CVS commit: src/sys/dev/usb

["Rin Okuyama" <rin%netbsd.org@localhost>]

Module Name:    src
Committed By:   rin
Date:           Sun Feb 17 04:17:31 UTC 2019

Modified Files:
        src/sys/dev/usb: usbdi.c

Log Message:
Fix system freeze when USB NICs with multiple outstanding transfers
are detached from xhci(4) or ehci(4), that enable up_serialise for
bulk transfers.

The cause of problem is that usbd_ar_pipe() waits xfers of
USBD_NOT_STARTED to be removed, although underlying upm_abort
functions do not remove such queues, as reported by "sc dying".

Therefore, remove xfers of USBD_NOT_STARTED when pipe is closed.

Patch provided by Nick Hudson.


To generate a diff of this commit:
cvs rdiff -u -r1.181 -r1.182 src/sys/dev/usb/usbdi.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.