[PATCH 3/4] arm64: let set_memory_xx(addr, 0) succeed.

[mika.penttila]

From: Mika Penttilä <mika.pentt...@nextfour.com>

This makes set_memory_xx() consistent with x86.

Signed-off-by: Mika Penttilä mika.pentt...@nextfour.com

---
 arch/arm64/mm/pageattr.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
index 3571c73..52220dd 100644
--- a/arch/arm64/mm/pageattr.c
+++ b/arch/arm64/mm/pageattr.c
@@ -51,6 +51,9 @@ static int change_memory_common(unsigned long addr, int 
numpages,
                WARN_ON_ONCE(1);
        }
 
+       if (!numpages)
+               return 0;
+
        if (start < MODULES_VADDR || start >= MODULES_END)
                return -EINVAL;
 
-- 
1.9.1