Revert driver core: fix passing platform_data

This reverts commit ce21c7bc:
	We will remove platform_data field from struct device until
	all platform devices pass its specific data from platfom_device
	and all platform drivers use platform specific data passed by
	platform_device->platform_data. This kind of conversion will
	need a long time, for thousands of files is affected.

	To make the conversion easily, we allow platform specific data
	passed by struct device or struct platform_device and platform
	driver may use it from struct device or struct platform_device.

As we really don't want to do this at all.


Cc: David Brownell <david-b@pacbell.net>
Cc: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/base/platform.c

@@ -247,20 +247,7 @@ int platform_device_add(struct platform_device *pdev)
 	else
 		dev_set_name(&pdev->dev, pdev->name);
 
-	/* We will remove platform_data field from struct device
-	* if all platform devices pass its platform specific data
-	* from platform_device. The conversion is going to be a
-	* long time, so we allow the two cases coexist to make
-	* this kind of fix more easily*/
-	if (pdev->platform_data && pdev->dev.platform_data) {
-		printk(KERN_ERR
-			       "%s: use which platform_data?\n",
-			       dev_name(&pdev->dev));
-	} else if (pdev->platform_data) {
-		pdev->dev.platform_data = pdev->platform_data;
-	} else if (pdev->dev.platform_data) {
-		pdev->platform_data = pdev->dev.platform_data;
-	}
+	pdev->platform_data = pdev->dev.platform_data;
 
 	for (i = 0; i < pdev->num_resources; i++) {
 		struct resource *p, *r = &pdev->resource[i];