The kernel-doc in lib/hweight.c is global to  the file and
currently has issues:

Warning: lib/hweight.c:13 expecting prototype for hweightN(). Prototype was for __sw_hweight32() instead
Warning: lib/hweight.c:13 function parameter 'w' not described in '__sw_hweight32'

Update it accordingly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 lib/hweight.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/hweight.c b/lib/hweight.c
index c94586b62551..0dfcafc3fd39 100644
--- a/lib/hweight.c
+++ b/lib/hweight.c
@@ -4,8 +4,8 @@
 #include <asm/types.h>
 
 /**
- * hweightN - returns the hamming weight of a N-bit word
- * @x: the word to weigh
+ * DOC: __sw_hweightN - returns the hamming weight of a N-bit word
+ * @w: the word to weigh
  *
  * The Hamming Weight of a number is the total number of bits set in it.
  */
-- 
2.50.1