linux-kernel - Re: [PATCH 01/10] soc: qcom: aoss: Use __cleanup() for device

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Message-ID: <l4ay27t4jbycohdsf4epxftq43kceuzymb6l2tx42lxyol3btk@vsof3bbmvrrl>
Date: Tue, 18 Nov 2025 14:52:27 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Kathiravan Thirumoorthy <kathiravan.thirumoorthy@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/10] soc: qcom: aoss: Use __cleanup() for device_node
 pointers

On Tue, Nov 18, 2025 at 01:32:51PM +0100, Krzysztof Kozlowski wrote:
> On 18/11/2025 13:25, Dmitry Baryshkov wrote:
> > On Tue, Nov 18, 2025 at 12:39:51PM +0100, Krzysztof Kozlowski wrote:
> >> On 17/11/2025 12:35, Konrad Dybcio wrote:
> >>> On 11/17/25 5:51 AM, Kathiravan Thirumoorthy wrote:
> >>>> Make use of the __cleanup() attribute for device_node pointers to simplify
> >>>> resource management and remove explicit of_node_put() calls.
> >>>>
> >>>> Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@....qualcomm.com>
> >>>> ---
> >>>
> >>> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> >>
> >> This is obviously wrong and not helpful patch.
> > 
> > Describing why it is wrong would be helpful (or having a pointer to an
> > explanation). Bear in mind people who read email archives and find this
> > very brief note.
> 
> I gave some rationale in other patches, but summarizing:
> 1. It is against cleanup.h - author did not bother to read it - which
> clearly asks for constructor with declaration. This was discussed many
> times in the list, including many bugs and explicit checkpatch warning
> (on LKML) because people don't bother to read cleanup.h.
> 
> 2. It makes simple get+put code complicated, not simpler.
> 
> 3. It grows the scope of OF reference without benefits.
> 
> 4. This driver was already reviewed and simplified so author should go
> back and think why this was left alone (would save a lot of trouble).

Thanks!

-- 
With best wishes
Dmitry