From: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx> commit 252ff06a4cb4e572cb3c7fcfa697db96b08a7781 upstream. This driver makes use of regmap_spi, but does not select the required module. Add the missing 'select REGMAP_SPI'. Fixes: 8316cebd1e59 ("iio: dac: add support for ltc1660") Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx> Link: https://patch.msgid.link/20241003-ad2s1210-select-v1-7-4019453f8c33@xxxxxxxxx Cc: <Stable@xxxxxxxxxxxxxxx> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/iio/dac/Kconfig | 1 + 1 file changed, 1 insertion(+) --- a/drivers/iio/dac/Kconfig +++ b/drivers/iio/dac/Kconfig @@ -124,6 +124,7 @@ config AD5624R_SPI config LTC1660 tristate "Linear Technology LTC1660/LTC1665 DAC SPI driver" depends on SPI + select REGMAP_SPI help Say yes here to build support for Linear Technology LTC1660 and LTC1665 Digital to Analog Converters. Patches currently in stable-queue which might be from javier.carrasco.cruz@xxxxxxxxx are queue-5.4/iio-proximity-mb1232-add-missing-select-iio_-triggered_-buffer-in-kconfig.patch queue-5.4/iio-adc-ti-ads124s08-add-missing-select-iio_-triggered_-buffer-in-kconfig.patch queue-5.4/iio-dac-ltc1660-add-missing-select-regmap_spi-in-kconfig.patch queue-5.4/iio-dac-stm32-dac-core-add-missing-select-regmap_mmio-in-kconfig.patch queue-5.4/iio-adc-ti-ads8688-add-missing-select-iio_-triggered_-buffer-in-kconfig.patch