diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index 04b8be9f1a77..e271d6708c87 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -130,7 +130,7 @@ ATOMIC_OP(xor, ^)
 #define arch_atomic_read(v)			READ_ONCE((v)->counter)
 #define arch_atomic_set(v, i)			WRITE_ONCE(((v)->counter), (i))
 
-#define arch_atomic_xchg(ptr, v)		(arch_xchg(&(ptr)->counter, (v)))
-#define arch_atomic_cmpxchg(v, old, new)	(arch_cmpxchg(&((v)->counter), (old), (new)))
+#define arch_atomic_xchg(ptr, v)		(arch_xchg(&(ptr)->counter, (u32)(v)))
+#define arch_atomic_cmpxchg(v, old, new)	(arch_cmpxchg(&((v)->counter), (u32)(old), (u32)(new)))
 
 #endif /* __ASM_GENERIC_ATOMIC_H */
diff --git a/include/asm-generic/cmpxchg-local.h b/include/asm-generic/cmpxchg-local.h
index c3e7315b7c1d..3df9f59a544e 100644
--- a/include/asm-generic/cmpxchg-local.h
+++ b/include/asm-generic/cmpxchg-local.h
@@ -26,16 +26,16 @@ static inline unsigned long __generic_cmpxchg_local(volatile void *ptr,
 	raw_local_irq_save(flags);
 	switch (size) {
 	case 1: prev = *(u8 *)ptr;
-		if (prev == (u8)old)
-			*(u8 *)ptr = (u8)new;
+		if (prev == (old & 0xffu))
+			*(u8 *)ptr = (new & 0xffu);
 		break;
 	case 2: prev = *(u16 *)ptr;
-		if (prev == (u16)old)
-			*(u16 *)ptr = (u16)new;
+		if (prev == (old & 0xffffu))
+			*(u16 *)ptr = (new & 0xffffu);
 		break;
 	case 4: prev = *(u32 *)ptr;
-		if (prev == (u32)old)
-			*(u32 *)ptr = (u32)new;
+		if (prev == (old & 0xffffffffffu))
+			*(u32 *)ptr = (new & 0xffffffffu);
 		break;
 	case 8: prev = *(u64 *)ptr;
 		if (prev == old)
diff --git a/include/asm-generic/cmpxchg.h b/include/asm-generic/cmpxchg.h
index dca4419922a9..848de25fc4bf 100644
--- a/include/asm-generic/cmpxchg.h
+++ b/include/asm-generic/cmpxchg.h
@@ -32,7 +32,7 @@ unsigned long __generic_xchg(unsigned long x, volatile void *ptr, int size)
 #else
 		local_irq_save(flags);
 		ret = *(volatile u8 *)ptr;
-		*(volatile u8 *)ptr = x;
+		*(volatile u8 *)ptr = (x & 0xffu);
 		local_irq_restore(flags);
 		return ret;
 #endif /* __xchg_u8 */
@@ -43,7 +43,7 @@ unsigned long __generic_xchg(unsigned long x, volatile void *ptr, int size)
 #else
 		local_irq_save(flags);
 		ret = *(volatile u16 *)ptr;
-		*(volatile u16 *)ptr = x;
+		*(volatile u16 *)ptr = (x & 0xffffu);
 		local_irq_restore(flags);
 		return ret;
 #endif /* __xchg_u16 */
@@ -54,7 +54,7 @@ unsigned long __generic_xchg(unsigned long x, volatile void *ptr, int size)
 #else
 		local_irq_save(flags);
 		ret = *(volatile u32 *)ptr;
-		*(volatile u32 *)ptr = x;
+		*(volatile u32 *)ptr = (x & 0xffffffffu);
 		local_irq_restore(flags);
 		return ret;
 #endif /* __xchg_u32 */