[PATCH net] net: i82596: fix dma_alloc_attr for sni_82596

[Thomas Bogendoerfer]

Commit 7f683b920479 ("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: 7f683b920479 ("i825xx: switch to switch to dma_alloc_attrs")
Signed-off-by: Thomas Bogendoerfer <tbogendoer...@suse.de>
---
 drivers/net/ethernet/i825xx/lasi_82596.c | 4 +++-
 drivers/net/ethernet/i825xx/lib82596.c   | 4 ++--
 drivers/net/ethernet/i825xx/sni_82596.c  | 4 +++-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/i825xx/lasi_82596.c 
b/drivers/net/ethernet/i825xx/lasi_82596.c
index 211c5f74b4c8..aec7e98bcc85 100644
--- a/drivers/net/ethernet/i825xx/lasi_82596.c
+++ b/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)
 
@@ -200,7 +202,7 @@ 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;
 }
diff --git a/drivers/net/ethernet/i825xx/lib82596.c 
b/drivers/net/ethernet/i825xx/lib82596.c
index 1274ad24d6af..f9742af7f142 100644
--- a/drivers/net/ethernet/i825xx/lib82596.c
+++ b/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;
        }
 
diff --git a/drivers/net/ethernet/i825xx/sni_82596.c 
b/drivers/net/ethernet/i825xx/sni_82596.c
index 6eb6c2ff7f09..6436a98c5953 100644
--- a/drivers/net/ethernet/i825xx/sni_82596.c
+++ b/drivers/net/ethernet/i825xx/sni_82596.c
@@ -24,6 +24,8 @@
 
 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)
@@ -152,7 +154,7 @@ 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);
-- 
2.16.4