[Xen-devel] [PATCH for-4.13 5/6] xen/arm: mm: Mark check_memory_layout_alignment_constraints as unused

[Julien Grall <julien.grall@arm.com>]

Clang will throw an error if a function is unused unless you tell
to ignore it. This can be done using __maybe_unused.

While modifying the declaration, update it to match prototype of similar
functions (see build_assertions). This helps to understand that the sole
purpose of the function is to hold BUILD_BUG_ON().

Signed-off-by: Julien Grall <julien.grall@arm.com>

---
    Changes in v2:
        - Update the prototype to match style of other functions holding
        on build assertions.
---
 xen/arch/arm/mm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index 9e0fdc39f9..be23acfe26 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -190,7 +190,8 @@ unsigned long total_pages;
 extern char __init_begin[], __init_end[];
 
 /* Checking VA memory layout alignment. */
-static inline void check_memory_layout_alignment_constraints(void) {
+static void __init __maybe_unused build_assertions(void)
+{
     /* 2MB aligned regions */
     BUILD_BUG_ON(XEN_VIRT_START & ~SECOND_MASK);
     BUILD_BUG_ON(FIXMAP_ADDR(0) & ~SECOND_MASK);
-- 
2.11.0


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