[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/4749823da889
branches:  trunk
changeset: 939915:4749823da889
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 97ca01b63a86 -r 4749823da889 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
@@ -5802,6 +5802,7 @@
                        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. */
@@ -5810,6 +5811,7 @@
                        usbd_abort_pipe(sc->rx_pipe[i]);
        }
        mutex_exit(&sc->sc_rx_mtx);
+       urtwn_wait_async(sc);
 
        sc->sc_running = false;
        if (disable)