Commit 67e532a4 authored Dec 22, 2021 by Johan Hovold Committed by Greg Kroah-Hartman Dec 22, 2021

driver core: platform: document registration-failure requirement



Add an explicit comment to document that the reference initialised by
platform_device_register() needs to be released by a call to
platform_device_put() also when registration fails (cf.
device_register()).

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211222104213.5673-1-johan@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 45e3a279

drivers/base/platform.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -763,6 +763,10 @@ EXPORT_SYMBOL_GPL(platform_device_del);
		/**
		* platform_device_register - add a platform-level device
		* @pdev: platform device we're adding
		*
		* NOTE: _Never_ directly free @pdev after calling this function, even if it
		* returned an error! Always use platform_device_put() to give up the
		* reference initialised in this function instead.
		*/
		int platform_device_register(struct platform_device *pdev)
		{