CVS commit: src/sys/dev/usb

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Tue Sep  7 10:42:48 UTC 2021

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

Log Message:
ugen(4): Prevent ugenopen while ugen_set_config is in progress.

(except on the control endpoint)

Although we hold the kernel lock (which we should eventually change),
we may sleep in usbd_set_config_no at which point ugenopen might
happen and start making use of endpoint state which we'll stomp all
over once usbd_set_config_no returns.  Setting sc_is_open[endpt]
while we wait prevents this.


To generate a diff of this commit:
cvs rdiff -u -r1.160 -r1.161 src/sys/dev/usb/ugen.c

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