[mythtv-users] lirc_serial move to serial_ir nightmare in kernel 4.12

[Stephen Worthington]

On Tue, 22 Aug 2017 09:43:53 -0400, you wrote:

>On Tue, Aug 22, 2017 at 8:29 AM, Richard Shaw <hobbes1069 at gmail.com> wrote:
>> On Mon, Aug 21, 2017 at 11:04 PM, Tom Dexter <digitalaudiorock at gmail.com>
>> wrote:
>>>
>>> On Mon, Aug 21, 2017 at 8:55 PM, Alec Leamas <leamas.alec at gmail.com>
>>> wrote:
>>> >
>>> > Could it be the kernel driver issue discussed in the lirc mailing list
>>> > [1] ?
>>> >
>>> >
>>> > --alec
>>> >
>>> > [1] https://sourceforge.net/p/lirc/mailman/message/35926194/
>>>
>>> This day is gonna make me cry yet. I just joined the lirc-list mailing
>>> list and I swear to God, nothing anywhere tells me what the email
>>> address is that I need to send to! Anyone have a clue what that is?
>>> Apparently the list name is lirc-list. No words for this day at all...
>>
>>
>> yes, the lirc_serial to lirc_ir transition bit me too... It took me weeks to
>> figure it out. I finally got mine working again but I'm using a simple
>> hardware serial port receiver.
>>
>> Not sure if it will help you but the "magic incantation" I had to do was add
>> the following to lirc_options.conf:
>>
>> [modinit]
>> code1 = /usr/sbin/rmmod serial_ir
>> code2 = /usr/bin/setserial /dev/ttyS0 uart none
>> code3 = /usr/sbin/modprobe serial_ir
>>
>> The module gets loaded before I can disable the uart...
>>
>> Thanks,
>> Richard
>
>I'm using a simple hardware serial port receiver as well. Not only
>that, none of the potential issues with the serial port uart are an
>issue for me as I have the SERIAL_8250 disabled in my kernel
>altogether. All the lirc stuff is compiled in as well...no modules
>involved at all. What's ever more perplexing is the fact that mode2
>works with the default driver and /dev/lirc0 that I'm using, which
>rules about everything except something breaking the decoding. That
>would seem to be an issue with the ir-lirc-codec. That's used by the
>serial_ir but wasn't needed for lirc_serial.
>
>There were even several bugs around just that in ir-lirc-codec.c, all
>of which I've patched into the kernel, and still no luck. Just
>horrible.
>
>Tom

So maybe you need to compile serial_ir as a module, so that you can
reload it after disabling the uart module from grabbing the port.