drivers/net/: Use the DMA_{64,32}BIT_MASK constants

Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
pci_set_dma_mask() or pci_set_consistent_dma_mask()

This patch includes dma-mapping.h explicitly because it caused errors
on some architectures otherwise.

See http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for details

Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Domen Puncer <domen@coderock.org>
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 9c224eb..bb639a8 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -42,6 +42,7 @@
 #include <linux/errno.h>
 #include <linux/ioport.h>
 #include <linux/pci.h>
+#include <linux/dma-mapping.h>
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
@@ -4593,19 +4594,19 @@
 		return ret;
 	}
 
-	if (!pci_set_dma_mask(pdev, 0xffffffffffffffffULL)) {
+	if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
 		DBG_PRINT(INIT_DBG, "s2io_init_nic: Using 64bit DMA\n");
 		dma_flag = TRUE;
 
 		if (pci_set_consistent_dma_mask
-		    (pdev, 0xffffffffffffffffULL)) {
+		    (pdev, DMA_64BIT_MASK)) {
 			DBG_PRINT(ERR_DBG,
 				  "Unable to obtain 64bit DMA for \
 					consistent allocations\n");
 			pci_disable_device(pdev);
 			return -ENOMEM;
 		}
-	} else if (!pci_set_dma_mask(pdev, 0xffffffffUL)) {
+	} else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
 		DBG_PRINT(INIT_DBG, "s2io_init_nic: Using 32bit DMA\n");
 	} else {
 		pci_disable_device(pdev);