net: systemport: fix dma_unmap_single() len
dma_unmap_single() was called with dma_unmap_len(cb, dma_len),
unfortunately we failed to assign this length field in
bcm_sysport_rx_refill() or bcm_sysport_alloc_rx_bufs() using
dma_unmap_len_set().
This causes packet contents corruption because are we not invoking the
cache invalidation routines with the proper length. Fix this by using
the full RX buffer size (RX_BUF_LENGTH) because the mappings for the RX
bufers are created with that size.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 8edc098..26030d6 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -479,7 +479,7 @@
cb = &priv->rx_cbs[priv->rx_read_ptr];
skb = cb->skb;
dma_unmap_single(kdev, dma_unmap_addr(cb, dma_addr),
- dma_unmap_len(cb, dma_len), DMA_FROM_DEVICE);
+ RX_BUF_LENGTH, DMA_FROM_DEVICE);
/* Extract the Receive Status Block prepended */
rsb = (struct rsb *)skb->data;