CVS commit: [netbsd-9] src/sys/dev/usb

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Tue Dec 17 12:55:10 UTC 2019

Modified Files:
        src/sys/dev/usb [netbsd-9]: usbnet.c

Log Message:
Pull up following revision(s) (requested by riastradh in ticket #565):

        sys/dev/usb/usbnet.c: revision 1.31
        sys/dev/usb/usbnet.c: revision 1.32
        sys/dev/usb/usbnet.c: revision 1.33

Fix order of nulling un->un_pri->unp_ec.ec_mii.

Can't null it until after if_detach prevents further use.

While here, fix conditionals in usbnet_tick_task to use the unp_dying
flag, not the nullness of mii (or of ifp, which never null because
it's an embedded member).

Fix inequality for refcnt drain: -1 here means all refs gone.

Don't assume mii is not null here. Some drivers like urndis don't use
mii, so they always have mii == NULL.
ok riastradh. fixes PR kern/54762


To generate a diff of this commit:
cvs rdiff -u -r1.25.2.3 -r1.25.2.4 src/sys/dev/usb/usbnet.c

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