mcs7780 USB IrDA missing from 5.4 and newer kernels

Asked by Linuxslate on 2021-05-02

IrDA modules, including mcs7780.ko are missing.

Currently using:
Linux ***** 5.4.0-72-generic #80-Ubuntu SMP Mon Apr 12 17:35:00 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

The module is present in older versions of Ubuntu, in /lib/modules/[kernel version]/kernel/drivers/net/irda/mcs7780.ko

Is there another module that currently supports USB IrDA devices with this chip? Has it moved?

Bus 001 Device 013: ID 9710:7780 MosChip Semiconductor MCS7780 4Mbps Fast IrDA Adapter

It's very unusual to see a Linux Dist drop support like this with no way back (short of building a new kernel).

Apologies if I am just missing something.

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Linuxslate (johnapf) said : #1

Not a bug in any particular project (kernel module).

Are you running this on a raspberry pi?

Linuxslate (johnapf) said : #3


Regular PC: Intel® Core™ i7-4770 CPU @ 3.40GHz × 8

I simply need the IRDA device to appear as a simple serial port.

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