linux-kernel - Re: [PATCH v2] phy: tegra: depend on COMMON

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Message-ID: <0e52e932-e5d7-8116-710a-50956caaf87c@gmail.com>
Date:   Tue, 16 Mar 2021 18:43:33 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        linux-tegra@...r.kernel.org, Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v2] phy: tegra: depend on COMMON_CLK to fix compile tests

16.03.2021 10:55, Krzysztof Kozlowski пишет:
> From: Krzysztof Kozlowski <krzk@...nel.org>
> 
> The Tegra USB PHY driver uses Common Clock Framework thus it cannot be
> built on platforms without it (e.g. compile test on MIPS with RALINK and
> SOC_RT305X):
> 
>     /usr/bin/mips-linux-gnu-ld: drivers/usb/phy/phy-tegra-usb.o: in function `tegra_usb_phy_init':
>     phy-tegra-usb.c:(.text+0x1dd4): undefined reference to `clk_get_parent'
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> 
> ---
> 
> Changes since v1:
> 1. Depend on COMMON_CLK always, not only for compile test.
> ---
>  drivers/usb/phy/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
> index 52eebcb88c1f..7500e77a7d01 100644
> --- a/drivers/usb/phy/Kconfig
> +++ b/drivers/usb/phy/Kconfig
> @@ -163,6 +163,7 @@ config USB_MXS_PHY
>  config USB_TEGRA_PHY
>  	tristate "NVIDIA Tegra USB PHY Driver"
>  	depends on ARCH_TEGRA || COMPILE_TEST
> +	depends on COMMON_CLK
>  	select USB_COMMON
>  	select USB_PHY
>  	select USB_ULPI
> 

But if COMMON_CLK is disabled, then include/linux/clk.h provides a stub
for clk_get_parent(), meaning that MIPS has its own COMMON_CLK, no?