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net: stmmac: Decrease default RX Watchdog value

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For performance reasons decrease the default RX Watchdog value for the
minimum allowed.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu 2019-06-28 09:29:14 +02:00 committed by David S. Miller
parent 5b1117704d
commit 01d1689d6d
2 changed files with 3 additions and 3 deletions
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2
drivers/net/ethernet/stmicro/stmmac/common.h
View File

@ -246,7 +246,7 @@ struct stmmac_safety_stats {
/* Max/Min RI Watchdog Timer count value */
#define MAX_DMA_RIWT 0xff
#define MIN_DMA_RIWT 0x20
#define MIN_DMA_RIWT 0x10
/* Tx coalesce parameters */
#define STMMAC_COAL_TX_TIMER 1000
#define STMMAC_MAX_COAL_TX_TICK 100000

4
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View File

@ -2516,9 +2516,9 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS;
if (priv->use_riwt) {
ret = stmmac_rx_watchdog(priv, priv->ioaddr, MAX_DMA_RIWT, rx_cnt);
ret = stmmac_rx_watchdog(priv, priv->ioaddr, MIN_DMA_RIWT, rx_cnt);
if (!ret)
priv->rx_riwt = MAX_DMA_RIWT;
priv->rx_riwt = MIN_DMA_RIWT;
}
if (priv->hw->pcs)