linux-kernel - Re: [PATCH v3 0/6] media: qcom: iris: encoder feature enhancements batch2

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Message-ID: <4oegbpuzqdr2v7sdi6ojyejzs4pcstctkpllhswuymh5pek77c@yyodmmropodb>
Date: Tue, 13 Jan 2026 09:01:20 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Wangao Wang <wangao.wang@....qualcomm.com>
Cc: Neil Armstrong <neil.armstrong@...aro.org>,
        Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Bryan O'Donoghue <bod@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>, quic_qiweil@...cinc.com,
        Renjiang Han <renjiang.han@....qualcomm.com>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/6] media: qcom: iris: encoder feature enhancements
 batch2

On Tue, Jan 13, 2026 at 02:29:53PM +0800, Wangao Wang wrote:
> 
> 
> On 2026/1/9 23:02, Neil Armstrong wrote:
> > 
> > With the following reverted:
> > 456c99da41cb ("media: iris: Add support for QC08C format for encoder")
> > causing this: https://pasteboard.co/t8HmeNaIFMDR.png
> > 
> > Nevertheless, the changes are functional and output are visually
> > coherent with the parameters, so:
> > Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8650-HDK
> > 
> > Thanks,
> > Neil
> 
> Thank you for helping with testing on SM8650. Did you revert commit
> 456c99da41cb because v4l2-ctl couldn’t run properly? There’s a change in
> v4l2-ctl that needs to be applied, please check.
> 
> https://lore.kernel.org/linux-media/20250918103235.4066441-1-dikshita.agarwal@oss.qualcomm.com/T/#u

If the kernel changes break userspace, then it is a regression on the
kernel side, which needs to be fixed there. You can't demand all users
to update userspace apps when performing kernel changes.

-- 
With best wishes
Dmitry