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>
diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index cab07ec..a17dc6a 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -356,8 +356,8 @@
/* 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 @@
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