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[XEN,v2,for-4.20,3/7] xen/guest_access: address violations of MISRA rule 20.7

Message ID cfc2067d0389092c0f2d0e688e474b1f0d5013c7.1719407840.git.nicola.vetrini@bugseng.com (mailing list archive)
State New, archived
Headers show
Series address several violations of MISRA Rule 20.7 | expand

Commit Message

Nicola Vetrini June 26, 2024, 1:28 p.m. UTC 
MISRA C Rule 20.7 states: "Expressions resulting from the expansion
of macro parameters shall be enclosed in parentheses". Therefore, some
macro definitions should gain additional parentheses to ensure that all
current and future users will be safe with respect to expansions that
can possibly alter the semantics of the passed-in macro parameter.

No functional change.

Signed-off-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
---
 xen/include/xen/guest_access.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/xen/include/xen/guest_access.h b/xen/include/xen/guest_access.h
index a2146749e396..2e0971c4872c 100644
--- a/xen/include/xen/guest_access.h
+++ b/xen/include/xen/guest_access.h
@@ -51,9 +51,9 @@ 
     ((XEN_GUEST_HANDLE(type)) { &(hnd).p->fld })
 
 #define guest_handle_from_ptr(ptr, type)        \
-    ((XEN_GUEST_HANDLE_PARAM(type)) { (type *)ptr })
+    ((XEN_GUEST_HANDLE_PARAM(type)) { (type *)(ptr) })
 #define const_guest_handle_from_ptr(ptr, type)  \
-    ((XEN_GUEST_HANDLE_PARAM(const_##type)) { (const type *)ptr })
+    ((XEN_GUEST_HANDLE_PARAM(const_##type)) { (const type *)(ptr) })
 
 /*
  * Copy an array of objects to guest context via a guest handle,