From: Emil Tantilov <emil.s.tantilov@intel.com>
Date: Sat, 28 Jul 2012 05:07:48 +0000 (+0000)
Subject: igb: fix panic while dumping packets on Tx hang with IOMMU
X-Git-Tag: v3.6-rc2~15^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b669588abaceb5c6d70699b6c009e5cedc42449b;p=pandora-kernel.git

igb: fix panic while dumping packets on Tx hang with IOMMU

This patch resolves a "BUG: unable to handle kernel paging request at ..."
oops while dumping packet data. The issue occurs with IOMMU enabled due to
the address provided by phys_to_virt().

This patch avoids phys_to_virt() by making using skb->data and the address
of the pages allocated for Rx.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
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