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Received: from SJ2PR12MB8784.namprd12.prod.outlook.com (2603:10b6:a03:4d0::11) by PH7PR12MB8179.namprd12.prod.outlook.com (2603:10b6:510:2b8::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9366.11; Wed, 26 Nov 2025 14:51:42 +0000 Received: from SJ2PR12MB8784.namprd12.prod.outlook.com ([fe80::1660:3173:eef6:6cd9]) by SJ2PR12MB8784.namprd12.prod.outlook.com ([fe80::1660:3173:eef6:6cd9%7]) with mapi id 15.20.9343.016; Wed, 26 Nov 2025 14:51:42 +0000 Message-ID: <705186a9-a9db-46f0-bf2b-b499def050dd@nvidia.com> Date: Wed, 26 Nov 2025 14:51:33 +0000 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 07/10] arm64: select HAVE_SHARED_GPIOS for ARCH_QCOM To: Bartosz Golaszewski Cc: Kees Cook , Mika Westerberg , Dmitry Torokhov , Andrew Morton , Linus Walleij , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Saravana Kannan , Greg Kroah-Hartman , Andy Shevchenko , Catalin Marinas , Will Deacon , Srinivas Kandagatla , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Alexey Klimov , Bjorn Andersson , Konrad Dybcio , linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sound@vger.kernel.org, linux-arm-msm@vger.kernel.org, Bartosz Golaszewski , "linux-tegra@vger.kernel.org" References: <20251112-gpio-shared-v4-0-b51f97b1abd8@linaro.org> <20251112-gpio-shared-v4-7-b51f97b1abd8@linaro.org> <0829a21c-f97d-41b6-90bc-2acaec42caab@nvidia.com> Content-Language: en-US From: Jon Hunter In-Reply-To: Content-Type: text/plain; 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Enable support for them by >>> selecting the Kconfig switch provided by GPIOLIB. >>> >>> Acked-by: Linus Walleij >>> Signed-off-by: Bartosz Golaszewski >>> --- >>> 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? Yes looks like it does and I see ... [ 0.123356] OF: /__symbols__: could not find phandle 794981747 [ 0.123401] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.18.0-rc7-next-20251126-00002-g1cd98992c487-dirty #19 PREEMPT [ 0.123418] Hardware name: NVIDIA Jetson AGX Xavier Developer Kit (DT) [ 0.123447] Call trace: [ 0.123453] show_stack+0x18/0x24 (C) [ 0.123472] dump_stack_lvl+0x74/0x8c [ 0.123487] dump_stack+0x18/0x24 [ 0.123518] of_phandle_iterator_next+0x18c/0x1c4 [ 0.123536] of_count_phandle_with_args+0xa0/0xc8 [ 0.123551] gpio_shared_of_traverse+0xb8/0x47c [ 0.123566] gpio_shared_of_traverse+0x158/0x47c [ 0.123578] gpio_shared_init+0x110/0x1f0 [ 0.123595] do_one_initcall+0x7c/0x1c0 [ 0.123607] kernel_init_freeable+0x204/0x2e0 [ 0.123622] kernel_init+0x20/0x1d8 [ 0.123637] ret_from_fork+0x10/0x20 Thanks Jon -- nvpublic