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

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Message-Id: <20250329164145.3194284-1-arnd@kernel.org>
Date: Sat, 29 Mar 2025 17:41:26 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Ulf Hansson <ulf.hansson@...aro.org>,
	Biju Das <biju.das.jz@...renesas.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: 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: [PATCH] [v2] mmc: renesas_sdhi: add regulator dependency

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.

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>
---
 drivers/mmc/host/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index c3a9e856053b..c9e067b5ba94 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -694,8 +694,8 @@ config MMC_TMIO_CORE
 config MMC_SDHI
 	tristate "Renesas SDHI SD/SDIO controller support"
 	depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
+	depends on (RESET_CONTROLLER && REGULATOR) || !OF
 	select MMC_TMIO_CORE
-	select RESET_CONTROLLER if ARCH_RENESAS
 	help
 	  This provides support for the SDHI SD/SDIO controller found in
 	  Renesas SuperH, ARM and ARM64 based SoCs
-- 
2.39.5