From 6158425be398936af1fd04451f78ffad01529cb0 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" <lrodriguez@atheros.com> Date: Thu, 12 Mar 2009 18:18:49 -0400 Subject: ath9k: implement IO serialization All 802.11n PCI devices (Cardbus, PCI, mini-PCI) require serialization of IO when on non-uniprocessor systems. PCI express devices not not require this. This should fix our only last standing open ath9k kernel.org bugzilla bug report: http://bugzilla.kernel.org/show_bug.cgi?id=12110 A port is probably required to older kernels and I can work on that. Cc: stable@kernel.org Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> --- drivers/net/wireless/ath9k/main.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/wireless/ath9k/main.c') diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 0e80990d8e8..3c04044a60b 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1336,6 +1336,7 @@ static int ath_init(u16 devid, struct ath_softc *sc) printk(KERN_ERR "Unable to create debugfs files\n"); spin_lock_init(&sc->sc_resetlock); + spin_lock_init(&sc->sc_serial_rw); mutex_init(&sc->mutex); tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet, -- cgit v1.2.3-70-g09d2