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>

diff --git a/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c b/drivers/net/wireless/rtlwifi/rtl8723ae/trx.c
index 87331d826d73aa6bda0b4ee4a1f9a7da16dc7639..a313be8c21d28d5708fdbc34e49f0db3fa7836a2 100644 (file)
--- 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)