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

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Message-ID: <CAMRc=MerzKQTSj6PXeiWDA4qfNou8ApKYLgJhUGLP0QBatqtVQ@mail.gmail.com>
Date: Wed, 26 Nov 2025 07:05:27 -0800
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>, Bartosz Golaszewski <brgl@...ev.pl>
Subject: Re: [PATCH v4 07/10] arm64: select HAVE_SHARED_GPIOS for ARCH_QCOM

On Wed, 26 Nov 2025 15:55:54 +0100, Jon Hunter <jonathanh@...dia.com> said:
>
>> Is the device-tree used here upstream? Can you enable DEBUG_GPIO in
>> Kconfig and post the entire kernel log on pastebin?
>
> Yes this is the upstream device-tree in
> arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts. OK I will get the
> entire log for review.
>

If you could also add the following:

diff --git a/drivers/gpio/gpiolib-shared.c b/drivers/gpio/gpiolib-shared.c
index 3803b5c938f99..51af7886d9f2d 100644
--- a/drivers/gpio/gpiolib-shared.c
+++ b/drivers/gpio/gpiolib-shared.c
@@ -101,6 +101,8 @@ static int gpio_shared_of_traverse(struct device_node *curr)
 		    strcmp(prop->name, "gpio") != 0)
 			continue;

+		printk("%s: %pOF %s\n", __func__, curr, prop->name);
+
 		count = of_count_phandle_with_args(curr, prop->name,
 						   "#gpio-cells");
 		if (count <= 0)

That would help me.

Bart