Commit 99fef587 authored Dec 03, 2018 by Andy Shevchenko Committed by Greg Kroah-Hartman Dec 06, 2018

driver core: platform: Respect return code of platform_device_register_full()

The platform_device_register_full() might return an error pointer. If we
instantiate platform device which is optional we may simplify the routine at
removal stage by simply calling platform_device_unregister(). For now it
requires to check parameter for being an error pointer in each caller.

To make users' life easier, check for an error pointer inside driver core.

Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 186bddb2

drivers/base/platform.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -234,7 +234,7 @@ struct platform_object {
		*/
		void platform_device_put(struct platform_device *pdev)
		{
		if (pdev)
		if (!IS_ERR_OR_NULL(pdev))
		put_device(&pdev->dev);
		}
		EXPORT_SYMBOL_GPL(platform_device_put);
		@@ -447,7 +447,7 @@ void platform_device_del(struct platform_device *pdev)
		{
		int i;

		if (pdev) {
		if (!IS_ERR_OR_NULL(pdev)) {
		device_remove_properties(&pdev->dev);
		device_del(&pdev->dev);