diff options
| author | Thomas Petazzoni | 2017-02-21 11:28:03 +0100 |
|---|---|---|
| committer | David S. Miller | 2017-02-21 13:16:14 -0500 |
| commit | f8b0d5f8cc10f43642f97db6b37d60d765cff34a (patch) | |
| tree | 9040344d57573ac34f1ad4f45ca456e839279dca /drivers | |
| parent | d63f9e41f981722b11f42ea2b19798c00fcae0f9 (diff) | |
net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set()
Currently, mvpp2_rx_pkts_coal_set() does the following to avoid setting
a too large value for the RX coalescing by packet number:
val = (pkts & MVPP2_OCCUPIED_THRESH_MASK);
This means that if you set a value that is slightly higher the the
maximum number of packets, you in fact get a very low value. It makes a
lot more sense to simply check if the value is too high, and if it's too
high, limit it to the maximum possible value.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/marvell/mvpp2.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c index dfeee9636c7a..679811db51a1 100644 --- a/drivers/net/ethernet/marvell/mvpp2.c +++ b/drivers/net/ethernet/marvell/mvpp2.c @@ -4381,11 +4381,12 @@ static void mvpp2_txp_max_tx_size_set(struct mvpp2_port *port) static void mvpp2_rx_pkts_coal_set(struct mvpp2_port *port, struct mvpp2_rx_queue *rxq) { - u32 val; + if (rxq->pkts_coal > MVPP2_OCCUPIED_THRESH_MASK) + rxq->pkts_coal = MVPP2_OCCUPIED_THRESH_MASK; - val = (rxq->pkts_coal & MVPP2_OCCUPIED_THRESH_MASK); mvpp2_write(port->priv, MVPP2_RXQ_NUM_REG, rxq->id); - mvpp2_write(port->priv, MVPP2_RXQ_THRESH_REG, val); + mvpp2_write(port->priv, MVPP2_RXQ_THRESH_REG, + rxq->pkts_coal); } /* Set the time delay in usec before Rx interrupt */ |