[lkml]   [2000]   [Nov]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [bug] usb-uhci locks up on boot half the time
David Ford <> writes:
> The oddity is that kdb shows the machine to lock up on the popf in
> pci_conf_write_word()+0x2c. I never did get around to digging up this
> routine and looking at the code, but I suspect this is a final return
> from the routine. I'm rather confused however, I have no idea why a
> flags pop would hang the hardware.

I've got a machine here that locks solid every time with -test10. It
locks up towards the end of start_uhci, where it calls:
/* disable legacy emulation */
pci_write_config_word (dev, USBLEGSUP, USBLEGSUP_DEFAULT);

Now, disabling this call seems to make the system work perfectly. The
machine is a Celeron 500 / Asus P3B-F (I think, it's at the office).
Also -test8 works, I haven't tried any of the test11-pre* versions yet.

Any things I should try to test? (Please CC me, as I don't have the
time to follow linux-kernel as closely as I would like at the moment.)

Harald Nordgård-Hansen, Linpro AS <><
PB. 375, N-1601 Fredrikstad, Norway Phone/Fax: +47 6935 2424/25
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:45    [W:0.092 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site