tree 485f848f2270a5d0d1b167e3b5f9d34617979711
parent 1694f25b4beb80b911fb21efcff36acca39aa696
author Brandeburg, Jesse <jesse.brandeburg@intel.com> 1222780128 +0000
committer David S. Miller <davem@davemloft.net> 1223510020 -0700

ixgb: fix bug when freeing resources

It was pointed out by Breno Leitao <leitao@linux.vnet.ibm.com> that
ixgb would crash on PPC when an IOMMU was in use, if change_mtu was
called.

It appears to be a pretty simple issue in the driver that wasn't discovered
because most systems don't run with an IOMMU.  The driver needs to only unmap
buffers that are mapped (duh).

CC: Breno Leitao <leitao@linux.vnet.ibm.com>

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>