From 8211a7b5857914058c52ae977c96463e419b37ab Mon Sep 17 00:00:00 2001
From: Troy Heber <troy.heber@hp.com>
Date: Wed, 19 Aug 2009 15:26:11 -0600
Subject: [PATCH] pci/dmar: correct off-by-one error in dmar_fault()

DMAR faults are recorded into a ring of "fault recording registers".
fault_index is a 0-based index into the ring. The code allows the
0-based fault_index to be equal to the total number of fault registers
available from the cap_num_fault_regs() macro, which causes access
beyond the last available register.

Signed-off-by Troy Heber <troy.heber@hp.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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