Without this, we get a link error:
sound/soc/rockchip/rockchip_pdm.o: In function `rockchip_pdm_hw_params':
rockchip_pdm.c:(.text+0x754): undefined reference to `rational_best_approximation'
Fixes: 624e8e00acaf ("ASoC: rockchip: pdm: fixup pdm fractional div")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
sound/soc/rockchip/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index 28a80c1cb41d..b43657e6e655 100644
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -20,6 +20,7 @@ config SND_SOC_ROCKCHIP_PDM
tristate "Rockchip PDM Controller Driver"
depends on CLKDEV_LOOKUP && SND_SOC_ROCKCHIP
select SND_SOC_GENERIC_DMAENGINE_PCM
+ select RATIONAL
help
Say Y or M if you want to add support for PDM driver for
Rockchip PDM Controller. The Controller supports up to maximum of
--
2.20.0
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