[PATCH 2/4] arm: let set_memory_xx(addr, 0) succeed.

[mika.penttila]

From: Mika Penttilà <mika.penttila@xxxxxxxxxxxx>

This makes set_memory_xx() consistent with x86.

Signed-off-by: Mika Penttilà mika.penttila@xxxxxxxxxxxx

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

diff --git a/arch/arm/mm/pageattr.c b/arch/arm/mm/pageattr.c
index be7fe4b..9edf6b0 100644
--- a/arch/arm/mm/pageattr.c
+++ b/arch/arm/mm/pageattr.c
@@ -49,6 +49,9 @@ 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