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authorSascha Hauer <s.hauer@pengutronix.de>2009-01-28 23:03:09 +0000
committerDavid S. Miller <davem@davemloft.net>2009-02-01 00:58:24 -0800
commitccdc4f198193eb4956b8dbc00745270525c4cd6e (patch)
tree77efa737a2ee47692e6c09250f0cf0da3ae5a220 /drivers/net/fec.c
parent43268dcea7512cc10bc2542f20ce37971ecfeb48 (diff)
fec: replace flush_dcache_range with dma_sync_single
flush_dcache_range is not portable across architectures. Use dma_sync_single instead. Also, the memory must be synchronised in the receive path aswell. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/fec.c')
-rw-r--r--drivers/net/fec.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index cab07eced06..a17dc6af30c 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -356,8 +356,8 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Push the data cache so the CPM does not get stale memory
* data.
*/
- flush_dcache_range((unsigned long)skb->data,
- (unsigned long)skb->data + skb->len);
+ dma_sync_single(NULL, bdp->cbd_bufaddr,
+ bdp->cbd_datlen, DMA_TO_DEVICE);
/* Send it on its way. Tell FEC it's ready, interrupt when done,
* it's the last BD of the frame, and to put the CRC on the end.
@@ -630,6 +630,9 @@ while (!((status = bdp->cbd_sc) & BD_ENET_RX_EMPTY)) {
dev->stats.rx_bytes += pkt_len;
data = (__u8*)__va(bdp->cbd_bufaddr);
+ dma_sync_single(NULL, (unsigned long)__pa(data),
+ pkt_len - 4, DMA_FROM_DEVICE);
+
/* This does 16 byte alignment, exactly what we need.
* The packet length includes FCS, but we don't want to
* include that when passing upstream as it messes up