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commitb7983033a1upstream. This driver makes use of regmap_spi, but does not select the required module. Add the missing 'select REGMAP_SPI'. Fixes:28b4c30bfa("iio: amplifiers: ada4250: add support for ADA4250") Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://patch.msgid.link/20241003-ad2s1210-select-v1-5-4019453f8c33@gmail.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>