cvs commit: src/sys/dev/usb ugen.c
imp at FreeBSD.org
Wed Sep 8 00:13:40 PDT 2004
imp 2004-09-08 07:13:39 UTC
FreeBSD src repository
Back out 1.88.
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.
Revision Changes Path
1.89 +11 -9 src/sys/dev/usb/ugen.c
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