On Wed, Jun 28, 2023 at 11:49:20AM +0200, Maxime Ripard wrote:
Hi,
This follows the discussion here: https://lore.kernel.org/linux-kselftest/20230324123157.bbwvfq4gsxnlnfwb@houa...
This shows a couple of inconsistencies with regard to how device-managed resources are cleaned up. Basically, devm resources will only be cleaned up if the device is attached to a bus and bound to a driver. Failing any of these cases, a call to device_unregister will not end up in the devm resources being released.
We had to work around it in DRM to provide helpers to create a device for kunit tests, but the current discussion around creating similar, generic, helpers for kunit resumed interest in fixing this.
This can be tested using the command: ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/base/test/
I added the fix David suggested back in that discussion which does fix the tests. The SoB is missing, since David didn't provide it back then.
Ping?
Maxime