net: i82596: fix dma_alloc_attr for sni_82596

[ Upstream commit 61c1d33d ]

Commit 7f683b92 ("i825xx: switch to switch to dma_alloc_attrs")
switched dma allocation over to dma_alloc_attr, but didn't convert
the SNI part to request consistent DMA memory. This broke sni_82596
since driver doesn't do dma_cache_sync for performance reasons.
Fix this by using different DMA_ATTRs for lasi_82596 and sni_82596.

Fixes: 7f683b92 ("i825xx: switch to switch to dma_alloc_attrs")
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/ethernet/i825xx/lasi_82596.c

@@ -96,6 +96,8 @@
 
 #define OPT_SWAP_PORT	0x0001	/* Need to wordswp on the MPU port */
 
+#define LIB82596_DMA_ATTR	DMA_ATTR_NON_CONSISTENT
+
 #define DMA_WBACK(ndev, addr, len) \
 	do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_TO_DEVICE); } while (0)
 
@@ -199,7 +201,7 @@ static int __exit lan_remove_chip(struct parisc_device *pdev)
 
 	unregister_netdev (dev);
 	dma_free_attrs(&pdev->dev, sizeof(struct i596_private), lp->dma,
-		       lp->dma_addr, DMA_ATTR_NON_CONSISTENT);
+		       lp->dma_addr, LIB82596_DMA_ATTR);
 	free_netdev (dev);
 	return 0;
 }

drivers/net/ethernet/i825xx/lib82596.c

@@ -1065,7 +1065,7 @@ static int i82596_probe(struct net_device *dev)
 
 	dma = dma_alloc_attrs(dev->dev.parent, sizeof(struct i596_dma),
 			      &lp->dma_addr, GFP_KERNEL,
-			      DMA_ATTR_NON_CONSISTENT);
+			      LIB82596_DMA_ATTR);
 	if (!dma) {
 		printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__);
 		return -ENOMEM;
@@ -1087,7 +1087,7 @@ static int i82596_probe(struct net_device *dev)
 	i = register_netdev(dev);
 	if (i) {
 		dma_free_attrs(dev->dev.parent, sizeof(struct i596_dma),
-			       dma, lp->dma_addr, DMA_ATTR_NON_CONSISTENT);
+			       dma, lp->dma_addr, LIB82596_DMA_ATTR);
 		return i;
 	}
 

drivers/net/ethernet/i825xx/sni_82596.c

@@ -23,6 +23,8 @@
 
 static const char sni_82596_string[] = "snirm_82596";
 
+#define LIB82596_DMA_ATTR	0
+
 #define DMA_WBACK(priv, addr, len)     do { } while (0)
 #define DMA_INV(priv, addr, len)       do { } while (0)
 #define DMA_WBACK_INV(priv, addr, len) do { } while (0)
@@ -151,7 +153,7 @@ static int sni_82596_driver_remove(struct platform_device *pdev)
 
 	unregister_netdev(dev);
 	dma_free_attrs(dev->dev.parent, sizeof(struct i596_private), lp->dma,
-		       lp->dma_addr, DMA_ATTR_NON_CONSISTENT);
+		       lp->dma_addr, LIB82596_DMA_ATTR);
 	iounmap(lp->ca);
 	iounmap(lp->mpu_port);
 	free_netdev (dev);