linux-kernel - [PATCH drivers-next] regulator: ad5398: Fix incorrect power down bit mask

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Message-Id: <20250206103153.59114-1-dheeraj.linuxdev@gmail.com>
Date: Thu,  6 Feb 2025 16:01:53 +0530
From: Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev@...il.com>
To: michael.hennerich@...log.com
Cc: lgirdwood@...il.com,
	broonie@...nel.org,
	linux-kernel@...r.kernel.org,
	Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev@...il.com>
Subject: [PATCH drivers-next] regulator: ad5398: Fix incorrect power down bit mask

AD5398_SW_POWER_DOWN was defined with a bit position outside the valid
range of the device's 16-bit register. The bitwise operation with an
unsigned short would always evaluate to 0, making the power down check
ineffective.

Update AD5398_SW_POWER_DOWN to use a valid bit position within the
16-bit range of the register.

Fixes: 19d022d67d73 ("regulator: ad5398: change enable bit name to improve readibility")
Signed-off-by: Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev@...il.com>
---
 drivers/regulator/ad5398.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/ad5398.c b/drivers/regulator/ad5398.c
index 0274f41d0233..eb2a666a45cb 100644
--- a/drivers/regulator/ad5398.c
+++ b/drivers/regulator/ad5398.c
@@ -16,7 +16,7 @@
 #include <linux/regulator/machine.h>
 #include <linux/regulator/of_regulator.h>
 
-#define AD5398_SW_POWER_DOWN	BIT(16)
+#define AD5398_SW_POWER_DOWN	BIT(15)
 
 struct ad5398_chip_info {
 	struct i2c_client *client;
-- 
2.34.1