Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6

29 files changed, 130 insertions, 448 deletions

diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index a4c086f069b..e63b7c40d0e 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -1903,17 +1903,6 @@ accept:
 		rxs->noise = sc->ah->ah_noise_floor;
 		rxs->signal = rxs->noise + rs.rs_rssi;
 
-		/* An rssi of 35 indicates you should be able use
-		 * 54 Mbps reliably. A more elaborate scheme can be used
-		 * here but it requires a map of SNR/throughput for each
-		 * possible mode used */
-		rxs->qual = rs.rs_rssi * 100 / 35;
-
-		/* rssi can be more than 35 though, anything above that
-		 * should be considered at 100% */
-		if (rxs->qual > 100)
-			rxs->qual = 100;
-
 		rxs->antenna = rs.rs_antenna;
 		rxs->rate_idx = ath5k_hw_to_driver_rix(sc, rs.rs_rate);
 		rxs->flag |= ath5k_rx_decrypted(sc, ds, skb, &rs);
@@ -2381,6 +2370,9 @@ ath5k_init(struct ath5k_softc *sc)
 	 */
 	ath5k_stop_locked(sc);
 
+	/* Set PHY calibration interval */
+	ah->ah_cal_intval = ath5k_calinterval;
+
 	/*
 	 * The basic interface to setting the hardware in a good
 	 * state is ``reset''.  On return the hardware is known to
@@ -2408,10 +2400,6 @@ ath5k_init(struct ath5k_softc *sc)
 
 	/* Set ack to be sent at low bit-rates */
 	ath5k_hw_set_ack_bitrate_high(ah, false);
-
-	/* Set PHY calibration inteval */
-	ah->ah_cal_intval = ath5k_calinterval;
-
 	ret = 0;
 done:
 	mmiowb();
diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h
index 0c87771383f..e185479e295 100644
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -77,6 +77,9 @@
 #define ATH9K_TXERR_XTXOP          0x08
 #define ATH9K_TXERR_TIMER_EXPIRED  0x10
 #define ATH9K_TX_ACKED		   0x20
+#define ATH9K_TXERR_MASK						\
+	(ATH9K_TXERR_XRETRY | ATH9K_TXERR_FILT | ATH9K_TXERR_FIFO |	\
+	 ATH9K_TXERR_XTXOP | ATH9K_TXERR_TIMER_EXPIRED)
 
 #define ATH9K_TX_BA                0x01
 #define ATH9K_TX_PWRMGMT           0x02
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 9e68c1a8aef..996eb90263c 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -2514,6 +2514,9 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 		return; /* another wiphy still in use */
 	}
 
+	/* Ensure HW is awake when we try to shut it down. */
+	ath9k_ps_wakeup(sc);
+
 	if (ah->btcoex_hw.enabled) {
 		ath9k_hw_btcoex_disable(ah);
 		if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
@@ -2534,6 +2537,9 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 	/* disable HAL and put h/w to sleep */
 	ath9k_hw_disable(ah);
 	ath9k_hw_configpcipowersave(ah, 1, 1);
+	ath9k_ps_restore(sc);
+
+	/* Finally, put the chip in FULL SLEEP mode */
 	ath9k_setpower(sc, ATH9K_PM_FULL_SLEEP);
 
 	sc->sc_flags |= SC_OP_INVALID;
@@ -2647,8 +2653,10 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
 	if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) ||
 	    (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC) ||
 	    (sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
+		ath9k_ps_wakeup(sc);
 		ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
 		ath_beacon_return(sc, avp);
+		ath9k_ps_restore(sc);
 	}
 
 	sc->sc_flags &= ~SC_OP_BEACONS;
@@ -3097,15 +3105,21 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
 	case IEEE80211_AMPDU_RX_STOP:
 		break;
 	case IEEE80211_AMPDU_TX_START:
+		ath9k_ps_wakeup(sc);
 		ath_tx_aggr_start(sc, sta, tid, ssn);
 		ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+		ath9k_ps_restore(sc);
 		break;
 	case IEEE80211_AMPDU_TX_STOP:
+		ath9k_ps_wakeup(sc);
 		ath_tx_aggr_stop(sc, sta, tid);
 		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+		ath9k_ps_restore(sc);
 		break;
 	case IEEE80211_AMPDU_TX_OPERATIONAL:
+		ath9k_ps_wakeup(sc);
 		ath_tx_aggr_resume(sc, sta, tid);
+		ath9k_ps_restore(sc);
 		break;
 	default:
 		ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index 5321f735e5a..f7af5ea5475 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -96,7 +96,7 @@ static void ath_pci_bt_coex_prep(struct ath_common *common)
 	pci_write_config_byte(pdev, ATH_PCIE_CAP_LINK_CTRL, aspm);
 }
 
-const static struct ath_bus_ops ath_pci_bus_ops = {
+static const struct ath_bus_ops ath_pci_bus_ops = {
 	.read_cachesize = ath_pci_read_cachesize,
 	.cleanup = ath_pci_cleanup,
 	.eeprom_read = ath_pci_eeprom_read,
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 1e813bbf474..fa12b9060b0 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -2072,7 +2072,7 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
 				&txq->axq_q, lastbf->list.prev);
 
 		txq->axq_depth--;
-		txok = !(ds->ds_txstat.ts_status & ATH9K_TXERR_FILT);
+		txok = !(ds->ds_txstat.ts_status & ATH9K_TXERR_MASK);
 		txq->axq_tx_inprogress = false;
 		spin_unlock_bh(&txq->axq_lock);
 
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 027be275e03..88d1fd02d40 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -383,160 +383,44 @@ static inline
 	}
 }
 
-/* Check if a DMA region fits the device constraints.
- * Returns true, if the region is OK for usage with this device. */
-static inline bool b43_dma_address_ok(struct b43_dmaring *ring,
-				      dma_addr_t addr, size_t size)
-{
-	switch (ring->type) {
-	case B43_DMA_30BIT:
-		if ((u64)addr + size > (1ULL << 30))
-			return 0;
-		break;
-	case B43_DMA_32BIT:
-		if ((u64)addr + size > (1ULL << 32))
-			return 0;
-		break;
-	case B43_DMA_64BIT:
-		/* Currently we can't have addresses beyond
-		 * 64bit in the kernel. */
-		break;
-	}
-	return 1;
-}
-
-#define is_4k_aligned(addr)	(((u64)(addr) & 0x0FFFull) == 0)
-#define is_8k_aligned(addr)	(((u64)(addr) & 0x1FFFull) == 0)
-
-static void b43_unmap_and_free_ringmem(struct b43_dmaring *ring, void *base,
-				       dma_addr_t dmaaddr, size_t size)
-{
-	ssb_dma_unmap_single(ring->dev->dev, dmaaddr, size, DMA_TO_DEVICE);
-	free_pages((unsigned long)base, get_order(size));
-}
-
-static void * __b43_get_and_map_ringmem(struct b43_dmaring *ring,
-					dma_addr_t *dmaaddr, size_t size,
-					gfp_t gfp_flags)
-{
-	void *base;
-
-	base = (void *)__get_free_pages(gfp_flags, get_order(size));
-	if (!base)
-		return NULL;
-	memset(base, 0, size);
-	*dmaaddr = ssb_dma_map_single(ring->dev->dev, base, size,
-				      DMA_TO_DEVICE);
-	if (ssb_dma_mapping_error(ring->dev->dev, *dmaaddr)) {
-		free_pages((unsigned long)base, get_order(size));
-		return NULL;
-	}
-
-	return base;
-}
-
-static void * b43_get_and_map_ringmem(struct b43_dmaring *ring,
-				      dma_addr_t *dmaaddr, size_t size)
-{
-	void *base;
-
-	base = __b43_get_and_map_ringmem(ring, dmaaddr, size,
-					 GFP_KERNEL);
-	if (!base) {
-		b43err(ring->dev->wl, "Failed to allocate or map pages "
-		       "for DMA ringmemory\n");
-		return NULL;
-	}
-	if (!b43_dma_address_ok(ring, *dmaaddr, size)) {
-		/* The memory does not fit our device constraints.
-		 * Retry with GFP_DMA set to get lower memory. */
-		b43_unmap_and_free_ringmem(ring, base, *dmaaddr, size);
-		base = __b43_get_and_map_ringmem(ring, dmaaddr, size,
-						 GFP_KERNEL | GFP_DMA);
-		if (!base) {
-			b43err(ring->dev->wl, "Failed to allocate or map pages "
-			       "in the GFP_DMA region for DMA ringmemory\n");
-			return NULL;
-		}
-		if (!b43_dma_address_ok(ring, *dmaaddr, size)) {
-			b43_unmap_and_free_ringmem(ring, base, *dmaaddr, size);
-			b43err(ring->dev->wl, "Failed to allocate DMA "
-			       "ringmemory that fits device constraints\n");
-			return NULL;
-		}
-	}
-	/* We expect the memory to be 4k aligned, at least. */
-	if (B43_WARN_ON(!is_4k_aligned(*dmaaddr))) {
-		b43_unmap_and_free_ringmem(ring, base, *dmaaddr, size);
-		return NULL;
-	}
-
-	return base;
-}
-
 static int alloc_ringmemory(struct b43_dmaring *ring)
 {
-	unsigned int required;
-	void *base;
-	dma_addr_t dmaaddr;
-
-	/* There are several requirements to the descriptor ring memory:
-	 * - The memory region needs to fit the address constraints for the
-	 *   device (same as for frame buffers).
-	 * - For 30/32bit DMA devices, the descriptor ring must be 4k aligned.
-	 * - For 64bit DMA devices, the descriptor ring must be 8k aligned.
+	gfp_t flags = GFP_KERNEL;
+
+	/* The specs call for 4K buffers for 30- and 32-bit DMA with 4K
+	 * alignment and 8K buffers for 64-bit DMA with 8K alignment. Testing
+	 * has shown that 4K is sufficient for the latter as long as the buffer
+	 * does not cross an 8K boundary.
+	 *
+	 * For unknown reasons - possibly a hardware error - the BCM4311 rev
+	 * 02, which uses 64-bit DMA, needs the ring buffer in very low memory,
+	 * which accounts for the GFP_DMA flag below.
+	 *
+	 * The flags here must match the flags in free_ringmemory below!
 	 */
-
 	if (ring->type == B43_DMA_64BIT)
-		required = ring->nr_slots * sizeof(struct b43_dmadesc64);
-	else
-		required = ring->nr_slots * sizeof(struct b43_dmadesc32);
-	if (B43_WARN_ON(required > 0x1000))
+		flags |= GFP_DMA;
+	ring->descbase = ssb_dma_alloc_consistent(ring->dev->dev,
+						  B43_DMA_RINGMEMSIZE,
+						  &(ring->dmabase), flags);
+	if (!ring->descbase) {
+		b43err(ring->dev->wl, "DMA ringmemory allocation failed\n");
 		return -ENOMEM;
-
-	ring->alloc_descsize = 0x1000;
-	base = b43_get_and_map_ringmem(ring, &dmaaddr, ring->alloc_descsize);
-	if (!base)
-		return -ENOMEM;
-	ring->alloc_descbase = base;
-	ring->alloc_dmabase = dmaaddr;
-
-	if ((ring->type != B43_DMA_64BIT) || is_8k_aligned(dmaaddr)) {
-		/* We're on <=32bit DMA, or we already got 8k aligned memory.
-		 * That's all we need, so we're fine. */
-		ring->descbase = base;
-		ring->dmabase = dmaaddr;
-		return 0;
-	}
-	b43_unmap_and_free_ringmem(ring, base, dmaaddr, ring->alloc_descsize);
-
-	/* Ok, we failed at the 8k alignment requirement.
-	 * Try to force-align the memory region now. */
-	ring->alloc_descsize = 0x2000;
-	base = b43_get_and_map_ringmem(ring, &dmaaddr, ring->alloc_descsize);
-	if (!base)
-		return -ENOMEM;
-	ring->alloc_descbase = base;
-	ring->alloc_dmabase = dmaaddr;
-
-	if (is_8k_aligned(dmaaddr)) {
-		/* We're already 8k aligned. That Ok, too. */
-		ring->descbase = base;
-		ring->dmabase = dmaaddr;
-		return 0;
 	}
-	/* Force-align it to 8k */
-	ring->descbase = (void *)((u8 *)base + 0x1000);
-	ring->dmabase = dmaaddr + 0x1000;
-	B43_WARN_ON(!is_8k_aligned(ring->dmabase));
+	memset(ring->descbase, 0, B43_DMA_RINGMEMSIZE);
 
 	return 0;
 }
 
 static void free_ringmemory(struct b43_dmaring *ring)
 {
-	b43_unmap_and_free_ringmem(ring, ring->alloc_descbase,
-				   ring->alloc_dmabase, ring->alloc_descsize);
+	gfp_t flags = GFP_KERNEL;
+
+	if (ring->type == B43_DMA_64BIT)
+		flags |= GFP_DMA;
+
+	ssb_dma_free_consistent(ring->dev->dev, B43_DMA_RINGMEMSIZE,
+				ring->descbase, ring->dmabase, flags);
 }
 
 /* Reset the RX DMA channel */
@@ -646,14 +530,29 @@ static bool b43_dma_mapping_error(struct b43_dmaring *ring,
 	if (unlikely(ssb_dma_mapping_error(ring->dev->dev, addr)))
 		return 1;
 
-	if (!b43_dma_address_ok(ring, addr, buffersize)) {
-		/* We can't support this address. Unmap it again. */
-		unmap_descbuffer(ring, addr, buffersize, dma_to_device);
-		return 1;
+	switch (ring->type) {
+	case B43_DMA_30BIT:
+		if ((u64)addr + buffersize > (1ULL << 30))
+			goto address_error;
+		break;
+	case B43_DMA_32BIT:
+		if ((u64)addr + buffersize > (1ULL << 32))
+			goto address_error;
+		break;
+	case B43_DMA_64BIT:
+		/* Currently we can't have addresses beyond
+		 * 64bit in the kernel. */
+		break;
 	}
 
 	/* The address is OK. */
 	return 0;
+
+address_error:
+	/* We can't support this address. Unmap it again. */
+	unmap_descbuffer(ring, addr, buffersize, dma_to_device);
+
+	return 1;
 }
 
 static bool b43_rx_buffer_is_poisoned(struct b43_dmaring *ring, struct sk_buff *skb)
@@ -715,9 +614,6 @@ static int setup_rx_descbuffer(struct b43_dmaring *ring,
 	meta->dmaaddr = dmaaddr;
 	ring->ops->fill_descriptor(ring, desc, dmaaddr,
 				   ring->rx_buffersize, 0, 0, 0);
-	ssb_dma_sync_single_for_device(ring->dev->dev,
-				       ring->alloc_dmabase,
-				       ring->alloc_descsize, DMA_TO_DEVICE);
 
 	return 0;
 }
@@ -1354,9 +1250,6 @@ static int dma_tx_fragment(struct b43_dmaring *ring,
 	}
 	/* Now transfer the whole frame. */
 	wmb();
-	ssb_dma_sync_single_for_device(ring->dev->dev,
-				       ring->alloc_dmabase,
-				       ring->alloc_descsize, DMA_TO_DEVICE);
 	ops->poke_tx(ring, next_slot(ring, slot));
 	return 0;
 
diff --git a/drivers/net/wireless/b43/dma.h b/drivers/net/wireless/b43/dma.h
index e607b392314..f7ab37c4cdb 100644
--- a/drivers/net/wireless/b43/dma.h
+++ b/drivers/net/wireless/b43/dma.h
@@ -157,6 +157,7 @@ struct b43_dmadesc_generic {
 } __attribute__ ((__packed__));
 
 /* Misc DMA constants */
+#define B43_DMA_RINGMEMSIZE		PAGE_SIZE
 #define B43_DMA0_RX_FRAMEOFFSET		30
 
 /* DMA engine tuning knobs */
@@ -246,12 +247,6 @@ struct b43_dmaring {
 	/* The QOS priority assigned to this ring. Only used for TX rings.
 	 * This is the mac80211 "queue" value. */
 	u8 queue_prio;
-	/* Pointers and size of the originally allocated and mapped memory
-	 * region for the descriptor ring. */
-	void *alloc_descbase;
-	dma_addr_t alloc_dmabase;
-	unsigned int alloc_descsize;
-	/* Pointer to our wireless device. */
 	struct b43_wldev *dev;
 #ifdef CONFIG_B43_DEBUG
 	/* Maximum number of used slots. */
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index e413bd35bc4..234891d8cc1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -681,19 +681,13 @@ static void iwl3945_rx_reply_rx(struct iwl_priv *priv,
 		snr = rx_stats_sig_avg / rx_stats_noise_diff;
 		rx_status.noise = rx_status.signal -
 					iwl3945_calc_db_from_ratio(snr);
-		rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal,
-							 rx_status.noise);
-
-	/* If noise info not available, calculate signal quality indicator (%)
-	 *   using just the dBm signal level. */
 	} else {
 		rx_status.noise = priv->last_rx_noise;
-		rx_status.qual = iwl3945_calc_sig_qual(rx_status.signal, 0);
 	}
 
 
-	IWL_DEBUG_STATS(priv, "Rssi %d noise %d qual %d sig_avg %d noise_diff %d\n",
-			rx_status.signal, rx_status.noise, rx_status.qual,
+	IWL_DEBUG_STATS(priv, "Rssi %d noise %d sig_avg %d noise_diff %d\n",
+			rx_status.signal, rx_status.noise,
 			rx_stats_sig_avg, rx_stats_noise_diff);
 
 	header = (struct ieee80211_hdr *)IWL_RX_DATA(pkt);
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index ecc23ec1f6a..531fa125f5a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -222,7 +222,6 @@ struct iwl3945_ibss_seq {
  *
  *****************************************************************************/
 extern int iwl3945_calc_db_from_ratio(int sig_ratio);
-extern int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm);
 extern void iwl3945_rx_replenish(void *data);
 extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index fe511cbf012..b93e4915819 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -150,7 +150,7 @@ static s32 expected_tpt_mimo3_40MHz[4][IWL_RATE_COUNT] = {
 };
 
 /* mbps, mcs */
-const static struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = {
+static const struct iwl_rate_mcs_info iwl_rate_mcs[IWL_RATE_COUNT] = {
 	{  "1", "BPSK DSSS"},
 	{  "2", "QPSK DSSS"},
 	{"5.5", "BPSK CCK"},
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index f5c87e72660..6f36b6e79f5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -650,47 +650,6 @@ void iwl_reply_statistics(struct iwl_priv *priv,
 }
 EXPORT_SYMBOL(iwl_reply_statistics);
 
-#define PERFECT_RSSI (-20) /* dBm */
-#define WORST_RSSI (-95)   /* dBm */
-#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
-
-/* Calculate an indication of rx signal quality (a percentage, not dBm!).
- * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
- *   about formulas used below. */
-static int iwl_calc_sig_qual(int rssi_dbm, int noise_dbm)
-{
-	int sig_qual;
-	int degradation = PERFECT_RSSI - rssi_dbm;
-
-	/* If we get a noise measurement, use signal-to-noise ratio (SNR)
-	 * as indicator; formula is (signal dbm - noise dbm).
-	 * SNR at or above 40 is a great signal (100%).
-	 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
-	 * Weakest usable signal is usually 10 - 15 dB SNR. */
-	if (noise_dbm) {
-		if (rssi_dbm - noise_dbm >= 40)
-			return 100;
-		else if (rssi_dbm < noise_dbm)
-			return 0;
-		sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
-
-	/* Else use just the signal level.
-	 * This formula is a least squares fit of data points collected and
-	 *   compared with a reference system that had a percentage (%) display
-	 *   for signal quality. */
-	} else
-		sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
-			    (15 * RSSI_RANGE + 62 * degradation)) /
-			   (RSSI_RANGE * RSSI_RANGE);
-
-	if (sig_qual > 100)
-		sig_qual = 100;
-	else if (sig_qual < 1)
-		sig_qual = 0;
-
-	return sig_qual;
-}
-
 /* Calc max signal level (dBm) among 3 possible receivers */
 static inline int iwl_calc_rssi(struct iwl_priv *priv,
 				struct iwl_rx_phy_res *rx_resp)
@@ -1101,11 +1060,8 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
 	if (iwl_is_associated(priv) &&
 	    !test_bit(STATUS_SCANNING, &priv->status)) {
 		rx_status.noise = priv->last_rx_noise;
-		rx_status.qual = iwl_calc_sig_qual(rx_status.signal,
-							 rx_status.noise);
 	} else {
 		rx_status.noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
-		rx_status.qual = iwl_calc_sig_qual(rx_status.signal, 0);
 	}
 
 	/* Reset beacon noise level if not associated. */
@@ -1118,8 +1074,8 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
 		iwl_dbg_report_frame(priv, phy_res, len, header, 1);
 #endif
 	iwl_dbg_log_rx_data_frame(priv, len, header);
-	IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, qual %d, TSF %llu\n",
-		rx_status.signal, rx_status.noise, rx_status.qual,
+	IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, noise %d, TSF %llu\n",
+		rx_status.signal, rx_status.noise,
 		(unsigned long long)rx_status.mactime);
 
 	/*
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index e5d8fa38432..f8e4e4b18d0 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -1299,47 +1299,6 @@ int iwl3945_calc_db_from_ratio(int sig_ratio)
 	return (int)ratio2dB[sig_ratio];
 }
 
-#define PERFECT_RSSI (-20) /* dBm */
-#define WORST_RSSI (-95)   /* dBm */
-#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
-
-/* Calculate an indication of rx signal quality (a percentage, not dBm!).
- * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
- *   about formulas used below. */
-int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
-{
-	int sig_qual;
-	int degradation = PERFECT_RSSI - rssi_dbm;
-
-	/* If we get a noise measurement, use signal-to-noise ratio (SNR)
-	 * as indicator; formula is (signal dbm - noise dbm).
-	 * SNR at or above 40 is a great signal (100%).
-	 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
-	 * Weakest usable signal is usually 10 - 15 dB SNR. */
-	if (noise_dbm) {
-		if (rssi_dbm - noise_dbm >= 40)
-			return 100;
-		else if (rssi_dbm < noise_dbm)
-			return 0;
-		sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
-
-	/* Else use just the signal level.
-	 * This formula is a least squares fit of data points collected and
-	 *   compared with a reference system that had a percentage (%) display
-	 *   for signal quality. */
-	} else
-		sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
-			    (15 * RSSI_RANGE + 62 * degradation)) /
-			   (RSSI_RANGE * RSSI_RANGE);
-
-	if (sig_qual > 100)
-		sig_qual = 100;
-	else if (sig_qual < 1)
-		sig_qual = 0;
-
-	return sig_qual;
-}
-
 /**
  * iwl3945_rx_handle - Main entry function for receiving responses from uCode
  *
diff --git a/drivers/net/wireless/iwmc3200wifi/iwm.h b/drivers/net/wireless/iwmc3200wifi/iwm.h
index 79ffa3b98d7..842811142be 100644
--- a/drivers/net/wireless/iwmc3200wifi/iwm.h
+++ b/drivers/net/wireless/iwmc3200wifi/iwm.h
@@ -268,7 +268,7 @@ struct iwm_priv {
 
 	struct sk_buff_head rx_list;
 	struct list_head rx_tickets;
-	struct list_head rx_packets[IWM_RX_ID_HASH];
+	struct list_head rx_packets[IWM_RX_ID_HASH + 1];
 	struct workqueue_struct *rx_wq;
 	struct work_struct rx_worker;
 
diff --git a/drivers/net/wireless/libertas/scan.c b/drivers/net/wireless/libertas/scan.c
index c6a6c042b82..b0b1c784150 100644
--- a/drivers/net/wireless/libertas/scan.c
+++ b/drivers/net/wireless/libertas/scan.c
@@ -567,11 +567,8 @@ int lbs_scan_networks(struct lbs_private *priv, int full_scan)
 	chan_count = lbs_scan_create_channel_list(priv, chan_list);
 
 	netif_stop_queue(priv->dev);
-	netif_carrier_off(priv->dev);
-	if (priv->mesh_dev) {
+	if (priv->mesh_dev)
 		netif_stop_queue(priv->mesh_dev);
-		netif_carrier_off(priv->mesh_dev);
-	}
 
 	/* Prepare to continue an interrupted scan */
 	lbs_deb_scan("chan_count %d, scan_channel %d\n",
@@ -635,16 +632,13 @@ out2:
 	priv->scan_channel = 0;
 
 out:
-	if (priv->connect_status == LBS_CONNECTED) {
-		netif_carrier_on(priv->dev);
-		if (!priv->tx_pending_len)
-			netif_wake_queue(priv->dev);
-	}
-	if (priv->mesh_dev && (priv->mesh_connect_status == LBS_CONNECTED)) {
-		netif_carrier_on(priv->mesh_dev);
-		if (!priv->tx_pending_len)
-			netif_wake_queue(priv->mesh_dev);
-	}
+	if (priv->connect_status == LBS_CONNECTED && !priv->tx_pending_len)
+		netif_wake_queue(priv->dev);
+
+	if (priv->mesh_dev && (priv->mesh_connect_status == LBS_CONNECTED) &&
+	    !priv->tx_pending_len)
+		netif_wake_queue(priv->mesh_dev);
+
 	kfree(chan_list);
 
 	lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
index 019431d2f8a..26a1abd5bb0 100644
--- a/drivers/net/wireless/libertas_tf/main.c
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -495,7 +495,6 @@ int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
 	stats.band = IEEE80211_BAND_2GHZ;
 	stats.signal = prxpd->snr;
 	stats.noise = prxpd->nf;
-	stats.qual = prxpd->snr - prxpd->nf;
 	/* Marvell rate index has a hole at value 4 */
 	if (prxpd->rx_rate > 4)
 		--prxpd->rx_rate;
diff --git a/drivers/net/wireless/orinoco/wext.c b/drivers/net/wireless/orinoco/wext.c
index 7698fdd6a3a..31ca241f775 100644
--- a/drivers/net/wireless/orinoco/wext.c
+++ b/drivers/net/wireless/orinoco/wext.c
@@ -23,7 +23,7 @@
 #define MAX_RID_LEN 1024
 
 /* Helper routine to record keys
- * Do not call from interrupt context */
+ * It is called under orinoco_lock so it may not sleep */
 static int orinoco_set_key(struct orinoco_private *priv, int index,
 			   enum orinoco_alg alg, const u8 *key, int key_len,
 			   const u8 *seq, int seq_len)
@@ -32,14 +32,14 @@ static int orinoco_set_key(struct orinoco_private *priv, int index,
 	kzfree(priv->keys[index].seq);
 
 	if (key_len) {
-		priv->keys[index].key = kzalloc(key_len, GFP_KERNEL);
+		priv->keys[index].key = kzalloc(key_len, GFP_ATOMIC);
 		if (!priv->keys[index].key)
 			goto nomem;
 	} else
 		priv->keys[index].key = NULL;
 
 	if (seq_len) {
-		priv->keys[index].seq = kzalloc(seq_len, GFP_KERNEL);
+		priv->keys[index].seq = kzalloc(seq_len, GFP_ATOMIC);
 		if (!priv->keys[index].seq)
 			goto free_key;
 	} else
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index af85d18cdbe..ab95346cf6a 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -922,6 +922,7 @@ static struct usb_device_id rt2800usb_device_table[] = {
 	{ USB_DEVICE(0x1737, 0x0070), USB_DEVICE_DATA(&rt2800usb_ops) },
 	{ USB_DEVICE(0x1737, 0x0071), USB_DEVICE_DATA(&rt2800usb_ops) },
 	{ USB_DEVICE(0x1737, 0x0077), USB_DEVICE_DATA(&rt2800usb_ops) },
+	{ USB_DEVICE(0x1737, 0x0079), USB_DEVICE_DATA(&rt2800usb_ops) },
 	/* Logitec */
 	{ USB_DEVICE(0x0789, 0x0162), USB_DEVICE_DATA(&rt2800usb_ops) },
 	{ USB_DEVICE(0x0789, 0x0163), USB_DEVICE_DATA(&rt2800usb_ops) },
diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c
index a1a3dd15c66..8a40a143998 100644
--- a/drivers/net/wireless/rtl818x/rtl8180_dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c
@@ -132,7 +132,6 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
 
 			rx_status.antenna = (flags2 >> 15) & 1;
 			/* TODO: improve signal/rssi reporting */
-			rx_status.qual = flags2 & 0xFF;
 			rx_status.signal = (flags2 >> 8) & 0x7F;
 			/* XXX: is this correct? */
 			rx_status.rate_idx = (flags >> 20) & 0xF;
diff --git a/drivers/net/wireless/wl12xx/wl1251_boot.c b/drivers/net/wireless/wl12xx/wl1251_boot.c
index 2e733e7bdfd..28a80867408 100644
--- a/drivers/net/wireless/wl12xx/wl1251_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1251_boot.c
@@ -256,7 +256,7 @@ int wl1251_boot_run_firmware(struct wl1251 *wl)
 		}
 	}
 
-	if (loop >= INIT_LOOP) {
+	if (loop > INIT_LOOP) {
 		wl1251_error("timeout waiting for the hardware to "
 			     "complete initialization");
 		return -EIO;
diff --git a/drivers/net/wireless/wl12xx/wl1271_cmd.c b/drivers/net/wireless/wl12xx/wl1271_cmd.c
index 886a9bc39cc..c3385b3d246 100644
--- a/drivers/net/wireless/wl12xx/wl1271_cmd.c
+++ b/drivers/net/wireless/wl12xx/wl1271_cmd.c
@@ -777,7 +777,7 @@ out:
 	return ret;
 }
 
-static int wl1271_build_basic_rates(char *rates, u8 band)
+static int wl1271_build_basic_rates(u8 *rates, u8 band)
 {
 	u8 index = 0;
 
@@ -804,7 +804,7 @@ static int wl1271_build_basic_rates(char *rates, u8 band)
 	return index;
 }
 
-static int wl1271_build_extended_rates(char *rates, u8 band)
+static int wl1271_build_extended_rates(u8 *rates, u8 band)
 {
 	u8 index = 0;
 
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
index dfa1b9bc22c..7ca95c414fa 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.c
+++ b/drivers/net/wireless/zd1211rw/zd_chip.c
@@ -1325,151 +1325,11 @@ int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates)
 	return r;
 }
 
-static int ofdm_qual_db(u8 status_quality, u8 zd_rate, unsigned int size)
-{
-	static const u16 constants[] = {
-		715, 655, 585, 540, 470, 410, 360, 315,
-		270, 235, 205, 175, 150, 125, 105,  85,
-		 65,  50,  40,  25,  15
-	};
-
-	int i;
-	u32 x;
-
-	/* It seems that their quality parameter is somehow per signal
-	 * and is now transferred per bit.
-	 */
-	switch (zd_rate) {
-	case ZD_OFDM_RATE_6M:
-	case ZD_OFDM_RATE_12M:
-	case ZD_OFDM_RATE_24M:
-		size *= 2;
-		break;
-	case ZD_OFDM_RATE_9M:
-	case ZD_OFDM_RATE_18M:
-	case ZD_OFDM_RATE_36M:
-	case ZD_OFDM_RATE_54M:
-		size *= 4;
-		size /= 3;
-		break;
-	case ZD_OFDM_RATE_48M:
-		size *= 3;
-		size /= 2;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	x = (10000 * status_quality)/size;
-	for (i = 0; i < ARRAY_SIZE(constants); i++) {
-		if (x > constants[i])
-			break;
-	}
-
-	switch (zd_rate) {
-	case ZD_OFDM_RATE_6M:
-	case ZD_OFDM_RATE_9M:
-		i += 3;
-		break;
-	case ZD_OFDM_RATE_12M:
-	case ZD_OFDM_RATE_18M:
-		i += 5;
-		break;
-	case ZD_OFDM_RATE_24M:
-	case ZD_OFDM_RATE_36M:
-		i += 9;
-		break;
-	case ZD_OFDM_RATE_48M:
-	case ZD_OFDM_RATE_54M:
-		i += 15;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return i;
-}
-
-static int ofdm_qual_percent(u8 status_quality, u8 zd_rate, unsigned int size)
-{
-	int r;
-
-	r = ofdm_qual_db(status_quality, zd_rate, size);
-	ZD_ASSERT(r >= 0);
-	if (r < 0)
-		r = 0;
-
-	r = (r * 100)/29;
-	return r <= 100 ? r : 100;
-}
-
-static unsigned int log10times100(unsigned int x)
-{
-	static const u8 log10[] = {
-		  0,
-		  0,   30,   47,   60,   69,   77,   84,   90,   95,  100,
-		104,  107,  111,  114,  117,  120,  123,  125,  127,  130,
-		132,  134,  136,  138,  139,  141,  143,  144,  146,  147,
-		149,  150,  151,  153,  154,  155,  156,  157,  159,  160,
-		161,  162,  163,  164,  165,  166,  167,  168,  169,  169,
-		170,  171,  172,  173,  174,  174,  175,  176,  177,  177,
-		178,  179,  179,  180,  181,  181,  182,  183,  183,  184,
-		185,  185,  186,  186,  187,  188,  188,  189,  189,  190,
-		190,  191,  191,  192,  192,  193,  193,  194,  194,  195,
-		195,  196,  196,  197,  197,  198,  198,  199,  199,  200,
-		200,  200,  201,  201,  202,  202,  202,  203,  203,  204,
-		204,  204,  205,  205,  206,  206,  206,  207,  207,  207,
-		208,  208,  208,  209,  209,  210,  210,  210,  211,  211,
-		211,  212,  212,  212,  213,  213,  213,  213,  214,  214,
-		214,  215,  215,  215,  216,  216,  216,  217,  217,  217,
-		217,  218,  218,  218,  219,  219,  219,  219,  220,  220,
-		220,  220,  221,  221,  221,  222,  222,  222,  222,  223,
-		223,  223,  223,  224,  224,  224,  224,
-	};
-
-	return x < ARRAY_SIZE(log10) ? log10[x] : 225;
-}
-
-enum {
-	MAX_CCK_EVM_DB = 45,
-};
-
-static int cck_evm_db(u8 status_quality)
-{
-	return (20 * log10times100(status_quality)) / 100;
-}
-
-static int cck_snr_db(u8 status_quality)
-{
-	int r = MAX_CCK_EVM_DB - cck_evm_db(status_quality);
-	ZD_ASSERT(r >= 0);
-	return r;
-}
-
-static int cck_qual_percent(u8 status_quality)
-{
-	int r;
-
-	r = cck_snr_db(status_quality);
-	r = (100*r)/17;
-	return r <= 100 ? r : 100;
-}
-
 static inline u8 zd_rate_from_ofdm_plcp_header(const void *rx_frame)
 {
 	return ZD_OFDM | zd_ofdm_plcp_header_rate(rx_frame);
 }
 
-u8 zd_rx_qual_percent(const void *rx_frame, unsigned int size,
-	              const struct rx_status *status)
-{
-	return (status->frame_status&ZD_RX_OFDM) ?
-		ofdm_qual_percent(status->signal_quality_ofdm,
-				  zd_rate_from_ofdm_plcp_header(rx_frame),
-			          size) :
-		cck_qual_percent(status->signal_quality_cck);
-}
-
 /**
  * zd_rx_rate - report zd-rate
  * @rx_frame - received frame
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.h b/drivers/net/wireless/zd1211rw/zd_chip.h
index 9fd8f3508d6..f8bbf7d302a 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.h
+++ b/drivers/net/wireless/zd1211rw/zd_chip.h
@@ -929,9 +929,6 @@ static inline int zd_get_beacon_interval(struct zd_chip *chip, u32 *interval)
 
 struct rx_status;
 
-u8 zd_rx_qual_percent(const void *rx_frame, unsigned int size,
-	               const struct rx_status *status);
-
 u8 zd_rx_rate(const void *rx_frame, const struct rx_status *status);
 
 struct zd_mc_hash {
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index cf51e8f8174..8ebf5c33955 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -828,9 +828,6 @@ int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length)
 	stats.freq = zd_channels[_zd_chip_get_channel(&mac->chip) - 1].center_freq;
 	stats.band = IEEE80211_BAND_2GHZ;
 	stats.signal = status->signal_strength;
-	stats.qual = zd_rx_qual_percent(buffer,
-		                          length - sizeof(struct rx_status),
-		                          status);
 
 	rate = zd_rx_rate(buffer, status);
 
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 538d6b76188..0bf36975227 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -547,7 +547,6 @@ enum mac80211_rx_flags {
  *	unspecified depending on the hardware capabilities flags
  *	@IEEE80211_HW_SIGNAL_*
  * @noise: noise when receiving this frame, in dBm.
- * @qual: overall signal quality indication, in percent (0-100).
  * @antenna: antenna used
  * @rate_idx: index of data rate into band's supported rates or MCS index if
  *	HT rates are use (RX_FLAG_HT)
@@ -559,7 +558,6 @@ struct ieee80211_rx_status {
 	int freq;
 	int signal;
 	int noise;
-	int __deprecated qual;
 	int antenna;
 	int rate_idx;
 	int flag;
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 10d13856f86..1f2db647bb5 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -382,6 +382,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
 struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 					u8 *bssid,u8 *addr, u32 supp_rates)
 {
+	struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
 	struct ieee80211_local *local = sdata->local;
 	struct sta_info *sta;
 	int band = local->hw.conf.channel->band;
@@ -397,6 +398,9 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
 		return NULL;
 	}
 
+	if (ifibss->state == IEEE80211_IBSS_MLME_SEARCH)
+		return NULL;
+
 	if (compare_ether_addr(bssid, sdata->u.ibss.bssid))
 		return NULL;
 
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 8834cc93c71..27ceaefd7bc 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1419,6 +1419,10 @@ static bool need_dynamic_ps(struct ieee80211_local *local)
 	if (!local->ps_sdata)
 		return false;
 
+	/* No point if we're going to suspend */
+	if (local->quiescing)
+		return false;
+
 	return true;
 }
 
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 78a6e924c7e..dc76267e436 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1039,7 +1039,19 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 
 	/* restart hardware */
 	if (local->open_count) {
+		/*
+		 * Upon resume hardware can sometimes be goofy due to
+		 * various platform / driver / bus issues, so restarting
+		 * the device may at times not work immediately. Propagate
+		 * the error.
+		 */
 		res = drv_start(local);
+		if (res) {
+			WARN(local->suspended, "Harware became unavailable "
+			     "upon resume. This is could be a software issue"
+			     "prior to suspend or a harware issue\n");
+			return res;
+		}
 
 		ieee80211_led_radio(local, true);
 	}
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 1001db4912f..82e6002c8d6 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -93,7 +93,18 @@ void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len)
 			}
 		}
 
-		WARN_ON(!bss);
+		/*
+		 * We might be coming here because the driver reported
+		 * a successful association at the same time as the
+		 * user requested a deauth. In that case, we will have
+		 * removed the BSS from the auth_bsses list due to the
+		 * deauth request when the assoc response makes it. If
+		 * the two code paths acquire the lock the other way
+		 * around, that's just the standard situation of a
+		 * deauth being requested while connected.
+		 */
+		if (!bss)
+			goto out;
 	} else if (wdev->conn) {
 		cfg80211_sme_failed_assoc(wdev);
 		/*
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 12dfa62aad1..0c2cbbebca9 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -601,7 +601,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
 	struct cfg80211_registered_device *rdev;
 	struct wiphy *wiphy;
 	struct iw_scan_req *wreq = NULL;
-	struct cfg80211_scan_request *creq;
+	struct cfg80211_scan_request *creq = NULL;
 	int i, err, n_channels = 0;
 	enum ieee80211_band band;
 
@@ -694,8 +694,10 @@ int cfg80211_wext_siwscan(struct net_device *dev,
 	/* translate "Scan for SSID" request */
 	if (wreq) {
 		if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
-			if (wreq->essid_len > IEEE80211_MAX_SSID_LEN)
-				return -EINVAL;
+			if (wreq->essid_len > IEEE80211_MAX_SSID_LEN) {
+				err = -EINVAL;
+				goto out;
+			}
 			memcpy(creq->ssids[0].ssid, wreq->essid, wreq->essid_len);
 			creq->ssids[0].ssid_len = wreq->essid_len;
 		}
@@ -707,12 +709,15 @@ int cfg80211_wext_siwscan(struct net_device *dev,
 	err = rdev->ops->scan(wiphy, dev, creq);
 	if (err) {
 		rdev->scan_req = NULL;
-		kfree(creq);
+		/* creq will be freed below */
 	} else {
 		nl80211_send_scan_start(rdev, dev);
+		/* creq now owned by driver */
+		creq = NULL;
 		dev_hold(dev);
 	}
  out:
+	kfree(creq);
 	cfg80211_unlock_rdev(rdev);
 	return err;
 }