From: Luis R. Rodriguez <lrodriguez@atheros.com>
Date: Wed, 20 Oct 2010 23:07:05 +0000 (-0700)
Subject: ath9k: rename rxflushlock to pcu_lock
X-Git-Tag: v2.6.36.2~260
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9011695dc05def294416c0f667cd59aaa8d8af9a;p=karo-tx-linux.git

ath9k: rename rxflushlock to pcu_lock

commit b79b33c4baf2532aac2c0924dce5a738099b888c upstream.

The real way to lock RX is to contend on the PCU
and reset, this will be fixed in the next patch but for
now just do the renames so that the next patch which changes
the locking order is crystal clear.

This is part of a series that will help resolve the bug:

https://bugzilla.kernel.org/show_bug.cgi?id=14624

For more details about this issue refer to:

http://marc.info/?l=linux-wireless&m=128629803703756&w=2

Cc: Ben Greear <greearb@candelatech.com>
Cc: Kyungwan Nam <kyungwan.nam@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 010bb9607b3e..ca8b8fa1139a 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -312,7 +312,7 @@ struct ath_rx {
 	u8 rxotherant;
 	u32 *rxlink;
 	unsigned int rxfilter;
-	spinlock_t rxflushlock;
+	spinlock_t pcu_lock;
 	spinlock_t rxbuflock;
 	struct list_head rxbuf;
 	struct ath_descdma rxdma;
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index fb9300e43a68..883a71b92ba0 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -587,7 +587,7 @@ void ath9k_tasklet(unsigned long data)
 		rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN);
 
 	if (status & rxmask) {
-		spin_lock_bh(&sc->rx.rxflushlock);
+		spin_lock_bh(&sc->rx.pcu_lock);
 
 		/* Check for high priority Rx first */
 		if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) &&
@@ -595,7 +595,7 @@ void ath9k_tasklet(unsigned long data)
 			ath_rx_tasklet(sc, 0, true);
 
 		ath_rx_tasklet(sc, 0, false);
-		spin_unlock_bh(&sc->rx.rxflushlock);
+		spin_unlock_bh(&sc->rx.pcu_lock);
 	}
 
 	if (status & ATH9K_INT_TX) {
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 2d8f4bd9054c..8cb228bb7553 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -310,7 +310,7 @@ int ath_rx_init(struct ath_softc *sc, int nbufs)
 	struct ath_buf *bf;
 	int error = 0;
 
-	spin_lock_init(&sc->rx.rxflushlock);
+	spin_lock_init(&sc->rx.pcu_lock);
 	sc->sc_flags &= ~SC_OP_RXFLUSH;
 	spin_lock_init(&sc->rx.rxbuflock);
 
@@ -522,13 +522,13 @@ bool ath_stoprecv(struct ath_softc *sc)
 
 void ath_flushrecv(struct ath_softc *sc)
 {
-	spin_lock_bh(&sc->rx.rxflushlock);
+	spin_lock_bh(&sc->rx.pcu_lock);
 	sc->sc_flags |= SC_OP_RXFLUSH;
 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
 		ath_rx_tasklet(sc, 1, true);
 	ath_rx_tasklet(sc, 1, false);
 	sc->sc_flags &= ~SC_OP_RXFLUSH;
-	spin_unlock_bh(&sc->rx.rxflushlock);
+	spin_unlock_bh(&sc->rx.pcu_lock);
 }
 
 static bool ath_beacon_dtim_pending_cab(struct sk_buff *skb)