linux-kernel - [PATCH v2] um/drivers: Kconfig: fix hostaudio build errors

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Message-ID: <20230723215756.18307-1-rdunlap@infradead.org>
Date:   Sun, 23 Jul 2023 14:57:56 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Johannes Berg <johannes@...solutions.net>,
        linux-um@...ts.infradead.org, Tejun Heo <tj@...nel.org>,
        Takashi Iwai <tiwai@...e.de>, Jaroslav Kysela <perex@...ex.cz>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        linux-kbuild@...r.kernel.org
Subject: [PATCH v2] um/drivers: Kconfig: fix hostaudio build errors

Use "select"s to ensure that the required kconfig symbols are set
as expected.

This fixes build errors when CONFIG_SOUND is not set.

ld: arch/um/drivers/hostaudio_kern.o: in function `hostaudio_cleanup_module':
hostaudio_kern.c:(.exit.text+0xa): undefined reference to `unregister_sound_mixer'
ld: hostaudio_kern.c:(.exit.text+0x15): undefined reference to `unregister_sound_dsp'
ld: arch/um/drivers/hostaudio_kern.o: in function `hostaudio_init_module':
hostaudio_kern.c:(.init.text+0x19): undefined reference to `register_sound_dsp'
ld: hostaudio_kern.c:(.init.text+0x31): undefined reference to `register_sound_mixer'
ld: hostaudio_kern.c:(.init.text+0x49): undefined reference to `unregister_sound_dsp'

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Fixes: d886e87cb82b ("sound: make OSS sound core optional")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Link: lore.kernel.org/r/202307141416.vxuRVpFv-lkp@...el.com
Cc: Richard Weinberger <richard@....at>
Cc: Anton Ivanov <anton.ivanov@...bridgegreys.com>
Cc: Johannes Berg <johannes@...solutions.net>
Cc: linux-um@...ts.infradead.org
Cc: Tejun Heo <tj@...nel.org>
Cc: Takashi Iwai <tiwai@...e.de>
Cc: Jaroslav Kysela <perex@...ex.cz>
Cc: Masahiro Yamada <masahiroy@...nel.org>
Cc: Nathan Chancellor <nathan@...nel.org>
Cc: Nick Desaulniers <ndesaulniers@...gle.com>
Cc: Nicolas Schier <nicolas@...sle.eu>
Cc: linux-kbuild@...r.kernel.org
---
v2: don't delete the HOSTAUDIO Kconfig entry (Masahiro)

 arch/um/drivers/Kconfig |   10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff -- a/arch/um/drivers/Kconfig b/arch/um/drivers/Kconfig
--- a/arch/um/drivers/Kconfig
+++ b/arch/um/drivers/Kconfig
@@ -111,20 +111,14 @@ config SSL_CHAN
 
 config UML_SOUND
 	tristate "Sound support"
+	select SOUND
+	select SOUND_OSS_CORE
 	help
 	  This option enables UML sound support.  If enabled, it will pull in
 	  soundcore and the UML hostaudio relay, which acts as a intermediary
 	  between the host's dsp and mixer devices and the UML sound system.
 	  It is safe to say 'Y' here.
 
-config SOUND
-	tristate
-	default UML_SOUND
-
-config SOUND_OSS_CORE
-	bool
-	default UML_SOUND
-
 config HOSTAUDIO
 	tristate
 	default UML_SOUND