linux-kernel - Re: [PATCH AUTOSEL 6.11 08/15] drm: display: Set fwnode for aux bus devices

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Message-ID: <Z1hobuvz2S03L9TF@sashalap>
Date: Tue, 10 Dec 2024 11:12:30 -0500
From: Sasha Levin <sashal@...nel.org>
To: Saravana Kannan <saravanak@...gle.com>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Nícolas F . R . A . Prado <nfraprado@...labora.com>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Thierry Reding <treding@...dia.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
	tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
	matthias.bgg@...il.com, elder@...nel.org, ricardo@...liere.net,
	sumit.garg@...aro.org, dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH AUTOSEL 6.11 08/15] drm: display: Set fwnode for aux bus
 devices

On Thu, Dec 05, 2024 at 04:07:45PM -0800, Saravana Kannan wrote:
>On Thu, Dec 5, 2024 at 4:06 PM Saravana Kannan <saravanak@...gle.com> wrote:
>>
>> On Wed, Dec 4, 2024 at 3:29 PM Sasha Levin <sashal@...nel.org> wrote:
>> >
>> > From: Saravana Kannan <saravanak@...gle.com>
>> >
>> > [ Upstream commit fe2e59aa5d7077c5c564d55b7e2997e83710c314 ]
>> >
>> > fwnode needs to be set for a device for fw_devlink to be able to
>> > track/enforce its dependencies correctly. Without this, you'll see error
>> > messages like this when the supplier has probed and tries to make sure
>> > all its fwnode consumers are linked to it using device links:
>> >
>> > mediatek-drm-dp 1c500000.edp-tx: Failed to create device link (0x180) with backlight-lcd0
>> >
>> > Reported-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
>> > Closes: https://lore.kernel.org/all/7b995947-4540-4b17-872e-e107adca4598@notapiano/
>> > Tested-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
>> > Signed-off-by: Saravana Kannan <saravanak@...gle.com>
>> > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>> > Reviewed-by: Thierry Reding <treding@...dia.com>
>> > Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>> > Link: https://lore.kernel.org/r/20241024061347.1771063-2-saravanak@google.com
>> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>> > Signed-off-by: Sasha Levin <sashal@...nel.org>
>>
>> As mentioned in the original cover letter:
>>
>> PSA: Do not pull any of these patches into stable kernels. fw_devlink
>> had a lot of changes that landed in the last year. It's hard to ensure
>> cherry-picks have picked up all the dependencies correctly. If any of
>> these really need to get cherry-picked into stable kernels, cc me and
>> wait for my explicit Ack.
>>
>> Is there a pressing need for this in 4.19?
>
>I copy pasted this into several replies. In all those cases I meant
>the kernel version mentioned in the subject.

I'll drop this and the other patch you've pointed out, thanks!

-- 
Thanks,
Sasha