[xen staging] xen/cpu: fix MISRA C 2012 Rule 20.7 violation

[patchbot@xxxxxxx]

commit e99709a86d59b3a9319f7b00880abd23c62251f1
Author:     Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
AuthorDate: Tue Aug 9 11:51:14 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Aug 9 11:51:14 2022 +0200

    xen/cpu: fix MISRA C 2012 Rule 20.7 violation
    
    In MASK_DECLARE_ macros, 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>
    
    While there add the blanks missing around the + operators involved.
    
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
---
 xen/common/cpu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/xen/common/cpu.c b/xen/common/cpu.c
index b0b63cdb36..4bdb017b0e 100644
--- a/xen/common/cpu.c
+++ b/xen/common/cpu.c
@@ -25,10 +25,10 @@ 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_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)
+#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)
 
 const unsigned long cpu_bit_bitmap[BITS_PER_LONG+1][BITS_TO_LONGS(NR_CPUS)] = {
 
--
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