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[3.8,3/5,V2] rtlwifi: rtl8192de: Fix warning for unchecked pci_map_single() call

Message ID 1356626252-4058-4-git-send-email-Larry.Finger@lwfinger.net
State Not Applicable, archived
Delegated to: David Miller
Headers show

Commit Message

Larry Finger Dec. 27, 2012, 4:37 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/rtl8192de/trx.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

No change for V2.
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Patch

diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c
index f9f3861..a0fbf28 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);