linux-kernel - [RFC 2/3] ARM: sunxi: do not select COMMON

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Message-Id: <20201115170950.304460-3-krzk@kernel.org>
Date:   Sun, 15 Nov 2020 18:09:49 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-media@...r.kernel.org,
        devel@...verdev.osuosl.org, alsa-devel@...a-project.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>
Subject: [RFC 2/3] ARM: sunxi: do not select COMMON_CLK to fix builds

COMMON_CLK is a user-selectable option with its own dependencies.  The
most important dependency is !HAVE_LEGACY_CLK.  User-selectable drivers
should not select COMMON_CLK because they will create a dependency cycle
and build failures.  For example on MIPS a configuration with COMMON_CLK
(selected by SND_SUN8I_CODEC) and HAVE_LEGACY_CLK (selected by
SOC_RT305X) is possible:

  WARNING: unmet direct dependencies detected for COMMON_CLK
    Depends on [n]: !HAVE_LEGACY_CLK [=y]
    Selected by [y]:
    - SND_SUN8I_CODEC [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] &&
      (ARCH_SUNXI || COMPILE_TEST [=y]) && OF [=y] && (MACH_SUN8I || ARM64 && ARCH_SUNXI || COMPILE_TEST [=y])

    /usr/bin/mips-linux-gnu-ld: drivers/clk/clk.o: in function `clk_set_rate':
    (.text+0xaeb4): multiple definition of `clk_set_rate'; arch/mips/ralink/clk.o:(.text+0x88): first defined here

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 arch/arm/mach-sunxi/Kconfig | 1 +
 sound/soc/sunxi/Kconfig     | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index eeadb1a4dcfe..4d9f9b6d329d 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -4,6 +4,7 @@ menuconfig ARCH_SUNXI
 	depends on ARCH_MULTI_V5 || ARCH_MULTI_V7
 	select ARCH_HAS_RESET_CONTROLLER
 	select CLKSRC_MMIO
+	select COMMON_CLK
 	select GENERIC_IRQ_CHIP
 	select GPIOLIB
 	select PINCTRL
diff --git a/sound/soc/sunxi/Kconfig b/sound/soc/sunxi/Kconfig
index 69b9d8515335..ddcaaa98d3cb 100644
--- a/sound/soc/sunxi/Kconfig
+++ b/sound/soc/sunxi/Kconfig
@@ -14,7 +14,7 @@ config SND_SUN8I_CODEC
 	tristate "Allwinner SUN8I audio codec"
 	depends on OF
 	depends on MACH_SUN8I || (ARM64 && ARCH_SUNXI) || COMPILE_TEST
-	select COMMON_CLK
+	depends on COMMON_CLK
 	select REGMAP_MMIO
 	help
 	  This option enables the digital part of the internal audio codec for
-- 
2.25.1