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[V3.8,1/5] rtlwifi: Fix warning for unchecked pci_map_single() call

Message ID 1356559691-5048-2-git-send-email-Larry.Finger@lwfinger.net
State Not Applicable, archived
Delegated to: David Miller
Headers show

Commit Message

Larry Finger Dec. 26, 2012, 10:08 p.m. UTC 
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>
---
 drivers/net/wireless/rtlwifi/pci.c |    6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index 3deacaf..4261e8e 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);