Index: common/lib/libc/arch/arm/atomic/atomic_cas_up.S
===================================================================
RCS file: /cvsroot/src/common/lib/libc/arch/arm/atomic/atomic_cas_up.S,v
retrieving revision 1.7
diff -u -p -r1.7 atomic_cas_up.S
--- common/lib/libc/arch/arm/atomic/atomic_cas_up.S	4 Mar 2014 03:36:24 -0000	1.7
+++ common/lib/libc/arch/arm/atomic/atomic_cas_up.S	9 Mar 2020 10:28:52 -0000
@@ -41,6 +41,7 @@ RAS_START_ASM_HIDDEN(_atomic_cas)
 	cmp	r0, r1
 #if defined(__thumb__)
 	beq	1f
+	str	r2, [r3]
 #else
 	streq	r2, [r3]
 #endif
@@ -75,6 +76,7 @@ RAS_START_ASM_HIDDEN(_atomic_cas_16)
 	cmp	r0, r1
 #if defined(__thumb__)
 	beq	1f
+	strh	r2, [r3]
 #else
 	strheq	r2, [r3]
 #endif
@@ -91,6 +93,7 @@ RAS_START_ASM_HIDDEN(_atomic_cas_8)
 	cmp	r0, r1
 #if defined(__thumb__)
 	beq	1f
+	strb	r2, [r3]
 #else
 	strbeq	r2, [r3]
 #endif