linux-kernel - Re: [PATCH v7 12/16] pinctrl: qcom: use generic pin function helpers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5c9f8c2e-6785-4464-b2cf-f8a6aeec42ea@kernel.org>
Date: Tue, 2 Sep 2025 17:38:24 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Andy Shevchenko <andriy.shevchenko@...el.com>
Cc: Bartosz Golaszewski <brgl@...ev.pl>,
 Linus Walleij <linus.walleij@...aro.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>,
 Alexey Klimov <alexey.klimov@...aro.org>,
 Lorenzo Bianconi <lorenzo@...nel.org>, Sean Wang <sean.wang@...nel.org>,
 Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Paul Cercueil <paul@...pouillou.net>, Kees Cook <kees@...nel.org>,
 Andy Shevchenko <andy@...nel.org>, Andrew Morton
 <akpm@...ux-foundation.org>, David Hildenbrand <david@...hat.com>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>, Vlastimil Babka
 <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>,
 Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>,
 Dong Aisheng <aisheng.dong@....com>, Fabio Estevam <festevam@...il.com>,
 Shawn Guo <shawnguo@...nel.org>, Jacky Bai <ping.bai@....com>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 NXP S32 Linux Team <s32@....com>, Sascha Hauer <s.hauer@...gutronix.de>,
 Tony Lindgren <tony@...mide.com>, Haojian Zhuang
 <haojian.zhuang@...aro.org>, Geert Uytterhoeven <geert+renesas@...der.be>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>, Danilo Krummrich <dakr@...nel.org>,
 Neil Armstrong <neil.armstrong@...aro.org>, Mark Brown <broonie@...nel.org>,
 linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, linux-mediatek@...ts.infradead.org,
 linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
 linux-hardening@...r.kernel.org, linux-mm@...ck.org, imx@...ts.linux.dev,
 linux-omap@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v7 12/16] pinctrl: qcom: use generic pin function helpers

On 02/09/2025 17:27, Andy Shevchenko wrote:
> On Tue, Sep 02, 2025 at 05:12:24PM +0200, Krzysztof Kozlowski wrote:
>> On 02/09/2025 15:15, Andy Shevchenko wrote:
>>> On Tue, Sep 02, 2025 at 01:59:21PM +0200, Bartosz Golaszewski wrote:
> 
> ...
> 
>>>> +	for (i = 0; i < soc_data->nfunctions; i++) {
>>>> +		func = &soc_data->functions[i];
>>>> +
>>>> +		ret = pinmux_generic_add_pinfunction(pctrl->pctrl, func, NULL);
>>>> +		if (ret < 0)
>>>
>>> Why not simply
>>>
>>> 		if (ret)
>>
>> Because existing code is as readable?
> 
> I don't agree on this. And Bart explained why. So, it's an API requirement
> after all.

If pinmux_generic_add_pinfunction() was returning 0 or error code, which
I assume you thought this function is doing, then your suggestion was
nitpicking and existing code would be readable. Requesting (ret) for
such case is really not helping.

If, as it turns out if you looked at the code,
pinmux_generic_add_pinfunction() returns non-error for success, your
comment was even wrong.

So either you are nitpicking which is not helpful or you are finding
fake issues which is counter productive.

Best regards,
Krzysztof