net: stmmac: Decrease default RX Watchdog value

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>

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index ad9e936..14d8f6d 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -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

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 0b1900b..40408a0 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -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)