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0e1f616
(Get the code!)
Hi Bevil,
I'm a maintainer of Linux FireWire subsystem, and I apologize to trouble you. Indeed, we can see unexpected system reboot in the following combination:
* Linux kernel version 6.5 or later
* Any kind of AMD Ryzen machines
* A kind of IEEE 1394 host controller which consists of:
** Asmedia ASM1083 (PCI/PCIe bridge)
** VIA VT6306/6307/6308 (1394 OHCI host controller)
You can see my short description about the issue in my PR to Linus for version 6.7 kernel.
* https://<email address hidden>/
The host controller card brings some kind of hardware trouble to the machine of AMD Ryzen architecture as a result of change added to 1394 OHCI driver (firewire-ohci), while I never figure out the mechanism yet, since the system reboots without any kind of information in console output. I continue to investigate further by every single way I can think of...
At present, no workaround found. I confirm that some portion to exclude the above condition enable system work again; e.g. usage of IEEE 1394 host controller with VIA6315 or VIA6305 connected with PCI bus without the bridge chip.
Regards