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Date:   Fri, 16 Jun 2023 21:35:48 -0700
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Subject: Re: [PATCH] net: phy: mediatek: fix compile-test dependencies
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To:     Arnd Bergmann <arnd@kernel.org>, Andrew Lunn <andrew@lunn.ch>,
        Heiner Kallweit <hkallweit1@gmail.com>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        Russell King <linux@armlinux.org.uk>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        =?UTF-8?Q?Ram=c3=b3n_Nordin_Rodriguez?= 
        <ramon.nordin.rodriguez@ferroamp.se>,
        Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>,
        Frank Sae <Frank.Sae@motor-comm.com>,
        Michael Walle <michael@walle.cc>,
        Daniel Golle <daniel@makrotopia.org>,
        Piergiorgio Beruto <piergiorgio.beruto@gmail.com>,
        Vladimir Oltean <vladimir.oltean@nxp.com>,
        Jonathan Lemon <jonathan.lemon@gmail.com>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org
References: <20230616093009.3511692-1-arnd@kernel.org>
From:   Randy Dunlap <rdunlap@infradead.org>
In-Reply-To: <20230616093009.3511692-1-arnd@kernel.org>
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On 6/16/23 02:29, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The new phy driver attempts to select a driver from another subsystem,
> but that fails when the NVMEM subsystem is disabled:
> 
> WARNING: unmet direct dependencies detected for NVMEM_MTK_EFUSE
>   Depends on [n]: NVMEM [=n] && (ARCH_MEDIATEK [=n] || COMPILE_TEST [=y]) && HAS_IOMEM [=y]
>   Selected by [y]:
>   - MEDIATEK_GE_SOC_PHY [=y] && NETDEVICES [=y] && PHYLIB [=y] && (ARM64 && ARCH_MEDIATEK [=n] || COMPILE_TEST [=y])
> 
> I could not see an actual compile time dependency, so presumably this
> is only needed for for working correctly but not technically a dependency
> on that particular nvmem driver implementation, so it would likely
> be safe to remove the select for compile testing.
> 
> To keep the spirit of the original 'select', just replace this with a
> 'depends on' that ensures that the driver will work but does not get in
> the way of build testing.
> 
> Fixes: 98c485eaf509b ("net: phy: add driver for MediaTek SoC built-in GE PHYs")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested

Thanks.

> ---
>  drivers/net/phy/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
> index a40269c175974..78e6981650d94 100644
> --- a/drivers/net/phy/Kconfig
> +++ b/drivers/net/phy/Kconfig
> @@ -239,7 +239,7 @@ config MEDIATEK_GE_PHY
>  config MEDIATEK_GE_SOC_PHY
>  	tristate "MediaTek SoC Ethernet PHYs"
>  	depends on (ARM64 && ARCH_MEDIATEK) || COMPILE_TEST
> -	select NVMEM_MTK_EFUSE
> +	depends on NVMEM_MTK_EFUSE
>  	help
>  	  Supports MediaTek SoC built-in Gigabit Ethernet PHYs.
>  

-- 
~Randy