p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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>
This commit is contained in:
Johan Hovold 2021-12-22 11:42:13 +01:00 committed by Greg Kroah-Hartman
parent 45e3a27984
commit 67e532a42c
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/base/platform.c
View File

@ -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)
{