linux-kernel - Re: [PATCH] [v2] mmc: renesas_sdhi: add regulator dependency

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Message-ID: <Z-gk0TDKv28vxCCn@shikoro>
Date: Sat, 29 Mar 2025 17:50:25 +0100
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Ulf Hansson <ulf.hansson@...aro.org>,
	Biju Das <biju.das.jz@...renesas.com>,
	Arnd Bergmann <arnd@...db.de>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [v2] mmc: renesas_sdhi: add regulator dependency

On Sat, Mar 29, 2025 at 05:41:26PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The driver started using the regulator subsystem and fails to build without
> a dependeny on CONFIG_REGULATOR:
> 
> ERROR: modpost: "rdev_get_drvdata" [drivers/mmc/host/renesas_sdhi_core.ko] undefined!
> ERROR: modpost: "devm_regulator_register" [drivers/mmc/host/renesas_sdhi_core.ko] undefined!
> 
> The 'select RESET_CONTROLLER' needs to either go away or get changed to a dependency
> in order to avoid Kconfig dependency loops here. It also turns out the the superh
> version needs neither RESET_CONTROLLER nor REGULATOR, and this works because
> CONFIG_OF is not set there.
> 
> Change both to a 'depends on', but add '|| OF' for the superh case.

!OF

> Fixes: fae80a99dc03 ("mmc: renesas_sdhi: Add support for RZ/G3E SoC")
> Tested-by: Biju Das <biju.das.jz@...renesas.com>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Other than that:

Reviewed-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

Thank you!


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