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net: fec: quiesce packet processing when taking link down in fec_enet_adjust_link()
When the link goes down, the adjust_link method will be called, but there is no synchronisation to ensure that we won't be processing some last remaining packets via the NAPI handlers while performing a reset of the device. Add the necessary synchronisation to ensure that packet processing is complete before we stop and reset the FEC. Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1530,7 +1530,11 @@ static void fec_enet_adjust_link(struct net_device *ndev)
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}
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} else {
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if (fep->link) {
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napi_disable(&fep->napi);
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netif_tx_lock_bh(ndev);
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fec_stop(ndev);
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netif_tx_unlock_bh(ndev);
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napi_enable(&fep->napi);
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fep->link = phy_dev->link;
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status_change = 1;
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}
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