Merge branch 'for-linus' into for-next

* for-linus: (635 commits)
  ALSA: usb-audio: Fix invalid volume resolution for Logitech HD Webcam c310
  ALSA: hda - Fix pin configurations for MacBook Air 4,2
  ALSA: usb-audio: work around Android accessory firmware bug
  ALSA: hda - Headset mic support for three more machines
  Linux 3.10-rc6
  smp.h: Use local_irq_{save,restore}() in !SMP version of on_each_cpu().
  powerpc: Fix missing/delayed calls to irq_work
  powerpc: Fix emulation of illegal instructions on PowerNV platform
  powerpc: Fix stack overflow crash in resume_kernel when ftracing
  snd_pcm_link(): fix a leak...
  use can_lookup() instead of direct checks of ->i_op->lookup
  move exit_task_namespaces() outside of exit_notify()
  fput: task_work_add() can fail if the caller has passed exit_task_work()
  xfs: don't shutdown log recovery on validation errors
  xfs: ensure btree root split sets blkno correctly
  xfs: fix implicit padding in directory and attr CRC formats
  xfs: don't emit v5 superblock warnings on write
  mei: me: clear interrupts on the resume path
  mei: nfc: fix nfc device freeing
  mei: init: Flush scheduled work before resetting the device
  ...

1 files changed, 17 insertions, 8 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 7f25da8444fe..15dfefcf2d0f 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1172,6 +1172,7 @@ u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan)
 static inline void ath9k_hw_set_dma(struct ath_hw *ah)
 {
 	struct ath_common *common = ath9k_hw_common(ah);
+	int txbuf_size;
 
 	ENABLE_REGWRITE_BUFFER(ah);
 
@@ -1225,13 +1226,17 @@ static inline void ath9k_hw_set_dma(struct ath_hw *ah)
 		 * So set the usable tx buf size also to half to
 		 * avoid data/delimiter underruns
 		 */
-		REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
-			  AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE);
-	} else if (!AR_SREV_9271(ah)) {
-		REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
-			  AR_PCU_TXBUF_CTRL_USABLE_SIZE);
+		txbuf_size = AR_9285_PCU_TXBUF_CTRL_USABLE_SIZE;
+	} else if (AR_SREV_9340_13_OR_LATER(ah)) {
+		/* Uses fewer entries for AR934x v1.3+ to prevent rx overruns */
+		txbuf_size = AR_9340_PCU_TXBUF_CTRL_USABLE_SIZE;
+	} else {
+		txbuf_size = AR_PCU_TXBUF_CTRL_USABLE_SIZE;
 	}
 
+	if (!AR_SREV_9271(ah))
+		REG_WRITE(ah, AR_PCU_TXBUF_CTRL, txbuf_size);
+
 	REGWRITE_BUFFER_FLUSH(ah);
 
 	if (AR_SREV_9300_20_OR_LATER(ah))
@@ -1306,9 +1311,13 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
 			AR_RTC_RC_COLD_RESET | AR_RTC_RC_WARM_RESET;
 	} else {
 		tmpReg = REG_READ(ah, AR_INTR_SYNC_CAUSE);
-		if (tmpReg &
-		    (AR_INTR_SYNC_LOCAL_TIMEOUT |
-		     AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {
+		if (AR_SREV_9340(ah))
+			tmpReg &= AR9340_INTR_SYNC_LOCAL_TIMEOUT;
+		else
+			tmpReg &= AR_INTR_SYNC_LOCAL_TIMEOUT |
+				  AR_INTR_SYNC_RADM_CPL_TIMEOUT;
+
+		if (tmpReg) {
 			u32 val;
 			REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);