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Message-ID: <ZIxL16HWci5dd7Ah@corigine.com>
Date: Fri, 16 Jun 2023 13:47:35 +0200
From: Simon Horman <simon.horman@...igine.com>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
	Arnd Bergmann <arnd@...db.de>, Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Ramón Nordin Rodriguez <ramon.nordin.rodriguez@...roamp.se>,
	Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>,
	Frank Sae <Frank.Sae@...or-comm.com>,
	Michael Walle <michael@...le.cc>,
	Daniel Golle <daniel@...rotopia.org>,
	Piergiorgio Beruto <piergiorgio.beruto@...il.com>,
	Vladimir Oltean <vladimir.oltean@....com>,
	Jonathan Lemon <jonathan.lemon@...il.com>,
	Randy Dunlap <rdunlap@...radead.org>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] net: phy: mediatek: fix compile-test dependencies

On Fri, Jun 16, 2023 at 11:29:54AM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.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

nit: for for -> for
     or
     for for working correctly -> for correct operation

> 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@...db.de>

I don't know the answer to the question of if this dependency is needed or
not. But I do agree that it does what it says on the box.

Reviewed-by: Simon Horman <simon.horman@...igine.com>


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