ASoC: rockchip: pdm: select CONFIG_RATIONAL

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@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index 957046ac6c8ca1438dde183a0382489f5ccd8ef8..d88555e0c38963b5e138a4d10d720364af9dd3bf 100644 (file)
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -19,6 +19,7 @@ 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