ARM: Fix the world famous typo with is_gate_vma()

Change-Id: I5fbbfbc2eb45276eaefeea5b839a7178ef9403e7
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Git-commit: 1d0bbf428924f94867542d49d436cf254b9dbd06
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
CRs-fixed: 561044
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 0e78e9c..ae628c5 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -706,7 +706,7 @@
 {
 	return in_gate_area(NULL, addr);
 }
-#define is_gate_vma(vma)	((vma) = &gate_vma)
+#define is_gate_vma(vma)	((vma) == &gate_vma)
 #else
 #define is_gate_vma(vma)	0
 #endif