Return-path: Received: from mail-pb0-f52.google.com ([209.85.160.52]:58967 "EHLO mail-pb0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751191Ab2LZWIw (ORCPT ); Wed, 26 Dec 2012 17:08:52 -0500 From: Larry Finger To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, Larry Finger , netdev@vger.kernel.org Subject: [PATCH V3.8 3/5] rtlwifi: rtl8192de: Fix warning for unchecked pci_map_single() call Date: Wed, 26 Dec 2012 16:08:09 -0600 Message-Id: <1356559691-5048-4-git-send-email-Larry.Finger@lwfinger.net> (sfid-20121226_230904_535859_AC8FE52B) In-Reply-To: <1356559691-5048-1-git-send-email-Larry.Finger@lwfinger.net> References: <1356559691-5048-1-git-send-email-Larry.Finger@lwfinger.net> Sender: linux-wireless-owner@vger.kernel.org List-ID: 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 --- 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 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); -- 1.7.10.4