Hey. I just ran into the same problem in bullseye. Linux lcg-lrz-admin 5.10.0-15-amd64 #1 SMP Debian 5.10.120-1 (2022-06-09) x86_64 GNU/Linux
Salvatore, AFAICS, that kernel should already contain the commit you've mentioned, however, it still gives an error about missing firmware. Downloading these 3 files from: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/bnx2x and manually adding it to /lib/firmware fixes the problem for me. Could someone please add them to the package and also for bullseye? Thanks, Chris.