diff mbox

[V3.8,2/5] rtlwifi: rtl8192ce: Fix warning for unchecked pci_map_single() call

Message ID 1356559691-5048-3-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/rtl8192ce/trx.c |   11 +++++++++++
 1 file changed, 11 insertions(+)
diff mbox

Patch

diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c b/drivers/net/wireless/rtlwifi/rtl8192ce/trx.c
index 1734247..c31795e 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)