net: cpsw: fix cpdma rx descriptor leak on down interface
authorSchuyler Patton <spatton@ti.com>
Mon, 3 Mar 2014 10:49:06 +0000 (16:19 +0530)
committerDavid S. Miller <davem@davemloft.net>
Mon, 3 Mar 2014 20:50:31 +0000 (15:50 -0500)
commit3995d265b3640fb7dc843a3c5f62ced4f121fb89
tree394e51dc04306a6efe7ffea6296673fe53ea644b
parentec495fac119f2eaea8b8c6e6db17ba163c7af1f4
net: cpsw: fix cpdma rx descriptor leak on down interface

This patch fixes a CPDMA RX Descriptor leak that occurs after taking
the interface down when the CPSW is in Dual MAC mode. Previously
the CPSW_ALE port was left open up which causes packets to be received
and processed by the RX interrupt handler and were passed to the
non active network interface where they were ignored.

The fix is for the slave_stop function of the selected interface
to disable the respective CPSW_ALE Port from forwarding packets. This
blocks traffic from being received on the inactive interface.

Signed-off-by: Schuyler Patton <spatton@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/ti/cpsw.c