 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>

diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 51db5bc..1a770e0 100644 (file)
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -192,7 +192,7 @@ static int palmas_usb_probe(struct platform_device *pdev)
        palmas_usb->edev.name = kstrdup(node->name, GFP_KERNEL);
        palmas_usb->edev.mutually_exclusive = mutually_exclusive;
 
-       status = extcon_dev_register(&palmas_usb->edev);
+       status = devm_extcon_dev_register(&pdev->dev, &palmas_usb->edev);
        if (status) {
                dev_err(&pdev->dev, "failed to register extcon device\n");
                kfree(palmas_usb->edev.name);
@@ -209,7 +209,8 @@ static int palmas_usb_probe(struct platform_device *pdev)
                if (status < 0) {
                        dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
                                        palmas_usb->id_irq, status);
-                       goto fail_extcon;
+                       kfree(palmas_usb->edev.name);
+                       return status;
                }
        }
 
@@ -223,26 +224,20 @@ static int palmas_usb_probe(struct platform_device *pdev)
                if (status < 0) {
                        dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
                                        palmas_usb->vbus_irq, status);
-                       goto fail_extcon;
+                       kfree(palmas_usb->edev.name);
+                       return status;
                }
        }
 
        palmas_enable_irq(palmas_usb);
        device_set_wakeup_capable(&pdev->dev, true);
        return 0;
-
-fail_extcon:
-       extcon_dev_unregister(&palmas_usb->edev);
-       kfree(palmas_usb->edev.name);
-
-       return status;
 }
 
 static int palmas_usb_remove(struct platform_device *pdev)
 {
        struct palmas_usb *palmas_usb = platform_get_drvdata(pdev);
 
-       extcon_dev_unregister(&palmas_usb->edev);
        kfree(palmas_usb->edev.name);
 
        return 0;