diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index cee74a52b9eb..e1dee6c91ff5 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -49,7 +49,7 @@ static inline int get_bitmask_order(unsigned int count)
 
 static __always_inline unsigned long hweight_long(unsigned long w)
 {
-	return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
+	return sizeof(w) == 4 ? hweight32(w) : hweight64((__u64)w);
 }
 
 /**