20 files changed, 116 insertions, 41 deletions

diff --git a/drivers/bcma/Kconfig b/drivers/bcma/Kconfig
index d7b56a88c9f4..8b4221cfd118 100644
--- a/drivers/bcma/Kconfig
+++ b/drivers/bcma/Kconfig
@@ -67,8 +67,7 @@ config BCMA_DRIVER_GMAC_CMN
 
 config BCMA_DRIVER_GPIO
         bool "BCMA GPIO driver"
-        depends on BCMA
-        select GPIOLIB
+        depends on BCMA && GPIOLIB
         help
           Driver to provide access to the GPIO pins of the bcma bus.
 
diff --git a/drivers/bcma/driver_chipcommon_sflash.c b/drivers/bcma/driver_chipcommon_sflash.c
index 63e688393825..1e694db4532d 100644
--- a/drivers/bcma/driver_chipcommon_sflash.c
+++ b/drivers/bcma/driver_chipcommon_sflash.c
@@ -35,7 +35,7 @@ static struct bcma_sflash_tbl_e bcma_sflash_st_tbl[] = {
         { "M25P40", 0x12, 0x10000, 8, },
 
         { "M25P16", 0x14, 0x10000, 32, },
-        { "M25P32", 0x14, 0x10000, 64, },
+        { "M25P32", 0x15, 0x10000, 64, },
         { "M25P64", 0x16, 0x10000, 128, },
         { "M25FL128", 0x17, 0x10000, 256, },
         { 0 },
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 653487dc7b52..87fa5919c455 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -1821,6 +1821,11 @@ static int nv_alloc_rx(struct net_device *dev)
                                                              skb->data,
                                                              skb_tailroom(skb),
                                                              PCI_DMA_FROMDEVICE);
+                        if (pci_dma_mapping_error(np->pci_dev,
+                                                  np->put_rx_ctx->dma)) {
+                                kfree_skb(skb);
+                                goto packet_dropped;
+                        }
                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
                         np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
                         wmb();
@@ -1830,6 +1835,7 @@ static int nv_alloc_rx(struct net_device *dev)
                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
                                 np->put_rx_ctx = np->first_rx_ctx;
                 } else {
+packet_dropped:
                         u64_stats_update_begin(&np->swstats_rx_syncp);
                         np->stat_rx_dropped++;
                         u64_stats_update_end(&np->swstats_rx_syncp);
@@ -1856,6 +1862,11 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
                                                              skb->data,
                                                              skb_tailroom(skb),
                                                              PCI_DMA_FROMDEVICE);
+                        if (pci_dma_mapping_error(np->pci_dev,
+                                                  np->put_rx_ctx->dma)) {
+                                kfree_skb(skb);
+                                goto packet_dropped;
+                        }
                         np->put_rx_ctx->dma_len = skb_tailroom(skb);
                         np->put_rx.ex->bufhigh = cpu_to_le32(dma_high(np->put_rx_ctx->dma));
                         np->put_rx.ex->buflow = cpu_to_le32(dma_low(np->put_rx_ctx->dma));
@@ -1866,6 +1877,7 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
                         if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
                                 np->put_rx_ctx = np->first_rx_ctx;
                 } else {
+packet_dropped:
                         u64_stats_update_begin(&np->swstats_rx_syncp);
                         np->stat_rx_dropped++;
                         u64_stats_update_end(&np->swstats_rx_syncp);
@@ -2217,6 +2229,15 @@ static netdev_tx_t nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
                                                 PCI_DMA_TODEVICE);
+                if (pci_dma_mapping_error(np->pci_dev,
+                                          np->put_tx_ctx->dma)) {
+                        /* on DMA mapping error - drop the packet */
+                        kfree_skb(skb);
+                        u64_stats_update_begin(&np->swstats_tx_syncp);
+                        np->stat_tx_dropped++;
+                        u64_stats_update_end(&np->swstats_tx_syncp);
+                        return NETDEV_TX_OK;
+                }
                 np->put_tx_ctx->dma_len = bcnt;
                 np->put_tx_ctx->dma_single = 1;
                 put_tx->buf = cpu_to_le32(np->put_tx_ctx->dma);
@@ -2337,6 +2358,15 @@ static netdev_tx_t nv_start_xmit_optimized(struct sk_buff *skb,
                 bcnt = (size > NV_TX2_TSO_MAX_SIZE) ? NV_TX2_TSO_MAX_SIZE : size;
                 np->put_tx_ctx->dma = pci_map_single(np->pci_dev, skb->data + offset, bcnt,
                                                 PCI_DMA_TODEVICE);
+                if (pci_dma_mapping_error(np->pci_dev,
+                                          np->put_tx_ctx->dma)) {
+                        /* on DMA mapping error - drop the packet */
+                        kfree_skb(skb);
+                        u64_stats_update_begin(&np->swstats_tx_syncp);
+                        np->stat_tx_dropped++;
+                        u64_stats_update_end(&np->swstats_tx_syncp);
+                        return NETDEV_TX_OK;
+                }
                 np->put_tx_ctx->dma_len = bcnt;
                 np->put_tx_ctx->dma_single = 1;
                 put_tx->bufhigh = cpu_to_le32(dma_high(np->put_tx_ctx->dma));
@@ -5003,6 +5033,11 @@ static int nv_loopback_test(struct net_device *dev)
         test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
                                        skb_tailroom(tx_skb),
                                        PCI_DMA_FROMDEVICE);
+        if (pci_dma_mapping_error(np->pci_dev,
+                                  test_dma_addr)) {
+                dev_kfree_skb_any(tx_skb);
+                goto out;
+        }
         pkt_data = skb_put(tx_skb, pkt_len);
         for (i = 0; i < pkt_len; i++)
                 pkt_data[i] = (u8)(i & 0xff);
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 91d7cb9728eb..6a1ca500e612 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -458,6 +458,7 @@ static const struct usb_device_id products[] = {
         {QMI_FIXED_INTF(0x1199, 0x68a2, 8)},    /* Sierra Wireless MC7710 in QMI mode */
         {QMI_FIXED_INTF(0x1199, 0x68a2, 19)},   /* Sierra Wireless MC7710 in QMI mode */
         {QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
+        {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)},    /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
 
         /* 4. Gobi 1000 devices */
         {QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},    /* Acer Gobi Modem Device */
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 40f2cc135a49..656230e0d18c 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1191,6 +1191,7 @@ static void vxlan_setup(struct net_device *dev)
 
         dev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
         dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
+        dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
 
         spin_lock_init(&vxlan->hash_lock);
 
diff --git a/drivers/net/wireless/ath/ath9k/Kconfig b/drivers/net/wireless/ath/ath9k/Kconfig
index 5fc15bf8be09..7647ed6b73d7 100644
--- a/drivers/net/wireless/ath/ath9k/Kconfig
+++ b/drivers/net/wireless/ath/ath9k/Kconfig
@@ -2,6 +2,7 @@ config ATH9K_HW
         tristate
 config ATH9K_COMMON
         tristate
+        select ATH_COMMON
 config ATH9K_DFS_DEBUGFS
         def_bool y
         depends on ATH9K_DEBUGFS && ATH9K_DFS_CERTIFIED
@@ -17,7 +18,6 @@ config ATH9K_BTCOEX_SUPPORT
 config ATH9K
         tristate "Atheros 802.11n wireless cards support"
         depends on MAC80211
-        select ATH_COMMON
         select ATH9K_HW
         select MAC80211_LEDS
         select LEDS_CLASS
@@ -56,7 +56,8 @@ config ATH9K_AHB
 
 config ATH9K_DEBUGFS
         bool "Atheros ath9k debugging"
-        depends on ATH9K && DEBUG_FS
+        depends on ATH9K
+        select MAC80211_DEBUGFS
         ---help---
           Say Y, if you need access to ath9k's statistics for
           interrupts, rate control, etc.
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_hw.c b/drivers/net/wireless/ath/ath9k/ar9003_hw.c
index 74fd3977feeb..59bf5f31e212 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_hw.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_hw.c
@@ -544,7 +544,7 @@ static void ar9003_rx_gain_table_mode0(struct ath_hw *ah)
                                 ar9340Common_rx_gain_table_1p0);
         else if (AR_SREV_9485_11(ah))
                 INIT_INI_ARRAY(&ah->iniModesRxGain,
-                                ar9485Common_wo_xlna_rx_gain_1_1);
+                               ar9485_common_rx_gain_1_1);
         else if (AR_SREV_9550(ah)) {
                 INIT_INI_ARRAY(&ah->iniModesRxGain,
                                 ar955x_1p0_common_rx_gain_table);
diff --git a/drivers/net/wireless/ath/carl9170/fw.c b/drivers/net/wireless/ath/carl9170/fw.c
index aaebecd19e59..63fd9af3fd39 100644
--- a/drivers/net/wireless/ath/carl9170/fw.c
+++ b/drivers/net/wireless/ath/carl9170/fw.c
@@ -336,8 +336,12 @@ static int carl9170_fw(struct ar9170 *ar, const __u8 *data, size_t len)
                 if (SUPP(CARL9170FW_WLANTX_CAB)) {
                         if_comb_types |=
                                 BIT(NL80211_IFTYPE_AP) |
-                                BIT(NL80211_IFTYPE_MESH_POINT) |
                                 BIT(NL80211_IFTYPE_P2P_GO);
+
+#ifdef CONFIG_MAC80211_MESH
+                        if_comb_types |=
+                                BIT(NL80211_IFTYPE_MESH_POINT);
+#endif /* CONFIG_MAC80211_MESH */
                 }
         }
 
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index 1261a9b84e04..75464ad4fbd1 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -3091,10 +3091,11 @@ brcmf_configure_wpaie(struct net_device *ndev, struct brcmf_vs_tlv *wpa_ie,
 
         len = wpa_ie->len + TLV_HDR_LEN;
         data = (u8 *)wpa_ie;
-        offset = 0;
+        offset = TLV_HDR_LEN;
         if (!is_rsn_ie)
                 offset += VS_IE_FIXED_HDR_LEN;
-        offset += WPA_IE_VERSION_LEN;
+        else
+                offset += WPA_IE_VERSION_LEN;
 
         /* check for multicast cipher suite */
         if (offset + WPA_IE_MIN_OUI_LEN > len) {
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/debug.h b/drivers/net/wireless/brcm80211/brcmsmac/debug.h
index 796836b0f469..822781cf15d4 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/debug.h
+++ b/drivers/net/wireless/brcm80211/brcmsmac/debug.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2012 Broadcom Corporation
+ * Copyright (c) 2012 Canonical Ltd.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c
index 606b534347bc..21a824232478 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c
@@ -1343,13 +1343,13 @@ static bool wlc_lcnphy_rx_iq_cal_gain(struct brcms_phy *pi, u16 biq1_gain,
 
         wlc_lcnphy_rx_gain_override_enable(pi, true);
         wlc_lcnphy_start_tx_tone(pi, 2000, (40 >> 1), 0);
-        usleep_range(500, 500);
+        udelay(500);
         write_radio_reg(pi, RADIO_2064_REG112, 0);
         if (!wlc_lcnphy_rx_iq_est(pi, 1024, 32, &iq_est_l))
                 return false;
 
         wlc_lcnphy_start_tx_tone(pi, 2000, 40, 0);
-        usleep_range(500, 500);
+        udelay(500);
         write_radio_reg(pi, RADIO_2064_REG112, 0);
         if (!wlc_lcnphy_rx_iq_est(pi, 1024, 32, &iq_est_h))
                 return false;
diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c
index e71c702e2eb1..800a16526c8e 100644
--- a/drivers/net/wireless/p54/p54usb.c
+++ b/drivers/net/wireless/p54/p54usb.c
@@ -47,6 +47,7 @@ static struct usb_device_id p54u_table[] = {
         {USB_DEVICE(0x0411, 0x0050)},   /* Buffalo WLI2-USB2-G54 */
         {USB_DEVICE(0x045e, 0x00c2)},   /* Microsoft MN-710 */
         {USB_DEVICE(0x0506, 0x0a11)},   /* 3COM 3CRWE254G72 */
+        {USB_DEVICE(0x0675, 0x0530)},   /* DrayTek Vigor 530 */
         {USB_DEVICE(0x06b9, 0x0120)},   /* Thomson SpeedTouch 120g */
         {USB_DEVICE(0x0707, 0xee06)},   /* SMC 2862W-G */
         {USB_DEVICE(0x07aa, 0x001c)},   /* Corega CG-WLUSB2GT */
@@ -82,6 +83,8 @@ static struct usb_device_id p54u_table[] = {
         {USB_DEVICE(0x06a9, 0x000e)},   /* Westell 802.11g USB (A90-211WG-01) */
         {USB_DEVICE(0x06b9, 0x0121)},   /* Thomson SpeedTouch 121g */
         {USB_DEVICE(0x0707, 0xee13)},   /* SMC 2862W-G version 2 */
+        {USB_DEVICE(0x0803, 0x4310)},   /* Zoom 4410a */
+        {USB_DEVICE(0x083a, 0x4503)},   /* T-Com Sinus 154 data II */
         {USB_DEVICE(0x083a, 0x4521)},   /* Siemens Gigaset USB Adapter 54 version 2 */
         {USB_DEVICE(0x083a, 0xc501)},   /* Zoom Wireless-G 4410 */
         {USB_DEVICE(0x083a, 0xf503)},   /* Accton FD7050E ver 1010ec  */
@@ -101,6 +104,7 @@ static struct usb_device_id p54u_table[] = {
         {USB_DEVICE(0x13B1, 0x000C)},   /* Linksys WUSB54AG */
         {USB_DEVICE(0x1413, 0x5400)},   /* Telsey 802.11g USB2.0 Adapter */
         {USB_DEVICE(0x1435, 0x0427)},   /* Inventel UR054G */
+        /* {USB_DEVICE(0x15a9, 0x0002)}, * Also SparkLAN WL-682 with 3887 */
         {USB_DEVICE(0x1668, 0x1050)},   /* Actiontec 802UIG-1 */
         {USB_DEVICE(0x1740, 0x1000)},   /* Senao NUB-350 */
         {USB_DEVICE(0x2001, 0x3704)},   /* DLink DWL-G122 rev A2 */
diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index 3deacafdcd5e..4261e8ecc4c3 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -743,6 +743,8 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
 
 done:
                 bufferaddress = (*((dma_addr_t *)skb->cb));
+                if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress))
+                        return;
                 tmp_one = 1;
                 rtlpriv->cfg->ops->set_desc((u8 *) pdesc, false,
                                             HW_DESC_RXBUFF_ADDR,
@@ -1115,6 +1117,10 @@ static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw)
                                            PCI_DMA_FROMDEVICE);
 
                         bufferaddress = (*((dma_addr_t *)skb->cb));
+                        if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress)) {
+                                dev_kfree_skb_any(skb);
+                                return 1;
+                        }
                         rtlpriv->cfg->ops->set_desc((u8 *)entry, false,
                                                     HW_DESC_RXBUFF_ADDR,
                                                     (u8 *)&bufferaddress);
diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
index 173424756149..c31795e379f7 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
@@ -611,8 +611,14 @@ void rtl92ce_tx_fill_desc(struct ieee80211_hw *hw,
         dma_addr_t mapping = pci_map_single(rtlpci->pdev,
                                             skb->data, skb->len,
                                             PCI_DMA_TODEVICE);
+
         u8 bw_40 = 0;
 
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
         rcu_read_lock();
         sta = get_sta(hw, mac->vif, mac->bssid);
         if (mac->opmode == NL80211_IFTYPE_STATION) {
@@ -774,6 +780,11 @@ void rtl92ce_tx_fill_cmddesc(struct ieee80211_hw *hw,
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
         __le16 fc = hdr->frame_control;
 
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
         CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE);
 
         if (firstseg)
diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
index f9f3861046c1..a0fbf284420e 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
@@ -587,6 +587,11 @@ void rtl92de_tx_fill_desc(struct ieee80211_hw *hw,
         buf_len = skb->len;
         mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
                                  PCI_DMA_TODEVICE);
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
         CLEAR_PCI_TX_DESC_CONTENT(pdesc, sizeof(struct tx_desc_92d));
         if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) {
                 firstseg = true;
@@ -740,6 +745,11 @@ void rtl92de_tx_fill_cmddesc(struct ieee80211_hw *hw,
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
         __le16 fc = hdr->frame_control;
 
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
         CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE);
         if (firstseg)
                 SET_TX_DESC_OFFSET(pdesc, USB_HWDESC_HEADER_LEN);
diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
index 0e9f6ebf078a..206561d7282f 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c
@@ -611,6 +611,11 @@ void rtl92se_tx_fill_desc(struct ieee80211_hw *hw,
                     PCI_DMA_TODEVICE);
         u8 bw_40 = 0;
 
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
         if (mac->opmode == NL80211_IFTYPE_STATION) {
                 bw_40 = mac->bw_40;
         } else if (mac->opmode == NL80211_IFTYPE_AP ||
@@ -763,6 +768,7 @@ void rtl92se_tx_fill_desc(struct ieee80211_hw *hw,
 void rtl92se_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc,
         bool firstseg, bool lastseg, struct sk_buff *skb)
 {
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
         struct rtl_tcb_desc *tcb_desc = (struct rtl_tcb_desc *)(skb->cb);
@@ -770,7 +776,12 @@ void rtl92se_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc,
         dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
                         PCI_DMA_TODEVICE);
 
-    /* Clear all status */
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
+        /* Clear all status     */
         CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_CMDDESC_SIZE_RTL8192S);
 
         /* This bit indicate this packet is used for FW download. */
diff --git a/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c b/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
index 87331d826d73..a313be8c21d2 100644
--- a/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
+++ b/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
@@ -387,6 +387,11 @@ void rtl8723ae_tx_fill_desc(struct ieee80211_hw *hw,
                                             PCI_DMA_TODEVICE);
         u8 bw_40 = 0;
 
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
         if (mac->opmode == NL80211_IFTYPE_STATION) {
                 bw_40 = mac->bw_40;
         } else if (mac->opmode == NL80211_IFTYPE_AP ||
@@ -542,6 +547,11 @@ void rtl8723ae_tx_fill_cmddesc(struct ieee80211_hw *hw,
                                             PCI_DMA_TODEVICE);
         __le16 fc = hdr->frame_control;
 
+        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
+                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
+                         "DMA mapping error");
+                return;
+        }
         CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE);
 
         if (firstseg)
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c
index 29f0969e4ba0..f2ecdeb3a90d 100644
--- a/drivers/net/wireless/rtlwifi/usb.c
+++ b/drivers/net/wireless/rtlwifi/usb.c
@@ -210,17 +210,16 @@ static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
         u16 index = REALTEK_USB_VENQT_CMD_IDX;
         int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
         u8 *buffer;
-        dma_addr_t dma_addr;
 
-        wvalue = (u16)(addr&0x0000ffff);
-        buffer = usb_alloc_coherent(udev, (size_t)len, GFP_ATOMIC, &dma_addr);
+        wvalue = (u16)(addr & 0x0000ffff);
+        buffer = kmalloc(len, GFP_ATOMIC);
         if (!buffer)
                 return;
         memcpy(buffer, data, len);
         usb_control_msg(udev, pipe, request, reqtype, wvalue,
                         index, buffer, len, 50);
 
-        usb_free_coherent(udev, (size_t)len, buffer, dma_addr);
+        kfree(buffer);
 }
 
 static void _rtl_usb_io_handler_init(struct device *dev,
@@ -640,6 +639,7 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
                         RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
                                  "Failed to prep_rx_urb!!\n");
                         err = PTR_ERR(skb);
+                        usb_free_urb(urb);
                         goto err_out;
                 }
 
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index c26e28b4bd9f..7ffa43bd7cf9 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1015,29 +1015,10 @@ err:
                 i = xennet_fill_frags(np, skb, &tmpq);
 
                 /*
-                 * Truesize approximates the size of true data plus
-                 * any supervisor overheads. Adding hypervisor
-                 * overheads has been shown to significantly reduce
-                 * achievable bandwidth with the default receive
-                 * buffer size. It is therefore not wise to account
-                 * for it here.
-                 *
-                 * After alloc_skb(RX_COPY_THRESHOLD), truesize is set
-                 * to RX_COPY_THRESHOLD + the supervisor
-                 * overheads. Here, we add the size of the data pulled
-                 * in xennet_fill_frags().
-                 *
-                 * We also adjust for any unused space in the main
-                 * data area by subtracting (RX_COPY_THRESHOLD -
-                 * len). This is especially important with drivers
-                 * which split incoming packets into header and data,
-                 * using only 66 bytes of the main data area (see the
-                 * e1000 driver for example.)  On such systems,
-                 * without this last adjustement, our achievable
-                 * receive throughout using the standard receive
-                 * buffer size was cut by 25%(!!!).
-                 */
-                skb->truesize += skb->data_len - RX_COPY_THRESHOLD;
+                 * Truesize is the actual allocation size, even if the
+                 * allocation is only partially used.
+                 */
+                skb->truesize += PAGE_SIZE * skb_shinfo(skb)->nr_frags;
                 skb->len += skb->data_len;
 
                 if (rx->flags & XEN_NETRXF_csum_blank)
diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig
index ff3c8a21f10d..5d6f2ec1c705 100644
--- a/drivers/ssb/Kconfig
+++ b/drivers/ssb/Kconfig
@@ -162,8 +162,7 @@ config SSB_DRIVER_GIGE
 
 config SSB_DRIVER_GPIO
         bool "SSB GPIO driver"
-        depends on SSB
-        select GPIOLIB
+        depends on SSB && GPIOLIB
         help
           Driver to provide access to the GPIO pins on the bus.