On Thu, Nov 17, 2022 at 12:45:05AM +0000, Daniel Golle wrote:

Add a small block driver which allows exposing filesystem sub-images
contained in U-Boot uImage.FIT images as block partitions.
The driver is intended for system using the U-Boot bootloader and
requires the user to specify the lower block device to be specified
as module parameter 'lower_dev'.

Umm, this is is not a block device driver.  A block device driver
would take in bios and the upper devices it creates and then submit
them to the lower devices.