[xen staging] xen/page_alloc: address violation of Rule 14.3

[patchbot@xxxxxxx]

commit ec050fb80ce5cb4f0c720897c04ae6ad38411329
Author:     Federico Serafini <federico.serafini@xxxxxxxxxxx>
AuthorDate: Fri May 9 16:28:07 2025 -0700
Commit:     Stefano Stabellini <stefano.stabellini@xxxxxxx>
CommitDate: Fri May 9 16:29:15 2025 -0700

    xen/page_alloc: address violation of Rule 14.3
    
    MISRA C Rule 14.3 states that "Controlling expressions shall not be
    invariant".
    
    Change the #define to static inline to resolve the violation.
    
    Signed-off-by: Federico Serafini <federico.serafini@xxxxxxxxxxx>
    Signed-off-by: Victor Lira <victorm.lira@xxxxxxx>
    Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/common/page_alloc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index bd4538c28d..e57a287133 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -2005,7 +2005,10 @@ static unsigned long __initdata buddy_alloc_size =
     MB(CONFIG_BUDDY_ALLOCATOR_SIZE);
 size_param("buddy-alloc-size", buddy_alloc_size);
 #else
-#define domain_num_llc_colors(d) 0
+static inline unsigned int domain_num_llc_colors(const struct domain *d)
+{
+    return 0;
+}
 #define domain_llc_color(d, i)   0
 #endif
 
--
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