[xen staging] xsm/flask: fix MISRA C 2012 Rule 20.7 violations

[patchbot@xxxxxxx]

commit ad0838f4499820db613370feea354ac484544b11
Author:     Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
AuthorDate: Tue Sep 6 16:02:28 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Sep 6 16:02:28 2022 +0200

    xsm/flask: fix MISRA C 2012 Rule 20.7 violations
    
    In macros SIDTAB_HASH(), INIT_SIDTAB_LOCK(), SIDTAB_LOCK() and 
SIDTAB_UNLOCK(),
    add parentheses around the macro parameter to prevent against unintended
    expansions.
    
    Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Acked-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
---
 xen/xsm/flask/ss/sidtab.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/xen/xsm/flask/ss/sidtab.c b/xen/xsm/flask/ss/sidtab.c
index 74babfac9c..69fc3389b3 100644
--- a/xen/xsm/flask/ss/sidtab.c
+++ b/xen/xsm/flask/ss/sidtab.c
@@ -14,11 +14,11 @@
 #include "security.h"
 #include "sidtab.h"
 
-#define SIDTAB_HASH(sid) (sid & SIDTAB_HASH_MASK)
+#define SIDTAB_HASH(sid) ((sid) & SIDTAB_HASH_MASK)
 
-#define INIT_SIDTAB_LOCK(s) spin_lock_init(&s->lock)
-#define SIDTAB_LOCK(s) spin_lock(&s->lock)
-#define SIDTAB_UNLOCK(s) spin_unlock(&s->lock)
+#define INIT_SIDTAB_LOCK(s) spin_lock_init(&(s)->lock)
+#define SIDTAB_LOCK(s) spin_lock(&(s)->lock)
+#define SIDTAB_UNLOCK(s) spin_unlock(&(s)->lock)
 
 int sidtab_init(struct sidtab *s)
 {
--
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