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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-04-06 11:02:50 +1000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-06 15:39:45 -0700 |
| commit | 027f426d547967cd1b6899597367aa64af51c28e (patch) | |
| tree | 9339109d86fc8b7c28cc366a74c0b3ab359401d5 | |
| parent | 7b49cd1c9eca4acd4dc36b6c2c532cad3576171d (diff) | |
| download | linux-027f426d547967cd1b6899597367aa64af51c28e.tar.bz2 | |
ftgmac100: Add missing barrier in ftgmac100_rx_packet()
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/faraday/ftgmac100.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 5cd854e740a9..535e8a00d404 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -444,6 +444,9 @@ static bool ftgmac100_rx_packet(struct ftgmac100 *priv, int *processed) if (!ftgmac100_rxdes_packet_ready(rxdes)) return false; + /* Order subsequent reads with the test for the ready bit */ + dma_rmb(); + /* We don't cope with fragmented RX packets */ if (unlikely(!ftgmac100_rxdes_first_segment(rxdes) || !ftgmac100_rxdes_last_segment(rxdes))) |