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net: stmmac: Prevent missing interrupts when running NAPI

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[ Upstream commit a976ca79e2 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jose Abreu
2019-05-24 10:20:26 +02:00
committed by Greg Kroah-Hartman
parent 3249b4fbd1
commit e30df34901
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@@ -2058,6 +2058,9 @@ static int stmmac_napi_check(struct stmmac_priv *priv, u32 chan)
&priv->xstats, chan); &priv->xstats, chan);
struct stmmac_channel *ch = &priv->channel[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)) { if ((status & handle_rx) && (chan < priv->plat->rx_queues_to_use)) {
stmmac_disable_dma_irq(priv, priv->ioaddr, chan); stmmac_disable_dma_irq(priv, priv->ioaddr, chan);
napi_schedule_irqoff(&ch->rx_napi); napi_schedule_irqoff(&ch->rx_napi);