[PATCH] xen/cpu: Fix MISRA C 2012 Rule 20.7 violation

[Xenia Ragiadakou <burzalodowa@xxxxxxxxx>]

In MASK_DECLARE_1(), the macro parameter 'x' is used as expression and
therefore it is good to be enclosed in parentheses to prevent against
unintended expansions.

Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
---
 xen/common/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/common/cpu.c b/xen/common/cpu.c
index b0b63cdb36..31fb5be5d9 100644
--- a/xen/common/cpu.c
+++ b/xen/common/cpu.c
@@ -25,7 +25,7 @@ const cpumask_t cpumask_all = {
  */
 
 /* cpu_bit_bitmap[0] is empty - so we can back into it */
-#define MASK_DECLARE_1(x) [x+1][0] = 1UL << (x)
+#define MASK_DECLARE_1(x) [(x)+1][0] = 1UL << (x)
 #define MASK_DECLARE_2(x) MASK_DECLARE_1(x), MASK_DECLARE_1(x+1)
 #define MASK_DECLARE_4(x) MASK_DECLARE_2(x), MASK_DECLARE_2(x+2)
 #define MASK_DECLARE_8(x) MASK_DECLARE_4(x), MASK_DECLARE_4(x+4)
-- 
2.34.1