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net: stmmac: Do not set RX IC bit if RX Coalesce is zero 

We may only want to use the RX Watchdog so lets check if RX Coalesce
settings are non-zero and only set the RX Interrupt on Completion bit if
its not.

Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5.4-rM2-2.2.x-imx-squashed
Jose Abreu 2019-11-14 12:42:45 +01:00 committed by Fugang Duan
parent 294ef5f6ce
commit c83f71b70c
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -3475,7 +3475,11 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
rx_q->rx_count_frames += priv->rx_coal_frames;
if (rx_q->rx_count_frames > priv->rx_coal_frames)
rx_q->rx_count_frames = 0;
use_rx_wd = priv->use_riwt && rx_q->rx_count_frames;
use_rx_wd = !priv->rx_coal_frames;
use_rx_wd |= rx_q->rx_count_frames > 0;
if (!priv->use_riwt)
use_rx_wd = false;
dma_wmb();
stmmac_set_rx_owner(priv, p, use_rx_wd);