On Sun, 23 Jul 2023 23:57:56 +0200,
Randy Dunlap wrote:
>
> 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@xxxxxxxxxxxxx>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Link: lore.kernel.org/r/202307141416.vxuRVpFv-lkp@xxxxxxxxx
> Cc: Richard Weinberger <richard@xxxxxx>
> Cc: Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>
> Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
> Cc: linux-um@xxxxxxxxxxxxxxxxxxx
> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Takashi Iwai <tiwai@xxxxxxx>
> Cc: Jaroslav Kysela <perex@xxxxxxxx>
> Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
> Cc: Nathan Chancellor <nathan@xxxxxxxxxx>
> Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> Cc: Nicolas Schier <nicolas@xxxxxxxxx>
> Cc: linux-kbuild@xxxxxxxxxxxxxxx
> ---
> 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
And now essentially CONFIG_HOSTAUDIO is equal with CONFIG_UML_SOUND.
Then isn't it better to replace CONFIG_HOSTAUDIO in
arch/um/drivers/Makefile with CONFIG_UML_SOUND, so that you can drop
CONFIG_HOSTAUDIO as well?
thanks,
Takashi
