rtlwifi: rtl8723ae: Fix warning for unchecked pci_map_single() call

Kernel 3.8 implements checking of all DMA mapping calls and issues
a WARNING for the first it finds that is not checked.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 10 insertions, 0 deletions

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)