Refactor parity calculations to use the standard parity8() helper.
This change eliminates redundant implementations.
Co-developed-by: Yu-Chun Lin <eleanor15x@gmail.com>
Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com>
Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*/
+#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ktime.h>
static u8 calc_parity(u8 val)
{
- unsigned i;
- unsigned tot = 0;
-
- for (i = 0; i < 7; i++)
- tot += (val & (1 << i)) ? 1 : 0;
- return val | ((tot & 1) ? 0 : 0x80);
+ return val | (parity8(val) ? 0 : 0x80);
}
static void vivid_vbi_gen_set_time_of_day(u8 *packet)