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net/ethernet: cpsw: Bugfix interrupts before enabling napi 

If interrupts happen before napi_enable was called, the driver will not
work as expected. Network transmissions are impossible in this state.
This bug can be reproduced easily by restarting the network interface in
a loop. After some time any network transmissions on the network
interface will fail.

This patch fixes the bug by enabling napi before enabling the network
interface interrupts.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Markus Pargmann 2013-10-13 21:17:01 +02:00 committed by David S. Miller
parent 60e66fee56
commit dbbd2ad89b
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/ti/cpsw.c
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@ -1169,9 +1169,9 @@ static int cpsw_ndo_open(struct net_device *ndev)
}
}
napi_enable(&priv->napi);
cpdma_ctlr_start(priv->dma);
cpsw_intr_enable(priv);
napi_enable(&priv->napi);
cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_RX);
cpdma_ctlr_eoi(priv->dma, CPDMA_EOI_TX);