The mtk-sd driver requires a regulator to be present, even if it is the "fixed" regulator. So select REGULATOR to make it hard to build unusable configurations. Signed-off-by: NeilBrown <neil@xxxxxxxxxx> --- drivers/mmc/host/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 9c01310a0d2e..1249cde7004d 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -941,6 +941,7 @@ config MMC_BCM2835 config MMC_MTK tristate "MediaTek SD/MMC Card Interface support" depends on HAS_DMA + select REGULATOR help This selects the MediaTek(R) Secure digital and Multimedia card Interface. If you have a machine with a integrated SD/MMC card reader, say Y or M here.