Re: [PATCH v6] backlight: led-backlight: add devlink to supplier LEDs

["Luca Ceresoli" <luca.ceresoli@bootlin.com>]

Hello,

On Wed Oct 29, 2025 at 6:45 PM CET, Daniel Thompson wrote:
> On Thu, Oct 23, 2025 at 12:41:30PM +0000, Sverdlin, Alexander wrote:
>> Hi Lee, Daniel, Jingoo,
>>
>> On Mon, 2025-05-19 at 22:19 +0200, Luca Ceresoli wrote:
>> > led-backlight is a consumer of one or multiple LED class devices, but
>> > devlink is currently unable to create correct supplier-producer links when
>> > the supplier is a class device. It creates instead a link where the
>> > supplier is the parent of the expected device.
>> > <snip>
>> > Fixes: ae232e45acf9 ("backlight: add led-backlight driver")
>> > Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
>> > Reviewed-by: Herve Codina <herve.codina@bootlin.com>
>>
>> I've noticed that the patch in archived in the patchwork [1] but I wasn't
>> able to find it in any branch of the backlight tree [2].
>>
>> Could it be that the patch somehow slipped through?
>> It does solve a real-world crash, could you please consider to apply it?
>
> Sorry folks. I overlooked this in my backlog and never posted the R-b
> (which helps Lee figure out what to hoover up).
>
> Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org>

Thanks Alexander for pinging and Daniel for reviewing!

I double checked right now and can confirm:

 * the bug is still present on v6.18-rc3
 * the patch applies cleanly on v6.18-rc3
 * the patch is still fixing the bug

Best regards,
Luca

--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com