diff mbox series

[v3,05/16] media: saa7115: Replace open-coded parity calculation with parity8()

Message ID 20250306162541.2633025-6-visitorckw@gmail.com (mailing list archive)
State Not Applicable
Delegated to: Johannes Berg
Headers show
Series Introduce and use generic parity16/32/64 helper | expand

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Context Check Description
wifibot/fixes_present success Fixes tag not required for -next series
wifibot/series_format fail Series longer than 15 patches
wifibot/tree_selection success Guessed tree name to be wireless-next
wifibot/ynl success Generated files up to date; no warnings/errors; no diff in generated;
wifibot/build_32bit fail Errors and warnings before: 11 this patch: 11
wifibot/build_allmodconfig_warn fail Errors and warnings before: 11 this patch: 11
wifibot/build_clang fail Errors and warnings before: 12 this patch: 12
wifibot/build_clang_rust success No Rust files in patch. Skipping build
wifibot/build_tools success No tools touched, skip
wifibot/check_selftest success No net selftest shell script
wifibot/checkpatch success total: 0 errors, 0 warnings, 0 checks, 30 lines checked
wifibot/deprecated_api success None detected
wifibot/header_inline success No static functions without inline keyword in header files
wifibot/kdoc success Errors and warnings before: 1 this patch: 1
wifibot/source_inline success Was 0 now: 0
wifibot/verify_fixes success No Fixes tag
wifibot/verify_signedoff success Signed-off-by tag matches author and committer

Commit Message

Kuan-Wei Chiu March 6, 2025, 4:25 p.m. UTC 
Refactor parity calculations to use the standard parity8() helper. This
change eliminates redundant implementations and improves code
efficiency.

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>
---
 drivers/media/i2c/saa7115.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/i2c/saa7115.c b/drivers/media/i2c/saa7115.c
index a1c71187e773..b8b8f206ec3a 100644
--- a/drivers/media/i2c/saa7115.c
+++ b/drivers/media/i2c/saa7115.c
@@ -25,6 +25,7 @@ 
 
 #include "saa711x_regs.h"
 
+#include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
@@ -664,15 +665,6 @@  static const unsigned char saa7115_init_misc[] = {
 	0x00, 0x00
 };
 
-static int saa711x_odd_parity(u8 c)
-{
-	c ^= (c >> 4);
-	c ^= (c >> 2);
-	c ^= (c >> 1);
-
-	return c & 1;
-}
-
 static int saa711x_decode_vps(u8 *dst, u8 *p)
 {
 	static const u8 biphase_tbl[] = {
@@ -1227,7 +1219,7 @@  static int saa711x_decode_vbi_line(struct v4l2_subdev *sd, struct v4l2_decode_vb
 		vbi->type = V4L2_SLICED_TELETEXT_B;
 		break;
 	case 4:
-		if (!saa711x_odd_parity(p[0]) || !saa711x_odd_parity(p[1]))
+		if (!parity8(p[0]) || !parity8(p[1]))
 			return 0;
 		vbi->type = V4L2_SLICED_CAPTION_525;
 		break;