leds: wm831x-status: Use devm_led_classdev_register

Switch to resource-managed function devm_led_classdev_register instead
of led_classdev_register and remove unneeded led_classdev_unregister.

Also, remove platform_set_drvdata from probe function and the remove
function, wm831x_status_remove as it is now has nothing to do.

The Coccinelle semantic patch used to make this change is as follows:
//<smpl>
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
  .probe = probefn,
  .remove = removefn,
};

@prb@
identifier platform.probefn, pdev;
expression e;
@@
probefn(struct platform_device *pdev, ...) {
  ...
  e =
- led_classdev_register
+ devm_led_classdev_register
  (...);
   ...
?- led_classdev_unregister(...);
  ...
}
@remove depends on prb@
identifier platform.removefn;
@@
removefn(...) {
...
?- led_classdev_unregister(...);
...
}
//</smpl>

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

1 files changed, 1 insertions, 12 deletions

diff --git a/drivers/leds/leds-wm831x-status.c b/drivers/leds/leds-wm831x-status.c
index 64a22263e7fc..be93b20e792a 100644
--- a/drivers/leds/leds-wm831x-status.c
+++ b/drivers/leds/leds-wm831x-status.c
@@ -239,7 +239,6 @@ static int wm831x_status_probe(struct platform_device *pdev)
                                GFP_KERNEL);
         if (!drvdata)
                 return -ENOMEM;
-        platform_set_drvdata(pdev, drvdata);
 
         drvdata->wm831x = wm831x;
         drvdata->reg = res->start;
@@ -284,7 +283,7 @@ static int wm831x_status_probe(struct platform_device *pdev)
         drvdata->cdev.blink_set = wm831x_status_blink_set;
         drvdata->cdev.groups = wm831x_status_groups;
 
-        ret = led_classdev_register(wm831x->dev, &drvdata->cdev);
+        ret = devm_led_classdev_register(wm831x->dev, &drvdata->cdev);
         if (ret < 0) {
                 dev_err(&pdev->dev, "Failed to register LED: %d\n", ret);
                 return ret;
@@ -293,21 +292,11 @@ static int wm831x_status_probe(struct platform_device *pdev)
         return 0;
 }
 
-static int wm831x_status_remove(struct platform_device *pdev)
-{
-        struct wm831x_status *drvdata = platform_get_drvdata(pdev);
-
-        led_classdev_unregister(&drvdata->cdev);
-
-        return 0;
-}
-
 static struct platform_driver wm831x_status_driver = {
         .driver = {
                    .name = "wm831x-status",
                    },
         .probe = wm831x_status_probe,
-        .remove = wm831x_status_remove,
 };
 
 module_platform_driver(wm831x_status_driver);