ASoC: rt5677: fix SPI dependency
authorArnd Bergmann <arnd@arndb.de>
Wed, 28 Jan 2015 21:31:30 +0000 (22:31 +0100)
committerMark Brown <broonie@kernel.org>
Thu, 29 Jan 2015 11:52:21 +0000 (11:52 +0000)
commit4c121129c9dcb43b33d1cd568c8f2636e72597b0
tree862bb1ac06bc307cf88a93306dbe4267b472b80e
parent9913b9f549330e9b72945ec94cb9c7fe57d78cce
ASoC: rt5677: fix SPI dependency

The rt5677 codec has gained code that requires SPI to work correctly,
but there is no provision in Kconfig to prevent the driver from
being used when SPI is disabled or a loadable module, resulting
in this build error:

sound/built-in.o: In function `rt5677_spi_write':
:(.text+0xa7ba0): undefined reference to `spi_sync'
sound/built-in.o: In function `rt5677_spi_driver_init':
:(.init.text+0x253c): undefined reference to `spi_register_driver'

ERROR: "spi_sync" [sound/soc/codecs/snd-soc-rt5677-spi.ko] undefined!
ERROR: "spi_register_driver" [sound/soc/codecs/snd-soc-rt5677-spi.ko] undefined!

This makes the SPI portion of the driver depend on the SPI subsystem,
and disables the function that uses SPI for firmware download if SPI
is disabled. The latter may not be the correct solution, but I could
not come up with a better one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: af48f1d08a54741 ("ASoC: rt5677: Support DSP function for VAD application")
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/codecs/Kconfig
sound/soc/codecs/rt5677.c