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ASoC: dwc: make pcm support built-in when necessary

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The new PIO mode for the dwc audio driver causes a link failure
when it is built as a loadable module but the audio driver is built-in:

sound/built-in.o: In function `i2s_irq_handler':
:(.text+0x58c64): undefined reference to `dw_pcm_push_tx'
sound/built-in.o: In function `dw_i2s_probe':
:(.text+0x593dc): undefined reference to `dw_pcm_register'

We could link both into a single module, but apparently the
author intended them to be separate, so this instead changes
the Makefile to force the pcm module to be built-in if the
base module is. This is a bit hacky but not as bad as trying
to work around it in Kconfig language.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 79361b2b98 ("ASoC: dwc: Add PIO PCM extension")
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Arnd Bergmann 2016-06-20 18:01:19 +02:00 committed by Mark Brown
parent 5aa1418def
commit 3276d0aa0b
1 changed files with 3 additions and 2 deletions
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5
sound/soc/dwc/Makefile
View file

@ -1,4 +1,5 @@
# SYNOPSYS Platform Support
obj-$(CONFIG_SND_DESIGNWARE_I2S) += designware_i2s.o
obj-$(CONFIG_SND_DESIGNWARE_PCM) += designware_pcm.o
ifdef CONFIG_SND_DESIGNWARE_PCM
obj-$(CONFIG_SND_DESIGNWARE_I2S) += designware_pcm.o
endif