[src-draft/trunk]: src/sys/dev/usb Wait for device to sync after freeing xfers.

[Nathanial Sloss <nat%netbsd.org@localhost>]

details:   https://anonhg.NetBSD.org/src-all/rev/820086a444eb
branches:  trunk
changeset: 375544:820086a444eb
user:      Nathanial Sloss <nat%netbsd.org@localhost>
date:      Sun Aug 16 10:07:55 2020 +1000

description:
Wait for device to sync after freeing xfers.

diffstat:

 sys/dev/usb/if_urtwn.c |  2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diffs (19 lines):

diff -r 49c320531b2f -r 820086a444eb sys/dev/usb/if_urtwn.c
--- a/sys/dev/usb/if_urtwn.c    Sun Aug 16 10:07:12 2020 +1000
+++ b/sys/dev/usb/if_urtwn.c    Sun Aug 16 10:07:55 2020 +1000
@@ -5834,6 +5834,7 @@ urtwn_stop(struct ifnet *ifp, int disabl
                        usbd_abort_pipe(sc->tx_pipe[i]);
        }
        mutex_exit(&sc->sc_tx_mtx);
+       urtwn_wait_async(sc);
 
        mutex_enter(&sc->sc_rx_mtx);
        /* Stop Rx pipe. */
@@ -5842,6 +5843,7 @@ urtwn_stop(struct ifnet *ifp, int disabl
                        usbd_abort_pipe(sc->rx_pipe[i]);
        }
        mutex_exit(&sc->sc_rx_mtx);
+       urtwn_wait_async(sc);
 
        sc->sc_running = false;
        if (disable)