Gentoo Kernel 4.4.6 - modprobe fails to load mt7630e module (missing CRC-CCITT routine)

[neurobin]

Gentoo Kernel 4.4.6 - modprobe fails to load mt7630e module (missing CRC-CCITT routine)

[AndyMender]

Unfortunately, this only solves loading of the module. Creating a connection is still impossible as another error pops up: crc RXD_W3_CIPHER_ERROR. Once this is solved and I can actually connect, I will submit a proper patch :).

Per 'crc RXD_W3_CIPHER_ERROR' I tried enabling every possible Cryptographic algorithm in the Linux kernel with no success. The source code is not very specific what this error means.

EDIT:
I finally managed to pinpoint the missing kernel features!
The Mediatek mt7630e wireless NIC driver you are currently maintaining provides the following kernel modules:

mt7630e
mt76xx
In order for mt7630e to properly attach to the NIC, 2 kernel features are mandatory:
crc_ccitt (for the module to attach at all)
eeprom_93xc6 (for the module to gover authorization without errors)
The above features can be found in the kernel tree via the following branches:
Device Drivers> Misc devices>EEPROM support>EEPROM 93CX6 support
Library routines>CRC-CCITT functions (though all 'crc' related library routines may be required)
After having those 2 features and compiling the mt7630e driver properly, 'lsmod' should report the following (or something similar):
Module Size Used by
mt7630e 156040 0
mt76xx 9536 0
crc_ccitt 1531 1 mt7630e
eeprom_93cx6 2715 1 mt7630e
x86_pkg_temp_thermal 5061 0
crc32_pclmul 2803 0
crc32c_intel 13062 0
shpchp 23762 0

I strongly recommend adding this to the documentation for this repository. Also, the issue can be closed at this point.

[neurobin]

Seems like you solved it. It would be great if you posted your solutions here (both). That would help others having the same problem...

Regards,
Jahid

[dakk]

Same problem here; I was using the driver on gentoo with a debian-sources kernel and was working fine. Then I switched to a manually configured kernel and the module works fine with compiling the kernel EEPROM and CRC-CCITT.
I tested the solution from Andy in 4.8.15-1 and 4.9.10

[dakk]

Update: in gentoo (and funtoo) the default genkernel configuration build all needed modules