linux-kernel - Re: [PATCH v4 07/10] arm64: select HAVE_SHARED_GPIOS for ARCH

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Message-ID: <CAMRc=MdPvF+okfnRuwvAFG9UfyZ-araDsaaKMxKASEbc3rhyjQ@mail.gmail.com>
Date: Wed, 26 Nov 2025 15:28:12 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Jon Hunter <jonathanh@...dia.com>
Cc: Kees Cook <kees@...nel.org>, Mika Westerberg <westeri@...nel.org>, 
	Dmitry Torokhov <dmitry.torokhov@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, 
	Linus Walleij <linus.walleij@...aro.org>, Manivannan Sadhasivam <mani@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Saravana Kannan <saravanak@...gle.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Andy Shevchenko <andy@...nel.org>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
	Srinivas Kandagatla <srini@...nel.org>, Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
	Alexey Klimov <alexey.klimov@...aro.org>, Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konradybcio@...nel.org>, linux-hardening@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-sound@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, 
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v4 07/10] arm64: select HAVE_SHARED_GPIOS for ARCH_QCOM

On Wed, Nov 26, 2025 at 3:24 PM Jon Hunter <jonathanh@...dia.com> wrote:
>
> Hi Bartosz,
>
> On 12/11/2025 13:55, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >
> > Some qualcomm platforms use shared GPIOs. Enable support for them by
> > selecting the Kconfig switch provided by GPIOLIB.
> >
> > Acked-by: Linus Walleij <linus.walleij@...aro.org>
> > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> > ---
> >   arch/arm64/Kconfig.platforms | 1 +
> >   1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
> > index 13173795c43d4f28e2d47acc700f80a165d44671..3dbff0261f0add0516d8cb3fd0f29e277af94f20 100644
> > --- a/arch/arm64/Kconfig.platforms
> > +++ b/arch/arm64/Kconfig.platforms
> > @@ -316,6 +316,7 @@ config ARCH_QCOM
> >       select GPIOLIB
> >       select PINCTRL
> >       select HAVE_PWRCTRL if PCI
> > +     select HAVE_SHARED_GPIOS
> >       help
> >         This enables support for the ARMv8 based Qualcomm chipsets.
> >
>
> I have noticed the following kernel warning on our Tegra platforms ...
>
>   ERR KERN OF: /__symbols__: could not find phandle 794981747
>
> Bisect is pointing to this commit and reverting this does prevent it. I
> am not sure if anyone else has seen this?
>

I assume it comes from drivers/of/base.c:1295 - could you please post
a stack trace of how you're getting there?

Bart