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Date: Fri, 20 Jun 2014 13:13:56 +0100 From: Russell King <rmk+kernel@....linux.org.uk> To: linux-arm-kernel@...ts.infradead.org Cc: Fugang Duan <B38611@...escale.com>, netdev@...r.kernel.org Subject: [PATCH RFC 26/30] net: fec: clear receive interrupts before processing a packet Clear any pending receive interrupt before we process a pending packet. This helps to avoid any spurious interrupts being raised after we have fully cleaned the receive ring, while still allowing an interrupt to be raised if we receive another packet. The position of this is critical: we must do this prior to reading the next packet status to avoid potentially dropping an interrupt when a packet is still pending. Signed-off-by: Russell King <rmk+kernel@....linux.org.uk> --- drivers/net/ethernet/freescale/fec_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index e00616d54ec7..317c58ff9b95 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -1185,6 +1185,8 @@ fec_enet_rx(struct net_device *ndev, int budget) if ((status & BD_ENET_RX_LAST) == 0) netdev_err(ndev, "rcv is not +last\n"); + writel(FEC_ENET_RXF, fep->hwp + FEC_IEVENT); + /* Check for errors. */ if (status & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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