FYI, we noticed the below changes on
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git testing
commit 2b5c53d2c958bda92310d1b371a9314f4aa8c274 ("Add htu21 meas-spec driver
support")
It appears that is name conflict between your driver and an existing driver.
[ 21.992858] Error: Driver 'htu21' is already registered, aborting...
[ 21.992858] Error: Driver 'htu21' is already registered, aborting...
Thanks,
Ying Huang