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 --- 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