Re: [PATCH 0/2] drivers: base: Add tests showing devm handling inconsistencies

From: Maxime Ripard
Date: Mon Apr 17 2023 - 12:12:41 EST


Hi,

On Wed, Mar 29, 2023 at 08:38:30PM +0100, Maxime Ripard wrote:
> Hi,
>
> This follows the discussion here:
> https://lore.kernel.org/linux-kselftest/20230324123157.bbwvfq4gsxnlnfwb@houat/
>
> 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/
>
> Let me know what you think,
> Maxime
>
> Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>

Is there any news on this?

Maxime

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