linux-kernel - Re: [PATCH v3 1/3] ALSA: hda/tegra: Fix Tegra194 HDA reset failure

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Date:   Thu, 23 Dec 2021 08:16:15 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Sameer Pujar <spujar@...dia.com>
Cc:     Dmitry Osipenko <digetx@...il.com>, tiwai@...e.com,
        broonie@...nel.org, lgirdwood@...il.com, robh+dt@...nel.org,
        thierry.reding@...il.com, perex@...ex.cz, jonathanh@...dia.com,
        mkumard@...dia.com, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v3 1/3] ALSA: hda/tegra: Fix Tegra194 HDA reset failure

On Thu, Dec 23, 2021 at 10:04:19AM +0530, Sameer Pujar wrote:
> 
> 
> On 12/23/2021 12:10 AM, Dmitry Osipenko wrote:
> > 22.12.2021 07:35, Sameer Pujar пишет:
> > > HDA regression is recently reported on Tegra194 based platforms.
> > > This happens because "hda2codec_2x" reset does not really exist
> > > in Tegra194 and it causes probe failure. All the HDA based audio
> > > tests fail at the moment. This underlying issue is exposed by
> > > commit c045ceb5a145 ("reset: tegra-bpmp: Handle errors in BPMP
> > > response") which now checks return code of BPMP command response.
> > > Fix this issue by skipping unavailable reset on Tegra194.
> > > 
> > > Signed-off-by: Sameer Pujar <spujar@...dia.com>
> > > Cc: stable@...r.kernel.org
> > > Depends-on: 87f0e46e7559 ("ALSA: hda/tegra: Reset hardware")
> > Is "Depends-on" a valid tag? I can't find it in Documentation/.
> 
> I do find the usage of the tag in many commits though there is no reference
> of this in doc. I always thought it would act as a reference when commits
> get pulled to other branches. If this is not true and it does not mean
> anything, I will drop this.

It is not true at all, please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.