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authorRicardo Ribalda <ricardo.ribalda@gmail.com>2013-10-01 10:17:10 +0400
committerDavid S. Miller <davem@davemloft.net>2013-10-01 20:31:35 +0400
commit7167cf0e8cd10287b7912b9ffcccd9616f382922 (patch)
tree76ec0f2285b407f56c192e5b3c9f842abf29336d /drivers
parent45906723578f768d029ba7774cd97b435f2c5125 (diff)
downloadlinux-7167cf0e8cd10287b7912b9ffcccd9616f382922.tar.xz
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/xilinx/ll_temac_main.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c
index b88121f240ca..0029148077a9 100644
--- a/drivers/net/ethernet/xilinx/ll_temac_main.c
+++ b/drivers/net/ethernet/xilinx/ll_temac_main.c
@@ -297,6 +297,12 @@ static int temac_dma_bd_init(struct net_device *ndev)
lp->rx_bd_p + (sizeof(*lp->rx_bd_v) * (RX_BD_NUM - 1)));
lp->dma_out(lp, TX_CURDESC_PTR, lp->tx_bd_p);
+ /* Init descriptor indexes */
+ lp->tx_bd_ci = 0;
+ lp->tx_bd_next = 0;
+ lp->tx_bd_tail = 0;
+ lp->rx_bd_ci = 0;
+
return 0;
out: