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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/misc/ad525x_dpot.c
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@@ -1,7 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * ad525x_dpot: Driver for the Analog Devices digital potentiometers
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  * Copyright (c) 2009-2010 Analog Devices, Inc.
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- * Author: Michael Hennerich <hennerich@blackfin.uclinux.org>
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+ * Author: Michael Hennerich <michael.hennerich@analog.com>
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  *
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  * DEVID		#Wipers		#Positions	Resistor Options (kOhm)
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  * AD5258		1		64		1, 10, 50, 100
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@@ -57,16 +58,14 @@
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  * AD5272		1		1024		20, 50, 100 (50-TP)
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  * AD5274		1		256		20, 50, 100 (50-TP)
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  *
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- * See Documentation/misc-devices/ad525x_dpot.txt for more info.
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+ * See Documentation/misc-devices/ad525x_dpot.rst for more info.
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  *
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  * derived from ad5258.c
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  * Copyright (c) 2009 Cyber Switching, Inc.
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  * Author: Chris Verges <chrisv@cyberswitching.com>
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  *
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  * derived from ad5252.c
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- * Copyright (c) 2006-2011 Michael Hennerich <hennerich@blackfin.uclinux.org>
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- *
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- * Licensed under the GPL-2 or later.
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+ * Copyright (c) 2006-2011 Michael Hennerich <michael.hennerich@analog.com>
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  */
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 #include <linux/module.h>
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@@ -202,22 +201,20 @@
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 		return dpot_read_r8d8(dpot, ctrl);
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 	case DPOT_UID(AD5272_ID):
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 	case DPOT_UID(AD5274_ID):
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-			dpot_write_r8d8(dpot,
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+		dpot_write_r8d8(dpot,
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 				(DPOT_AD5270_1_2_4_READ_RDAC << 2), 0);
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-			value = dpot_read_r8d16(dpot,
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-				DPOT_AD5270_1_2_4_RDAC << 2);
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+		value = dpot_read_r8d16(dpot, DPOT_AD5270_1_2_4_RDAC << 2);
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+		if (value < 0)
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+			return value;
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+		/*
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+		 * AD5272/AD5274 returns high byte first, however
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+		 * underling smbus expects low byte first.
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+		 */
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+		value = swab16(value);
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-			if (value < 0)
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-				return value;
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-			/*
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-			 * AD5272/AD5274 returns high byte first, however
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-			 * underling smbus expects low byte first.
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-			 */
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-			value = swab16(value);
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-
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-			if (dpot->uid == DPOT_UID(AD5274_ID))
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-				value = value >> 2;
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+		if (dpot->uid == DPOT_UID(AD5274_ID))
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+			value = value >> 2;
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 		return value;
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 	default:
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 		if ((reg & DPOT_REG_TOL) || (dpot->max_pos > 256))
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@@ -760,6 +757,6 @@
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 MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>, "
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-	      "Michael Hennerich <hennerich@blackfin.uclinux.org>");
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+	      "Michael Hennerich <michael.hennerich@analog.com>");
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 MODULE_DESCRIPTION("Digital potentiometer driver");
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 MODULE_LICENSE("GPL");