linux-kernel - [PATCH 14/17] fsi: i2cr: Replace open-coded parity calculation with parity32()

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Message-Id: <20250223164217.2139331-15-visitorckw@gmail.com>
Date: Mon, 24 Feb 2025 00:42:14 +0800
From: Kuan-Wei Chiu <visitorckw@...il.com>
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	Kuan-Wei Chiu <visitorckw@...il.com>,
	Yu-Chun Lin <eleanor15x@...il.com>
Subject: [PATCH 14/17] fsi: i2cr: Replace open-coded parity calculation with parity32()

Refactor parity calculations to use the standard parity32() helper.
This change eliminates redundant implementations and improves code
efficiency.

Co-developed-by: Yu-Chun Lin <eleanor15x@...il.com>
Signed-off-by: Yu-Chun Lin <eleanor15x@...il.com>
Signed-off-by: Kuan-Wei Chiu <visitorckw@...il.com>
---
 drivers/fsi/fsi-master-i2cr.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/fsi/fsi-master-i2cr.c b/drivers/fsi/fsi-master-i2cr.c
index 40f1f4d231e5..8212b99ab2f9 100644
--- a/drivers/fsi/fsi-master-i2cr.c
+++ b/drivers/fsi/fsi-master-i2cr.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /* Copyright (C) IBM Corporation 2023 */
 
+#include <linux/bitops.h>
 #include <linux/device.h>
 #include <linux/fsi.h>
 #include <linux/i2c.h>
@@ -38,14 +39,7 @@ static const u8 i2cr_cfam[] = {
 
 static bool i2cr_check_parity32(u32 v, bool parity)
 {
-	u32 i;
-
-	for (i = 0; i < 32; ++i) {
-		if (v & (1u << i))
-			parity = !parity;
-	}
-
-	return parity;
+	return parity ^ parity32(v);
 }
 
 static bool i2cr_check_parity64(u64 v)
-- 
2.34.1