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 ae38475854b50249f6787b90762cd025c26fef5b..d10d75e8a33fc6775b8901297a6c9de397b064ce 100644 (file)
--- 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");