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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>
This commit is contained in:
Andy Shevchenko 2018-12-03 20:21:41 +02:00 committed by Greg Kroah-Hartman
parent 186bddb28f
commit 99fef587ff
1 changed files with 2 additions and 2 deletions
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4
drivers/base/platform.c
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@ -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);