On Mon, Oct 09, 2017 at 12:58:25PM +0300, Аладышев Константин wrote: > I try to port coreboot on boards with Haswell CPU and Lynxpoint LP chipset > (IBASE IB908AF-4650 board, DFI HU968) and I've encountered a strange > problem. USB devices stop working shortly after OS boot (or after USB device > replug in OS) with flooding system with messages:
Interesting -- I ran into the exact same bug with Haswell while porting the NERF firmware and a 4.9.x kernel, and had attributed it to my not setting up something right. It's good to hear that maybe it isn't my fault (maybe). > [...] > Through some digging I've found out that this problem persist on kernels > <3.5. I've investigated this problem more closely and come down to the fact > that the kernel commit that solves this problem is: > > 3d9545c EHCI: maintain the ehci->command value properly > > https://github.com/torvalds/linux/commit/3d9545cc375d117554a9b35dfddadf9189c > 62775?diff=split Does it work if you back out that patch? For my purpose it might be enough to maintain a patch until we figure out what is really going on. -- Trammell -- coreboot mailing list: [email protected] https://mail.coreboot.org/mailman/listinfo/coreboot
