From ccdc4f198193eb4956b8dbc00745270525c4cd6e Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 28 Jan 2009 23:03:09 +0000 Subject: [PATCH] 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 Acked-by: Greg Ungerer Signed-off-by: David S. Miller --- drivers/net/fec.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/fec.c b/drivers/net/fec.c index cab07eced06e..a17dc6af30c3 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 -- 2.39.5