net: stmmac: Prevent missing interrupts when running NAPI

When we trigger NAPI we are disabling interrupts but in case we receive
or send a packet in the meantime, as interrupts are disabled, we will
miss this event.

Trigger both NAPI instances (RX and TX) when at least one event happens
so that we don't miss any interrupts.

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/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index ce77a9a2eb560c6c5a49a5a5cc2babe57ca6c043..a87ec70b19f1786997fca97d7c476f09f90bc97a 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2058,6 +2058,9 @@ static int stmmac_napi_check(struct stmmac_priv *priv, u32 chan)
                                                 &priv->xstats, chan);
        struct stmmac_channel *ch = &priv->channel[chan];
 
+       if (status)
+               status |= handle_rx | handle_tx;
+
        if ((status & handle_rx) && (chan < priv->plat->rx_queues_to_use)) {
                stmmac_disable_dma_irq(priv, priv->ioaddr, chan);
                napi_schedule_irqoff(&ch->rx_napi);