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| author | Lucas Stach <l.stach@pengutronix.de> | 2015-03-02 09:59:36 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-03-03 08:37:24 +0100 |
| commit | 0b6ddeecb52feb3da17585c5d076da0f67dde2a0 (patch) | |
| tree | c3e2428c16741fbeb0a0257ee095d9fc62978462 | |
| parent | 603ba8c1ba906a66c71610b8a0a13375461565c2 (diff) | |
| download | barebox-0b6ddeecb52feb3da17585c5d076da0f67dde2a0.tar.gz barebox-0b6ddeecb52feb3da17585c5d076da0f67dde2a0.tar.xz | |
net: cpsw: prevent stray cache writeback
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@pengutronix.de>
Tested-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | drivers/net/cpsw.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c index 799fac89a2..301b8a9dfd 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); } |