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tg3: fix ring init when there are more TX than RX channels
authorThadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Tue, 25 Nov 2014 16:21:11 +0000 (14:21 -0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 25 Nov 2014 20:18:45 +0000 (15:18 -0500)
If TX channels are set to 4 and RX channels are set to less than 4,
using ethtool -L, the driver will try to initialize more RX channels
than it has allocated, causing an oops.

This fix only initializes the RX ring if it has been allocated.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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