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Subject[PATCH] ASoC: rnsd: fix build regression without CONFIG_OF
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The r-car sound driver only works when CONFIG_OF is set, and
after a recent change has a compile-time dependency as well:

sound/built-in.o: In function `rsnd_dma_request_channel':
:(.text+0x9fb84): undefined reference to `of_dma_request_slave_channel'

This could be fixed either by adding a static inline wrapper
for the function, or by adding a Kconfig dependency. This
implements the second approach, which seems appropriate
because the driver in fact has a hard dependency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 72adc61f4637aa3 ("ASoC: rsnd: 1st DMAC dma-names cares subnode")

diff --git a/sound/soc/sh/Kconfig b/sound/soc/sh/Kconfig
index 2b3030415573..07114b0b0dc1 100644
--- a/sound/soc/sh/Kconfig
+++ b/sound/soc/sh/Kconfig
@@ -36,6 +36,7 @@ config SND_SOC_SH4_SIU

config SND_SOC_RCAR
tristate "R-Car series SRU/SCU/SSIU/SSI support"
+ depends on DMA_OF
select SND_SIMPLE_CARD
select REGMAP_MMIO
help


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