[media] stk1160: Build as a module if SND is m and audio support is selected

As reported by Randy Dunlap:
When CONFIG_SND=m and CONFIG_SND_AC97_CODEC=m and
CONFIG_VIDEO_STK1160=y
CONFIG_VIDEO_STK1160_AC97=y
drivers/built-in.o: In function `stk1160_ac97_register':
(.text+0x122706): undefined reference to `snd_card_create'
drivers/built-in.o: In function `stk1160_ac97_register':
(.text+0x1227b2): undefined reference to `snd_ac97_bus'
drivers/built-in.o: In function `stk1160_ac97_register':
(.text+0x1227cd): undefined reference to `snd_card_free'
drivers/built-in.o: In function `stk1160_ac97_register':
(.text+0x12281b): undefined reference to `snd_ac97_mixer'
drivers/built-in.o: In function `stk1160_ac97_register':
(.text+0x122832): undefined reference to `snd_card_register'
drivers/built-in.o: In function `stk1160_ac97_unregister':
(.text+0x12285e): undefined reference to `snd_card_free'

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/usb/stk1160/Kconfig b/drivers/media/usb/stk1160/Kconfig
index 1c3a1ec00237c4b6b2e2f3d10a2e7205d6d853fc..95584c15dc5aa7813444a3d51408142b8032b357 100644 (file)
--- a/drivers/media/usb/stk1160/Kconfig
+++ b/drivers/media/usb/stk1160/Kconfig
@@ -1,8 +1,6 @@
-config VIDEO_STK1160
+config VIDEO_STK1160_COMMON
        tristate "STK1160 USB video capture support"
        depends on VIDEO_DEV && I2C
-       select VIDEOBUF2_VMALLOC
-       select VIDEO_SAA711X
 
        ---help---
          This is a video4linux driver for STK1160 based video capture devices.
@@ -12,9 +10,15 @@ config VIDEO_STK1160
 
 config VIDEO_STK1160_AC97
        bool "STK1160 AC97 codec support"
-       depends on VIDEO_STK1160 && SND
-       select SND_AC97_CODEC
+       depends on VIDEO_STK1160_COMMON && SND
 
        ---help---
          Enables AC97 codec support for stk1160 driver.
-.
+
+config VIDEO_STK1160
+       tristate
+       depends on (!VIDEO_STK1160_AC97 || (SND='n') || SND) && VIDEO_STK1160_COMMON
+       default y
+       select VIDEOBUF2_VMALLOC
+       select VIDEO_SAA711X
+       select SND_AC97_CODEC if SND