reproduce (this is a W=1 build):
        git checkout 1ebab783647a9e3bf357002d5c4ff060c8474a0a
        b4 shazam https://lore.kernel.org/r/20240722-iio-pac1921-v3-3-05dc9916cb33@gmail.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um olddefconfig
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash drivers/iio/adc/