Messages in this thread | | | Date | Fri, 4 Jun 2004 15:39:11 -0400 | From | "Zephaniah E. Hull" <> | Subject | USBDEVFS_RESET deadlocks USB bus. |
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Starting at 2.6.7-rc1 or so (that is when we first noticed it) the new pilot-link libusb back end started deadlocking the entire USB bus that the palm device was on.
I have finally tracked it down to happening when we make the USBDEVFS_RESET ioctl, we never return from it and from that point on the bus in question is completely dead, no processing is done, no notifications of devices being plugged in or unplugged.
This is still happening in 2.6.7-rc2-mm1.
It seems to happen with both the UHCI and OHCI back ends, so it is probably above that.
Given that there were heavy locking changes, I suspect that the case in question got screwed up somehow.
-- 1024D/E65A7801 Zephaniah E. Hull <warp@babylon.d2dc.net> 92ED 94E4 B1E6 3624 226D 5727 4453 008B E65A 7801 CCs of replies from mailing lists are requested.
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