On 20/04/2022 14:10, Arnd Bergmann wrote:
On Wed, Apr 20, 2022 at 1:55 PM Krzysztof Kozlowski krzysztof.kozlowski@linaro.org wrote:
The Samsung pinctrl drivers depend on OF_GPIO, which is part of GPIOLIB. ARMv7 Exynos platform selects GPIOLIB and Samsung pinctrl drivers. ARMv8 Exynos selects only the latter leading to possible wrong configuration on ARMv8 build:
WARNING: unmet direct dependencies detected for PINCTRL_EXYNOS Depends on [n]: PINCTRL [=y] && OF_GPIO [=n] && (ARCH_EXYNOS [=y] || ARCH_S5PV210 || COMPILE_TEST [=y]) Selected by [y]: - ARCH_EXYNOS [=y]
Reported-by: Necip Fazil Yildiran fazilyildiran@gmail.com Fixes: eed6b3eb20b9 ("arm64: Split out platform options to separate Kconfig") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org
This does not look like a correct fix:
diff --git a/drivers/pinctrl/samsung/Kconfig b/drivers/pinctrl/samsung/Kconfig index dfd805e76862..c852fd1dd284 100644 --- a/drivers/pinctrl/samsung/Kconfig +++ b/drivers/pinctrl/samsung/Kconfig @@ -4,13 +4,13 @@ # config PINCTRL_SAMSUNG bool
depends on OF_GPIO
select GPIOLIBselect OF_GPIO select PINMUX select PINCONFOF_GPIO is an automatic symbol that is always enabled when both GPIOLIB and OF are enabled. Selecting it from somewhere else cannot really work at all. I see we have a few other instances and should probably fix those as well.
True, OF_GPIO I could skip here.
config PINCTRL_EXYNOS bool "Pinctrl common driver part for Samsung Exynos SoCs"
depends on OF_GPIO depends on ARCH_EXYNOS || ARCH_S5PV210 || COMPILE_TEST select PINCTRL_SAMSUNG select PINCTRL_EXYNOS_ARM if ARM && (ARCH_EXYNOS || ARCH_S5PV210)The problem here is that PINCTRL_EXYNOS and the others can be built for compile-testing without CONFIG_OF on non-arm machines.
I think the correct dependency line would be
depends on ARCH_EXYNOS || ARCH_S5PV210 || (COMPILE_TEST && OF)which guarantees that OF_GPIO is also enabled.
I don't think OF is the problem here, because the error is in missing GPIOLIB. The platform selects Samsung pinctrl but it does not select GPIOLIB. Possible fixes are: 1. Do not select Samsung pinctrl from the platform (but have some default), so on compile test build it might not work. 2. Select GPIOLIB from the platform (ARMv7 Exynos does it). 3. Select GPIOLIB from here - this is current proposal.
Best regards, Krzysztof