USB and HPT366 don't like each other

From: Nils Rennebarth (nils@ipe.uni-stuttgart.de)
Date: Mon Jun 05 2000 - 09:43:52 EST

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On my Athlon (ABit K7A Board) system running linux-2.4.0test1-ac8,
and the recently posted patch from Bartlomiej Zolnierkiewicz, strange things
happen when I enable DMA on my IBM IDE disks attached to the addon
HPT 366 controller:

# hdparm -d1 -c1 -X66 /dev/hdg
# hdparm -tT /dev/hdg

and as soon as the -t Test of hdparm runs I get an endless flood of

Jun 5 16:31:51 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:53 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:53 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:53 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:53 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 20, frame# 273
Jun 5 16:31:54 obelix kernel: usb-uhci.c: interrupt, status 31, frame# 273

until I reboot the computer.

Is the USB code unwilling to share it's interrupt?

Nils

-- Plug-and-Play is really nice, unfortunately it only works 50% of the time. To be specific the "Plug" almost always works. --unknown source

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Next message: David Luyer: "Re: (reiserfs) Re: New Linux 2.5 - 2.6 TODO (Alan Cox suggests delaying reiserfs integration)"
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