[XEN PATCH v3 15/16] x86/mtrr: address violations of MISRA C:2012 Directive 4.10

[Simone Ballarin <simone.ballarin@xxxxxxxxxxx>]

From: Maria Celeste Cesario <maria.celeste.cesario@xxxxxxxxxxx>

Add inclusion guard to address violations of
MISRA C:2012 Directive 4.10 ("Precautions shall be taken in order to
prevent the contents of a header file being included more than once").
Mechanical change.
---
Commit introduced in v3

Signed-off-by: Maria Celeste Cesario  <maria.celeste.cesario@xxxxxxxxxxx>
Signed-off-by: Simone Ballarin  <simone.ballarin@xxxxxxxxxxx>
---
 xen/arch/x86/cpu/mtrr/mtrr.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/x86/cpu/mtrr/mtrr.h b/xen/arch/x86/cpu/mtrr/mtrr.h
index a9741e0cb0..632bf658be 100644
--- a/xen/arch/x86/cpu/mtrr/mtrr.h
+++ b/xen/arch/x86/cpu/mtrr/mtrr.h
@@ -1,6 +1,8 @@
 /*
  * local mtrr defines.
  */
+#ifndef X86_CPU_MTRR_MTRR_H
+#define X86_CPU_MTRR_MTRR_H
 
 #define MTRR_CHANGE_MASK_FIXED     0x01
 #define MTRR_CHANGE_MASK_VARIABLE  0x02
@@ -25,3 +27,5 @@ extern u64 size_or_mask, size_and_mask;
 extern unsigned int num_var_ranges;
 
 void mtrr_state_warn(void);
+
+#endif /* X86_CPU_MTRR_MTRR_H */
-- 
2.34.1