ath9k: Make DMA warning in ath_stoprecv WARN_ON_ONCE.

This decreases spammage in the log.  A single line message
will still be printed, so users can be aware that problem
exists.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 8 insertions, 2 deletions

diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index dd78ad13ea0..272dfef2545 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -267,6 +267,7 @@ enum ATH_DEBUG {
         rtn;                                                    \
 })
 #define ATH_DBG_WARN(foo, arg...) WARN(foo, arg)
+#define ATH_DBG_WARN_ON_ONCE(foo) WARN_ON_ONCE(foo)
 
 #else
 
@@ -277,6 +278,7 @@ ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask,
         return 0;
 }
 #define ATH_DBG_WARN(foo, arg...) do {} while (0)
+#define ATH_DBG_WARN_ON_ONCE(foo) do {} while (0)
 
 #endif /* CONFIG_ATH_DEBUG */
 
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 70f3fa69c9a..3f8b2e32f36 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -528,8 +528,12 @@ bool ath_stoprecv(struct ath_softc *sc)
                 sc->rx.rxlink = NULL;
         spin_unlock_bh(&sc->rx.rxbuflock);
 
-        ATH_DBG_WARN(!stopped, "Could not stop RX, we could be "
-                     "confusing the DMA engine when we start RX up\n");
+        if (unlikely(!stopped)) {
+                ath_err(ath9k_hw_common(sc->sc_ah),
+                        "Could not stop RX, we could be "
+                        "confusing the DMA engine when we start RX up\n");
+                ATH_DBG_WARN_ON_ONCE(!stopped);
+        }
         return stopped;
 }