cvs commit: src/sys/dev/usb ugen.c
M. Warner Losh
imp at bsdimp.com
Wed Sep 8 00:22:39 PDT 2004
In message: <200409080713.i887Dd54058789 at repoman.freebsd.org>
Warner Losh <imp at FreeBSD.org> writes:
: imp 2004-09-08 07:13:39 UTC
: FreeBSD src repository
: Modified files:
: sys/dev/usb ugen.c
: Back out 1.88.
1.87 I mean.
: The reference counts are there to block detach until the sleepers in
: read/write/ioctl have gotten out, not to prevent the open device from
: going away. Restore the old behavior so that we have a chance to wake
: up sleepers when the usb device goes away, so they can properly return
: EIO back to the caller when this happens.
: Otherwise, we have a guarnateed panic waiting to happen when a device
: detaches with an active read channel.
: This should be merged to 5 asap.
More information about the cvs-src