linux-kernel - [PATCH] power: supply: ltc4162l: Use GENMASK macro in bitmask operation

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Message-ID: <20250114011318.5784-1-kimseer.paller@analog.com>
Date: Tue, 14 Jan 2025 09:13:18 +0800
From: Kim Seer Paller <kimseer.paller@...log.com>
To: Sebastian Reichel <sre@...nel.org>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] power: supply: ltc4162l: Use GENMASK macro in bitmask operation

Replace the bitmask operation BIT(6) - 1 with GENMASK(5, 0) to make the
code clearer and readable.

Signed-off-by: Kim Seer Paller <kimseer.paller@...log.com>
---
 drivers/power/supply/ltc4162-l-charger.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/power/supply/ltc4162-l-charger.c b/drivers/power/supply/ltc4162-l-charger.c
index 24b62f000..db1a75c9b 100644
--- a/drivers/power/supply/ltc4162-l-charger.c
+++ b/drivers/power/supply/ltc4162-l-charger.c
@@ -410,7 +410,7 @@ static int ltc4162l_get_icharge(struct ltc4162l_info *info,
 	if (ret)
 		return ret;
 
-	regval &= BIT(6) - 1; /* Only the lower 5 bits */
+	regval &= GENMASK(5, 0); /* Only the lower 5 bits */
 
 	/* The charge current servo level: (icharge_dac + 1) × 1mV/RSNSB */
 	++regval;
@@ -449,7 +449,7 @@ static int ltc4162l_get_vcharge(struct ltc4162l_info *info,
 	if (ret)
 		return ret;
 
-	regval &= BIT(6) - 1; /* Only the lower 5 bits */
+	regval &= GENMASK(5, 0); /* Only the lower 5 bits */
 
 	/*
 	 * charge voltage setting can be computed from
@@ -500,7 +500,7 @@ static int ltc4015_get_vcharge(struct ltc4162l_info *info,
 	if (ret)
 		return ret;
 
-	regval &= BIT(6) - 1; /* Only the lower 5 bits */
+	regval &= GENMASK(5, 0); /* Only the lower 5 bits */
 
 	/*
 	 * charge voltage setting can be computed from:
@@ -636,7 +636,7 @@ static int ltc4162l_get_iin_limit_dac(struct ltc4162l_info *info,
 	if (ret)
 		return ret;
 
-	regval &= BIT(6) - 1; /* Only 6 bits */
+	regval &= GENMASK(5, 0); /* Only 6 bits */
 
 	/* (iin_limit_dac + 1) × 500μV / RSNSI */
 	++regval;

base-commit: a3a8799165ff83bb764fd800c6559c3cba0ddac3
-- 
2.34.1