[PATCH] net: cpsw: invalidate complete buffer

Jan Weitzel j.weitzel at phytec.de
Fri Feb 27 01:56:04 PST 2015


Without invalidating the complete buffer before giving it to
dma_inv_range, we got strange packets.

Signed-off-by: Jan Weitzel <j.weitzel at phytec.de>
Tested-by: Teresa Gámez <t.gamez at phytec.de>
---
 drivers/net/cpsw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index 799fac8..33afdc3 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -886,7 +886,7 @@ static int cpsw_recv(struct eth_device *edev)
 	int len;
 
 	while (cpdma_process(priv, &priv->rx_chan, &buffer, &len) >= 0) {
-		dma_inv_range((ulong)buffer, (ulong)buffer + len);
+		dma_inv_range((ulong)buffer, (ulong)buffer + PKTSIZE);
 		net_receive(edev, buffer, len);
 		cpdma_submit(priv, &priv->rx_chan, buffer, PKTSIZE);
 	}
-- 
1.9.1




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