sytem reboots when initializing Edirol FA-101 firewire audio interface

[Steve Morris <morris@buinea.com>]

Hi All,

I'm running Arch Linux x86_64

My system consistently reboots when I power on my FA-101 when running
kernels 5.5.1-4. Downgrading to 5.4.15 allows everything to work
properly.

Here's the outpu of:
journalctl  | grep -E 'Reboot|firewire|fw|bebob|alsa|jack'

This is a good init under 5.4.15:
-- Reboot --
powered on interface while running 5.4.15, initialized properly
Feb 18 18:35:37 hostname kernel: firewire_ohci 0000:05:00.0: enabling device (0080 -> 0083)
Feb 18 18:35:37 hostname kernel: firewire_ohci 0000:05:00.0: added OHCI v1.10 device as card 0, 4 IR + 8 IT contexts, quirks 0x11
Feb 18 18:35:37 hostname kernel: firewire_core 0000:05:00.0: created device fw0: GUID 0011223333666677, S400
Feb 18 18:35:37 hostname systemd-udevd[541]: controlC0: Process '/usr/bin/alsactl restore 0' failed with exit code 99.
Feb 18 18:35:37 hostname systemd-udevd[541]: controlC1: Process '/usr/bin/alsactl restore 1' failed with exit code 99.
Feb 18 18:35:38 hostname kernel: amdgpu: [powerplay] smu driver if version = 0x00000033, smu fw if version = 0x00000035, smu fw version = 0x002a3200 (42.50.0)
Feb 18 18:36:08 hostname kernel: firewire_ohci 0000:05:00.0: isochronous cycle inconsistent
Feb 18 18:36:08 hostname kernel: firewire_core 0000:05:00.0: created device fw1: GUID 0040ab0000c20bc1, S400
Feb 18 18:36:08 hostname kernel: firewire_core 0000:05:00.0: phy config: new root=ffc1, gap_count=5
Feb 18 18:36:10 hostname kernel: firewire_core 0000:05:00.0: BM lock failed (timeout), making local node (ffc0) root
Feb 18 18:36:10 hostname kernel: firewire_core 0000:05:00.0: phy config: new root=ffc0, gap_count=5
Feb 18 18:36:12 hostname systemd-udevd[1532]: controlC2: Process '/usr/bin/alsactl restore 2' failed with exit code 99.
Feb 18 18:36:15 hostname kernel: snd-bebob fw1.0: transaction failed: no ack
Feb 18 18:36:15 hostname kernel: snd-bebob fw1.0: fail to get an input for MSU in plug 7: -5
Feb 18 18:36:15 hostname kernel: snd-bebob fw1.0: transaction failed: no ack
Feb 18 18:36:15 hostname kernel: snd-bebob fw1.0: fail to get an input for MSU in plug 7: -5

This is a bad init under 5.5.4:
-- Reboot --
Powered on interface when machine was running.
Feb 18 18:13:37 hostname kernel: firewire_ohci 0000:05:00.0: enabling device (0080 -> 0083)
Feb 18 18:13:37 hostname kernel: firewire_ohci 0000:05:00.0: added OHCI v1.10 device as card 0, 4 IR + 8 IT contexts, quirks 0x11
Feb 18 18:13:37 hostname kernel: firewire_core 0000:05:00.0: created device fw0: GUID 0011223333666677, S400
Feb 18 18:13:37 hostname kernel: audit: type=1130 audit(1582078417.360:3): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=ufw comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Feb 18 18:13:37 hostname audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=ufw comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Feb 18 18:13:37 hostname systemd-udevd[539]: controlC0: Process '/usr/bin/alsactl restore 0' failed with exit code 99.
Feb 18 18:13:37 hostname systemd-udevd[530]: controlC1: Process '/usr/bin/alsactl restore 1' failed with exit code 99.
Feb 18 18:13:38 hostname kernel: amdgpu: [powerplay] smu driver if version = 0x00000033, smu fw if version = 0x00000035, smu fw version = 0x002a3200 (42.50.0)
Feb 18 18:19:45 hostname kernel: firewire_core 0000:05:00.0: phy config: new root=ffc1, gap_count=5
Feb 18 18:19:48 hostname kernel: firewire_core 0000:05:00.0: phy config: new root=ffc1, gap_count=5
Feb 18 18:19:48 hostname kernel: firewire_core 0000:05:00.0: created device fw1: GUID 0040ab0000c20bc1, S400
Feb 18 18:19:52 hostname systemd-udevd[1682]: controlC2: Process '/usr/bin/alsactl restore 2' failed with exit code 99.
Feb 18 18:20:08 hostname kernel: snd-bebob fw1.0: transaction failed: no ack
Feb 18 18:20:08 hostname kernel: snd-bebob fw1.0: fail to get an input for MSU in plug 7: -5
Feb 18 18:20:08 hostname kernel: snd-bebob fw1.0: transaction failed: no ack
Feb 18 18:20:08 hostname kernel: snd-bebob fw1.0: fail to get an input for MSU in plug 7: -5
Feb 18 18:20:12 hostname kernel: firewire_core 0000:05:00.0: phy config: new root=ffc1, gap_count=5
Feb 18 18:21:24 hostname kernel: firewire_ohci 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0001 address=0xd5080000 flags=0x0000]
Followed by 125 more O_PAGE_FAULT and then the reboot,

I'll be happy to provide additional information if needed.

Steve