linux-kernel - Re: [PATCH v2] phy: mediatek: Make PHY_MTK_{XSPHY,TPHY} depend on HAS_IOMEM and OF

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Message-ID: <1606456694.7284.13.camel@mhfsdcap03>
Date:   Fri, 27 Nov 2020 13:58:14 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Tiezhu Yang <yangtiezhu@...ngson.cn>
CC:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Heiko Stuebner <heiko@...ech.de>,
        "Randy Dunlap" <rdunlap@...radead.org>,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH v2] phy: mediatek: Make PHY_MTK_{XSPHY,TPHY} depend on
 HAS_IOMEM and OF_ADDRESS to fix build errors

On Wed, 2020-11-25 at 15:37 +0800, Tiezhu Yang wrote:
> devm_ioremap_resource() will be not built in lib/devres.c if
> CONFIG_HAS_IOMEM is not set, of_address_to_resource() will be
> not built in drivers/of/address.c if CONFIG_OF_ADDRESS is not
> set, and then there exists two build errors about undefined
> reference to "devm_ioremap_resource" and "of_address_to_resource"
> in phy-mtk-xsphy.c under COMPILE_TEST and CONFIG_PHY_MTK_XSPHY,
> make PHY_MTK_XSPHY depend on HAS_IOMEM and OF_ADDRESS to fix it.
> 
> The above issue is reported by kernel test robot <lkp@...el.com>,
> through the discussion in the v1 patch, as Chunfeng said we need
> also do this for config PHY_MTK_TPHY:
> 
> drivers/phy/mediatek/phy-mtk-tphy.c:1157:		retval = of_address_to_resource(child_np, 0, &res);
> drivers/phy/mediatek/phy-mtk-tphy.c:1123:		tphy->sif_base = devm_ioremap_resource(dev, sif_res);
> drivers/phy/mediatek/phy-mtk-tphy.c:1164:		instance->port_base = devm_ioremap_resource(&phy->dev, &res);
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
> Acked-by: Randy Dunlap <rdunlap@...radead.org>
> ---
The changes in v2 should be described after '---'

Except that, it looks good to me,
Acked-by: Chunfeng Yun <chunfeng.yun@...iatek.com>

Thanks a lot

>  drivers/phy/mediatek/Kconfig | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/phy/mediatek/Kconfig b/drivers/phy/mediatek/Kconfig
> index 50c5e93..f44800b 100644
> --- a/drivers/phy/mediatek/Kconfig
> +++ b/drivers/phy/mediatek/Kconfig
> @@ -5,7 +5,8 @@
>  config PHY_MTK_TPHY
>  	tristate "MediaTek T-PHY Driver"
>  	depends on ARCH_MEDIATEK || COMPILE_TEST
> -	depends on OF
> +	depends on OF && OF_ADDRESS
> +	depends on HAS_IOMEM
>  	select GENERIC_PHY
>  	help
>  	  Say 'Y' here to add support for MediaTek T-PHY driver,
> @@ -29,7 +30,8 @@ config PHY_MTK_UFS
>  config PHY_MTK_XSPHY
>  	tristate "MediaTek XS-PHY Driver"
>  	depends on ARCH_MEDIATEK || COMPILE_TEST
> -	depends on OF
> +	depends on OF && OF_ADDRESS
> +	depends on HAS_IOMEM
>  	select GENERIC_PHY
>  	help
>  	  Enable this to support the SuperSpeedPlus XS-PHY transceiver for