diff --git a/arch/arm64/include/asm/percpu.h b/arch/arm64/include/asm/percpu.h
index b57b2bb00967..63bbfd4944a3 100644
--- a/arch/arm64/include/asm/percpu.h
+++ b/arch/arm64/include/asm/percpu.h
@@ -179,13 +179,13 @@ PERCPU_RET_OP(add, add, ldadd)
 	_pcp_protect_return(__percpu_read_64, pcp)
 
 #define this_cpu_write_1(pcp, val)	\
-	_pcp_protect(__percpu_write_8, pcp, (unsigned long)val)
+	_pcp_protect(__percpu_write_8, pcp, (unsigned long)(val))
 #define this_cpu_write_2(pcp, val)	\
-	_pcp_protect(__percpu_write_16, pcp, (unsigned long)val)
+	_pcp_protect(__percpu_write_16, pcp, (unsigned long)(val))
 #define this_cpu_write_4(pcp, val)	\
-	_pcp_protect(__percpu_write_32, pcp, (unsigned long)val)
+	_pcp_protect(__percpu_write_32, pcp, (unsigned long)(val))
 #define this_cpu_write_8(pcp, val)	\
-	_pcp_protect(__percpu_write_64, pcp, (unsigned long)val)
+	_pcp_protect(__percpu_write_64, pcp, (unsigned long)(val))
 
 #define this_cpu_add_1(pcp, val)	\
 	_pcp_protect(__percpu_add_case_8, pcp, val)