From 0d826c3919ceede3c6afc3e87fc7087e0c863e7e Mon Sep 17 00:00:00 2001
From: Larry Finger <Larry.Finger@lwfinger.net>
Date: Wed, 26 Dec 2012 20:51:13 -0600
Subject: staging: rtl8187se: Fix failure to check pci_map_single()

Beginning with kernel 3.8, the DMA mapping routines issue a warning
for the first call to pci_map_single() that is not checked with a
pci_dma_mapping_error() call.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8187se/r8180_core.c b/drivers/staging/rtl8187se/r8180_core.c
index ae38475..d10d75e 100644
--- a/drivers/staging/rtl8187se/r8180_core.c
+++ b/drivers/staging/rtl8187se/r8180_core.c
@@ -937,7 +937,8 @@ short alloc_rx_desc_ring(struct net_device *dev, u16 bufsize, int count)
 
 		dma_tmp = pci_map_single(pdev, buf, bufsize * sizeof(u8),
 					 PCI_DMA_FROMDEVICE);
-
+		if (pci_dma_mapping_error(pdev, dma_tmp))
+			return -1;
 		if (-1 == buffer_add(&(priv->rxbuffer), buf, dma_tmp,
 			   &(priv->rxbufferhead))) {
 			DMESGE("Unable to allocate mem RX buf");
-- 
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