linux-kernel - [PATCH 1/2] ASoC: apple: mca: Unselect COMMON

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Date:   Thu,  1 Sep 2022 13:34:14 +0200
From:   Martin Povišer <povik+lin@...ebit.org>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-kernel@...r.kernel.org, asahi@...ts.linux.dev,
        alsa-devel@...a-project.org,
        Martin Povišer <povik+lin@...ebit.org>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH 1/2] ASoC: apple: mca: Unselect COMMON_CLK in Kconfig

The MCA driver selects COMMON_CLK, which leads to misconfiguration
on platforms with HAVE_LEGACY_CLK (under compile test). Kconfig catches
the conflict with the following warning:

  WARNING: unmet direct dependencies detected for COMMON_CLK
  Depends on [n]: !HAVE_LEGACY_CLK [=y]
  Selected by [m]:
  - SND_SOC_APPLE_MCA [=m] && SOUND [=m] && !UML && SND [=m] &&
    SND_SOC [=m] && (ARCH_APPLE || COMPILE_TEST [=y])

Eventually the build fails with errors like:

>> drivers/clk/clk.c:867:6: error: redefinition of 'clk_unprepare'
     867 | void clk_unprepare(struct clk *clk)
         |      ^~~~~~~~~~~~~
   In file included from drivers/clk/clk.c:9:
   include/linux/clk.h:303:20: note: previous definition of 'clk_unprepare' with type 'void(struct clk *)'
     303 | static inline void clk_unprepare(struct clk *clk)
         |                    ^~~~~~~~~~~~~

which appears to be because COMMON_CLK is selected but HAVE_CLK_PREPARE
is not. In the end it seems we had no business selecting COMMON_CLK from
an unrelated driver like that, so remove the selection. The linux/clk.h
API is there anyway.

Fixes: 3df5d0d97289 ("ASoC: apple: mca: Start new platform driver")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Martin Povišer <povik+lin@...ebit.org>
---
 sound/soc/apple/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/sound/soc/apple/Kconfig b/sound/soc/apple/Kconfig
index 0ba955657e98..793f7782e0d7 100644
--- a/sound/soc/apple/Kconfig
+++ b/sound/soc/apple/Kconfig
@@ -2,7 +2,6 @@ config SND_SOC_APPLE_MCA
 	tristate "Apple Silicon MCA driver"
 	depends on ARCH_APPLE || COMPILE_TEST
 	select SND_DMAENGINE_PCM
-	select COMMON_CLK
 	default ARCH_APPLE
 	help
 	  This option enables an ASoC platform driver for MCA peripherals found
-- 
2.33.0