The cache should be invalidated when transfering ownership of a buffer
to the device. Otherwise the writeback of dirty cache lines can
corrupt the hardware written data.
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Tested-by: Jan Weitzel <j.weitzel@xxxxxxxxx>
---
Sascha, please apply this to master. It fixes a TFTP buffer corruption
issue reported by Jan.
---
drivers/net/cpsw.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c
index 799fac89a2f3..301b8a9dfde5 100644
--- a/drivers/net/cpsw.c
+++ b/drivers/net/cpsw.c
@@ -888,6 +888,7 @@ static int cpsw_recv(struct eth_device *edev)
while (cpdma_process(priv, &priv->rx_chan, &buffer, &len) >= 0) {
dma_inv_range((ulong)buffer, (ulong)buffer + len);
net_receive(edev, buffer, len);
+ dma_inv_range((ulong)buffer, (ulong)buffer + len);
cpdma_submit(priv, &priv->rx_chan, buffer, PKTSIZE);
}
--
2.1.4
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