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ll_temac: Reset dma descriptors indexes on ndo_open
The dma descriptors indexes are only initialized on the probe function. If a packet is on the buffer when temac_stop is called, the dma descriptors indexes can be left on a incorrect state where no other package can be sent. So an interface could be left in an usable state after ifdow/ifup. This patch makes sure that the descriptors indexes are in a proper status when the device is open. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -297,6 +297,12 @@ static int temac_dma_bd_init(struct net_device *ndev)
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lp->rx_bd_p + (sizeof(*lp->rx_bd_v) * (RX_BD_NUM - 1)));
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lp->dma_out(lp, TX_CURDESC_PTR, lp->tx_bd_p);
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/* Init descriptor indexes */
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lp->tx_bd_ci = 0;
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lp->tx_bd_next = 0;
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lp->tx_bd_tail = 0;
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lp->rx_bd_ci = 0;
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return 0;
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out:
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