intel-iommu: fault_reason index cleanup
Fix an off by one bug in the fault reason string reporting function, and
clean up some of the code around this buglet.
[akpm@linux-foundation.org: cleanup]
Signed-off-by: mark gross <mgross@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index ffb6439..56c73b8 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -28,7 +28,7 @@
#ifdef CONFIG_DMAR
struct intel_iommu;
-extern char *dmar_get_fault_reason(u8 fault_reason);
+extern const char *dmar_get_fault_reason(u8 fault_reason);
/* Can't use the common MSI interrupt functions
* since DMAR is not a pci device