diff mbox series

[v3,03/16] media: media/test_drivers: Replace open-coded parity calculation with parity8()

Message ID 20250306162541.2633025-4-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: 12
wifibot/build_allmodconfig_warn fail Errors and warnings before: 46 this patch: 99
wifibot/build_clang fail Errors and warnings before: 16 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, 20 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: 0 this patch: 0
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/test-drivers/vivid/vivid-vbi-gen.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-gen.c b/drivers/media/test-drivers/vivid/vivid-vbi-gen.c
index 70a4024d461e..e0f4151bda18 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-gen.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-gen.c
@@ -5,6 +5,7 @@ 
  * 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>
@@ -165,12 +166,7 @@  static const u8 vivid_cc_sequence2[30] = {
 
 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)