From 708b70ff31e0577bff3c48eefa19122f6e346252 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Thu, 27 Dec 2012 10:37:30 -0600 Subject: [PATCH] rtlwifi: rtl8192de: 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 Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/rtl8192de/trx.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/wireless/rtlwifi/rtl8192de/trx.c b/drivers/net/wireless/rtlwifi/rtl8192de/trx.c index f9f3861046c1..a0fbf284420e 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); -- 2.20.1