linux-kernel - Re: undefined reference to `snd_timer

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Date:	Wed, 27 Jan 2016 07:13:43 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	kbuild test robot <fengguang.wu@...el.com>
Cc:	Jie Yang <yang.jie@...el.com>, kbuild-all@...org,
	linux-kernel@...r.kernel.org
Subject: Re: undefined reference to `snd_timer_interrupt'

On Tue, 26 Jan 2016 23:16:55 +0100,
kbuild test robot wrote:
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   92e963f50fc74041b5e9e744c330dca48e04f08d
> commit: 90bbaf66ee7b946952f1e82a0069639dea5fd893 ALSA: timer: add config item to export PCM timer disabling for expert
> date:   3 months ago
> config: x86_64-randconfig-s0-01270516 (attached as .config)
> reproduce:
>         git checkout 90bbaf66ee7b946952f1e82a0069639dea5fd893
>         # save the attached .config to linux build tree
>         make ARCH=x86_64 
> 
> All errors (new ones prefixed by >>):
> 
>    sound/built-in.o: In function `snd_emu10k1_interrupt':
> >> (.text+0x604c7): undefined reference to `snd_timer_interrupt'
>    sound/built-in.o: In function `snd_emu10k1_timer':
> >> (.text+0x70d5d): undefined reference to `snd_timer_new'

Fixed by the patch below.


thanks,

Takashi

-- 8< --
From: Takashi Iwai <tiwai@...e.de>
Subject: [PATCH] ALSA: Add missing dependency on CONFIG_SND_TIMER

Since the build of PCM timer may be disabled via Kconfig now, each
driver that provides a timer interface needs to set CONFIG_SND_TIMER
explicitly.  Otherwise it may get a build error due to missing
symbol.

Fixes: 90bbaf66ee7b ('ALSA: timer: add config item to export PCM timer disabling for expert')
Reported-by: kbuild test robot <fengguang.wu@...el.com>
Cc: <stable@...r.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
 sound/isa/Kconfig   | 4 ++++
 sound/pci/Kconfig   | 3 +++
 sound/sparc/Kconfig | 1 +
 3 files changed, 8 insertions(+)

diff --git a/sound/isa/Kconfig b/sound/isa/Kconfig
index 0216475fc759..37adcc6cbe6b 100644
--- a/sound/isa/Kconfig
+++ b/sound/isa/Kconfig
@@ -3,6 +3,7 @@
 config SND_WSS_LIB
         tristate
         select SND_PCM
+	select SND_TIMER
 
 config SND_SB_COMMON
         tristate
@@ -42,6 +43,7 @@ config SND_AD1816A
 	select SND_OPL3_LIB
 	select SND_MPU401_UART
 	select SND_PCM
+	select SND_TIMER
 	help
 	  Say Y here to include support for Analog Devices SoundPort
 	  AD1816A or compatible sound chips.
@@ -209,6 +211,7 @@ config SND_GUSCLASSIC
 	tristate "Gravis UltraSound Classic"
 	select SND_RAWMIDI
 	select SND_PCM
+	select SND_TIMER
 	help
 	  Say Y here to include support for Gravis UltraSound Classic
 	  soundcards.
@@ -221,6 +224,7 @@ config SND_GUSEXTREME
 	select SND_OPL3_LIB
 	select SND_MPU401_UART
 	select SND_PCM
+	select SND_TIMER
 	help
 	  Say Y here to include support for Gravis UltraSound Extreme
 	  soundcards.
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index 656ce39bddbc..8f6594a7d37f 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -155,6 +155,7 @@ config SND_AZT3328
 	select SND_PCM
 	select SND_RAWMIDI
 	select SND_AC97_CODEC
+	select SND_TIMER
 	depends on ZONE_DMA
 	help
 	  Say Y here to include support for Aztech AZF3328 (PCI168)
@@ -463,6 +464,7 @@ config SND_EMU10K1
 	select SND_HWDEP
 	select SND_RAWMIDI
 	select SND_AC97_CODEC
+	select SND_TIMER
 	depends on ZONE_DMA
 	help
 	  Say Y to include support for Sound Blaster PCI 512, Live!,
@@ -889,6 +891,7 @@ config SND_YMFPCI
 	select SND_OPL3_LIB
 	select SND_MPU401_UART
 	select SND_AC97_CODEC
+	select SND_TIMER
 	help
 	  Say Y here to include support for Yamaha PCI audio chips -
 	  YMF724, YMF724F, YMF740, YMF740C, YMF744, YMF754.
diff --git a/sound/sparc/Kconfig b/sound/sparc/Kconfig
index d75deba5617d..dfcd38647606 100644
--- a/sound/sparc/Kconfig
+++ b/sound/sparc/Kconfig
@@ -22,6 +22,7 @@ config SND_SUN_AMD7930
 config SND_SUN_CS4231
 	tristate "Sun CS4231"
 	select SND_PCM
+	select SND_TIMER
 	help
 	  Say Y here to include support for CS4231 sound device on Sun.
 
-- 
2.7.0