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>
mariux64 · Jun 28, 2019 · 01d1689 · 01d1689
1 parent 5b11177
commit 01d1689
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git 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
@@ -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)