diff options
| author | Damien Bergamini <damien@cvs.openbsd.org> | 2009-11-23 19:54:55 +0000 |
|---|---|---|
| committer | Damien Bergamini <damien@cvs.openbsd.org> | 2009-11-23 19:54:55 +0000 |
| commit | ea64b95342840bfea50f8f7650624dddd8957c31 (patch) | |
| tree | 2f9f58078c7386c6afde8353253081f1d3097622 /sys/dev/ic | |
| parent | e0517e3c1088985b95021bf0319a79a3e4040b83 (diff) | |
prevent interrupts storm when the radio switch is turned off while
the interface is up and running by properly clearing the condition.
Diffstat (limited to 'sys/dev/ic')
| -rw-r--r-- | sys/dev/ic/athn.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/dev/ic/athn.c b/sys/dev/ic/athn.c index 9e578d2bdbc..845ba267460 100644 --- a/sys/dev/ic/athn.c +++ b/sys/dev/ic/athn.c @@ -1,4 +1,4 @@ -/* $OpenBSD: athn.c,v 1.17 2009/11/23 19:11:06 damien Exp $ */ +/* $OpenBSD: athn.c,v 1.18 2009/11/23 19:54:54 damien Exp $ */ /*- * Copyright (c) 2009 Damien Bergamini <damien.bergamini@free.fr> @@ -4727,6 +4727,9 @@ athn_stop(struct ifnet *ifp, int disable) /* Disable interrupts. */ athn_disable_interrupts(sc); + /* Acknowledge interrupts (avoids interrupt storms.) */ + AR_WRITE(sc, AR_INTR_SYNC_CAUSE, 0xffffffff); + AR_WRITE(sc, AR_INTR_SYNC_MASK, 0); for (qid = 0; qid < ATHN_QID_COUNT; qid++) athn_stop_tx_dma(sc, qid); |