Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 428 insertions, 268 deletions

diff --git a/drivers/hwmon/lm93.c b/drivers/hwmon/lm93.c
index 8bd6c5c9e05b..67e8fe256e02 100644
--- a/drivers/hwmon/lm93.c
+++ b/drivers/hwmon/lm93.c
@@ -1,42 +1,42 @@
 /*
-    lm93.c - Part of lm_sensors, Linux kernel modules for hardware monitoring
-
-    Author/Maintainer: Mark M. Hoffman <mhoffman@lightlink.com>
-	Copyright (c) 2004 Utilitek Systems, Inc.
-
-    derived in part from lm78.c:
-	Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>
-
-    derived in part from lm85.c:
-	Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
-	Copyright (c) 2003       Margit Schubert-While <margitsw@t-online.de>
-
-    derived in part from w83l785ts.c:
-	Copyright (c) 2003-2004 Jean Delvare <khali@linux-fr.org>
-
-    Ported to Linux 2.6 by Eric J. Bowersox <ericb@aspsys.com>
-	Copyright (c) 2005 Aspen Systems, Inc.
-
-    Adapted to 2.6.20 by Carsten Emde <cbe@osadl.org>
-        Copyright (c) 2006 Carsten Emde, Open Source Automation Development Lab
-
-    Modified for mainline integration by Hans J. Koch <hjk@hansjkoch.de>
-        Copyright (c) 2007 Hans J. Koch, Linutronix GmbH
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+ * lm93.c - Part of lm_sensors, Linux kernel modules for hardware monitoring
+ *
+ * Author/Maintainer: Mark M. Hoffman <mhoffman@lightlink.com>
+ *	Copyright (c) 2004 Utilitek Systems, Inc.
+ *
+ * derived in part from lm78.c:
+ *	Copyright (c) 1998, 1999  Frodo Looijaard <frodol@dds.nl>
+ *
+ * derived in part from lm85.c:
+ *	Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
+ *	Copyright (c) 2003       Margit Schubert-While <margitsw@t-online.de>
+ *
+ * derived in part from w83l785ts.c:
+ *	Copyright (c) 2003-2004 Jean Delvare <khali@linux-fr.org>
+ *
+ * Ported to Linux 2.6 by Eric J. Bowersox <ericb@aspsys.com>
+ *	Copyright (c) 2005 Aspen Systems, Inc.
+ *
+ * Adapted to 2.6.20 by Carsten Emde <cbe@osadl.org>
+ *	Copyright (c) 2006 Carsten Emde, Open Source Automation Development Lab
+ *
+ * Modified for mainline integration by Hans J. Koch <hjk@hansjkoch.de>
+ *	Copyright (c) 2007 Hans J. Koch, Linutronix GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
 
 #include <linux/module.h>
 #include <linux/init.h>
@@ -83,7 +83,7 @@
 #define LM93_REG_FAN_MIN(nr)		(0xb4 + (nr) * 2)
 
 /* pwm outputs: pwm1-pwm2 (nr => 0-1, reg => 0-3) */
-#define LM93_REG_PWM_CTL(nr,reg)	(0xc8 + (reg) + (nr) * 4)
+#define LM93_REG_PWM_CTL(nr, reg)	(0xc8 + (reg) + (nr) * 4)
 #define LM93_PWM_CTL1	0x0
 #define LM93_PWM_CTL2	0x1
 #define LM93_PWM_CTL3	0x2
@@ -160,7 +160,7 @@ static bool init;
 module_param(init, bool, 0);
 MODULE_PARM_DESC(init, "Set to non-zero to force chip initialization.");
 
-static int vccp_limit_type[2] = {0,0};
+static int vccp_limit_type[2] = {0, 0};
 module_param_array(vccp_limit_type, int, NULL, 0);
 MODULE_PARM_DESC(vccp_limit_type, "Configures in7 and in8 limit modes.");
 
@@ -187,8 +187,10 @@ static const struct { u8 cmd; u8 len; } lm93_block_read_cmds[12] = {
 	{ 0xfd,  9 },
 };
 
-/* ALARMS: SYSCTL format described further below
-   REG: 64 bits in 8 registers, as immediately below */
+/*
+ * ALARMS: SYSCTL format described further below
+ * REG: 64 bits in 8 registers, as immediately below
+ */
 struct block1_t {
 	u8 host_status_1;
 	u8 host_status_2;
@@ -217,8 +219,10 @@ struct lm93_data {
 	/* register values, arranged by block read groups */
 	struct block1_t block1;
 
-	/* temp1 - temp4: unfiltered readings
-	   temp1 - temp2: filtered readings */
+	/*
+	 * temp1 - temp4: unfiltered readings
+	 * temp1 - temp2: filtered readings
+	 */
 	u8 block2[6];
 
 	/* vin1 - vin16: readings */
@@ -295,14 +299,18 @@ struct lm93_data {
 	u8 sfc2;
 	u8 sf_tach_to_pwm;
 
-	/* The two PWM CTL2  registers can read something other than what was
-	   last written for the OVR_DC field (duty cycle override).  So, we
-	   save the user-commanded value here. */
+	/*
+	 * The two PWM CTL2  registers can read something other than what was
+	 * last written for the OVR_DC field (duty cycle override).  So, we
+	 * save the user-commanded value here.
+	 */
 	u8 pwm_override[2];
 };
 
-/* VID:	mV
-   REG: 6-bits, right justified, *always* using Intel VRM/VRD 10 */
+/*
+ * VID:	mV
+ * REG: 6-bits, right justified, *always* using Intel VRM/VRD 10
+ */
 static int LM93_VID_FROM_REG(u8 reg)
 {
 	return vid_from_reg((reg & 0x3f), 100);
@@ -317,12 +325,13 @@ static const u8 lm93_vin_reg_max[16] = {
 	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 	0xff, 0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xd1,
 };
-/* Values from the datasheet. They're here for documentation only.
-static const u8 lm93_vin_reg_nom[16] = {
-	0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0,
-	0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x40, 0xc0,
-};
-*/
+/*
+ * Values from the datasheet. They're here for documentation only.
+ * static const u8 lm93_vin_reg_nom[16] = {
+ * 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0,
+ * 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x40, 0xc0,
+ * };
+ */
 
 /* min, max, and nominal voltage readings, per channel (mV)*/
 static const unsigned long lm93_vin_val_min[16] = {
@@ -334,12 +343,13 @@ static const unsigned long lm93_vin_val_max[16] = {
 	1236, 1236, 1236, 1600, 2000, 2000, 1600, 1600,
 	4400, 6500, 3333, 2625, 1312, 1312, 1236, 3600,
 };
-/* Values from the datasheet. They're here for documentation only.
-static const unsigned long lm93_vin_val_nom[16] = {
-	 927,  927,  927, 1200, 1500, 1500, 1200, 1200,
-	3300, 5000, 2500, 1969,  984,  984,  309, 3300,
-};
-*/
+/*
+ * Values from the datasheet. They're here for documentation only.
+ * static const unsigned long lm93_vin_val_nom[16] = {
+ * 927,  927,  927, 1200, 1500, 1500, 1200, 1200,
+ * 3300, 5000, 2500, 1969,  984,  984,  309, 3300,
+ * };
+ */
 
 static unsigned LM93_IN_FROM_REG(int nr, u8 reg)
 {
@@ -353,8 +363,10 @@ static unsigned LM93_IN_FROM_REG(int nr, u8 reg)
 	return (slope * reg + intercept + 500) / 1000;
 }
 
-/* IN: mV, limits determined by channel nr
-   REG: scaling determined by channel nr */
+/*
+ * IN: mV, limits determined by channel nr
+ * REG: scaling determined by channel nr
+ */
 static u8 LM93_IN_TO_REG(int nr, unsigned val)
 {
 	/* range limit */
@@ -386,12 +398,14 @@ static unsigned LM93_IN_REL_FROM_REG(u8 reg, int upper, int vid)
 	return (uV_vid + uV_offset + 5000) / 10000;
 }
 
-#define LM93_IN_MIN_FROM_REG(reg,vid)	LM93_IN_REL_FROM_REG(reg,0,vid)
-#define LM93_IN_MAX_FROM_REG(reg,vid)	LM93_IN_REL_FROM_REG(reg,1,vid)
+#define LM93_IN_MIN_FROM_REG(reg, vid)	LM93_IN_REL_FROM_REG((reg), 0, (vid))
+#define LM93_IN_MAX_FROM_REG(reg, vid)	LM93_IN_REL_FROM_REG((reg), 1, (vid))
 
-/* vid in mV , upper == 0 indicates low limit, otherwise upper limit
-   upper also determines which nibble of the register is returned
-   (the other nibble will be 0x0) */
+/*
+ * vid in mV , upper == 0 indicates low limit, otherwise upper limit
+ * upper also determines which nibble of the register is returned
+ * (the other nibble will be 0x0)
+ */
 static u8 LM93_IN_REL_TO_REG(unsigned val, int upper, int vid)
 {
 	long uV_offset = vid * 1000 - val * 10000;
@@ -404,22 +418,26 @@ static u8 LM93_IN_REL_TO_REG(unsigned val, int upper, int vid)
 	}
 }
 
-/* TEMP: 1/1000 degrees C (-128C to +127C)
-   REG: 1C/bit, two's complement */
+/*
+ * TEMP: 1/1000 degrees C (-128C to +127C)
+ * REG: 1C/bit, two's complement
+ */
 static int LM93_TEMP_FROM_REG(u8 reg)
 {
 	return (s8)reg * 1000;
 }
 
 #define LM93_TEMP_MIN (-128000)
-#define LM93_TEMP_MAX ( 127000)
+#define LM93_TEMP_MAX (127000)
 
-/* TEMP: 1/1000 degrees C (-128C to +127C)
-   REG: 1C/bit, two's complement */
+/*
+ * TEMP: 1/1000 degrees C (-128C to +127C)
+ * REG: 1C/bit, two's complement
+ */
 static u8 LM93_TEMP_TO_REG(long temp)
 {
 	int ntemp = SENSORS_LIMIT(temp, LM93_TEMP_MIN, LM93_TEMP_MAX);
-	ntemp += (ntemp<0 ? -500 : 500);
+	ntemp += (ntemp < 0 ? -500 : 500);
 	return (u8)(ntemp / 1000);
 }
 
@@ -430,21 +448,25 @@ static int LM93_TEMP_OFFSET_MODE_FROM_REG(u8 sfc2, int nr)
 	return sfc2 & (nr < 2 ? 0x10 : 0x20);
 }
 
-/* This function is common to all 4-bit temperature offsets
-   reg is 4 bits right justified
-   mode 0 => 1C/bit, mode !0 => 0.5C/bit */
+/*
+ * This function is common to all 4-bit temperature offsets
+ * reg is 4 bits right justified
+ * mode 0 => 1C/bit, mode !0 => 0.5C/bit
+ */
 static int LM93_TEMP_OFFSET_FROM_REG(u8 reg, int mode)
 {
 	return (reg & 0x0f) * (mode ? 5 : 10);
 }
 
-#define LM93_TEMP_OFFSET_MIN  (  0)
+#define LM93_TEMP_OFFSET_MIN  (0)
 #define LM93_TEMP_OFFSET_MAX0 (150)
-#define LM93_TEMP_OFFSET_MAX1 ( 75)
+#define LM93_TEMP_OFFSET_MAX1 (75)
 
-/* This function is common to all 4-bit temperature offsets
-   returns 4 bits right justified
-   mode 0 => 1C/bit, mode !0 => 0.5C/bit */
+/*
+ * This function is common to all 4-bit temperature offsets
+ * returns 4 bits right justified
+ * mode 0 => 1C/bit, mode !0 => 0.5C/bit
+ */
 static u8 LM93_TEMP_OFFSET_TO_REG(int off, int mode)
 {
 	int factor = mode ? 5 : 10;
@@ -466,9 +488,11 @@ static int LM93_TEMP_AUTO_OFFSET_FROM_REG(u8 reg, int nr, int mode)
 		return LM93_TEMP_OFFSET_FROM_REG(reg >> 4 & 0x0f, mode);
 }
 
-/* TEMP: 1/10 degrees C (0C to +15C (mode 0) or +7.5C (mode non-zero))
-   REG: 1.0C/bit (mode 0) or 0.5C/bit (mode non-zero)
-   0 <= nr <= 3 */
+/*
+ * TEMP: 1/10 degrees C (0C to +15C (mode 0) or +7.5C (mode non-zero))
+ * REG: 1.0C/bit (mode 0) or 0.5C/bit (mode non-zero)
+ * 0 <= nr <= 3
+ */
 static u8 LM93_TEMP_AUTO_OFFSET_TO_REG(u8 old, int off, int nr, int mode)
 {
 	u8 new = LM93_TEMP_OFFSET_TO_REG(off, mode);
@@ -532,9 +556,12 @@ static u8 LM93_AUTO_BOOST_HYST_TO_REG(struct lm93_data *data, long hyst,
 	return reg;
 }
 
-/* PWM: 0-255 per sensors documentation
-   REG: 0-13 as mapped below... right justified */
-typedef enum { LM93_PWM_MAP_HI_FREQ, LM93_PWM_MAP_LO_FREQ } pwm_freq_t;
+/*
+ * PWM: 0-255 per sensors documentation
+ * REG: 0-13 as mapped below... right justified
+ */
+enum pwm_freq { LM93_PWM_MAP_HI_FREQ, LM93_PWM_MAP_LO_FREQ };
+
 static int lm93_pwm_map[2][16] = {
 	{
 		0x00, /*   0.00% */ 0x40, /*  25.00% */
@@ -558,13 +585,13 @@ static int lm93_pwm_map[2][16] = {
 	},
 };
 
-static int LM93_PWM_FROM_REG(u8 reg, pwm_freq_t freq)
+static int LM93_PWM_FROM_REG(u8 reg, enum pwm_freq freq)
 {
 	return lm93_pwm_map[freq][reg & 0x0f];
 }
 
 /* round up to nearest match */
-static u8 LM93_PWM_TO_REG(int pwm, pwm_freq_t freq)
+static u8 LM93_PWM_TO_REG(int pwm, enum pwm_freq freq)
 {
 	int i;
 	for (i = 0; i < 13; i++)
@@ -578,7 +605,7 @@ static u8 LM93_PWM_TO_REG(int pwm, pwm_freq_t freq)
 static int LM93_FAN_FROM_REG(u16 regs)
 {
 	const u16 count = le16_to_cpu(regs) >> 2;
-	return count==0 ? -1 : count==0x3fff ? 0: 1350000 / count;
+	return count == 0 ? -1 : count == 0x3fff ? 0 : 1350000 / count;
 }
 
 /*
@@ -600,8 +627,10 @@ static u16 LM93_FAN_TO_REG(long rpm)
 	return cpu_to_le16(regs);
 }
 
-/* PWM FREQ: HZ
-   REG: 0-7 as mapped below */
+/*
+ * PWM FREQ: HZ
+ * REG: 0-7 as mapped below
+ */
 static int lm93_pwm_freq_map[8] = {
 	22500, 96, 84, 72, 60, 48, 36, 12
 };
@@ -623,8 +652,10 @@ static u8 LM93_PWM_FREQ_TO_REG(int freq)
 	return (u8)i;
 }
 
-/* TIME: 1/100 seconds
- * REG: 0-7 as mapped below */
+/*
+ * TIME: 1/100 seconds
+ * REG: 0-7 as mapped below
+ */
 static int lm93_spinup_time_map[8] = {
 	0, 10, 25, 40, 70, 100, 200, 400,
 };
@@ -654,24 +685,30 @@ static int LM93_RAMP_FROM_REG(u8 reg)
 	return (reg & 0x0f) * 5;
 }
 
-/* RAMP: 1/100 seconds
-   REG: 50mS/bit 4-bits right justified */
+/*
+ * RAMP: 1/100 seconds
+ * REG: 50mS/bit 4-bits right justified
+ */
 static u8 LM93_RAMP_TO_REG(int ramp)
 {
 	ramp = SENSORS_LIMIT(ramp, LM93_RAMP_MIN, LM93_RAMP_MAX);
 	return (u8)((ramp + 2) / 5);
 }
 
-/* PROCHOT: 0-255, 0 => 0%, 255 => > 96.6%
- * REG: (same) */
+/*
+ * PROCHOT: 0-255, 0 => 0%, 255 => > 96.6%
+ * REG: (same)
+ */
 static u8 LM93_PROCHOT_TO_REG(long prochot)
 {
 	prochot = SENSORS_LIMIT(prochot, 0, 255);
 	return (u8)prochot;
 }
 
-/* PROCHOT-INTERVAL: 73 - 37200 (1/100 seconds)
- * REG: 0-9 as mapped below */
+/*
+ * PROCHOT-INTERVAL: 73 - 37200 (1/100 seconds)
+ * REG: 0-9 as mapped below
+ */
 static int lm93_interval_map[10] = {
 	73, 146, 290, 580, 1170, 2330, 4660, 9320, 18600, 37200,
 };
@@ -693,22 +730,25 @@ static u8 LM93_INTERVAL_TO_REG(long interval)
 	return (u8)i;
 }
 
-/* GPIO: 0-255, GPIO0 is LSB
- * REG: inverted */
+/*
+ * GPIO: 0-255, GPIO0 is LSB
+ * REG: inverted
+ */
 static unsigned LM93_GPI_FROM_REG(u8 reg)
 {
 	return ~reg & 0xff;
 }
 
-/* alarm bitmask definitions
-   The LM93 has nearly 64 bits of error status... I've pared that down to
-   what I think is a useful subset in order to fit it into 32 bits.
-
-   Especially note that the #VRD_HOT alarms are missing because we provide
-   that information as values in another sysfs file.
-
-   If libsensors is extended to support 64 bit values, this could be revisited.
-*/
+/*
+ * alarm bitmask definitions
+ * The LM93 has nearly 64 bits of error status... I've pared that down to
+ * what I think is a useful subset in order to fit it into 32 bits.
+ *
+ * Especially note that the #VRD_HOT alarms are missing because we provide
+ * that information as values in another sysfs file.
+ *
+ * If libsensors is extended to support 64 bit values, this could be revisited.
+ */
 #define LM93_ALARM_IN1		0x00000001
 #define LM93_ALARM_IN2		0x00000002
 #define LM93_ALARM_IN3		0x00000004
@@ -772,11 +812,12 @@ static u8 lm93_read_byte(struct i2c_client *client, u8 reg)
 	int value, i;
 
 	/* retry in case of read errors */
-	for (i=1; i<=MAX_RETRIES; i++) {
-		if ((value = i2c_smbus_read_byte_data(client, reg)) >= 0) {
+	for (i = 1; i <= MAX_RETRIES; i++) {
+		value = i2c_smbus_read_byte_data(client, reg);
+		if (value >= 0) {
 			return value;
 		} else {
-			dev_warn(&client->dev,"lm93: read byte data failed, "
+			dev_warn(&client->dev, "lm93: read byte data failed, "
 				"address 0x%02x.\n", reg);
 			mdelay(i + 3);
 		}
@@ -784,7 +825,7 @@ static u8 lm93_read_byte(struct i2c_client *client, u8 reg)
 	}
 
 	/* <TODO> what to return in case of error? */
-	dev_err(&client->dev,"lm93: All read byte retries failed!!\n");
+	dev_err(&client->dev, "lm93: All read byte retries failed!!\n");
 	return 0;
 }
 
@@ -796,7 +837,7 @@ static int lm93_write_byte(struct i2c_client *client, u8 reg, u8 value)
 	result = i2c_smbus_write_byte_data(client, reg, value);
 
 	if (result < 0)
-		dev_warn(&client->dev,"lm93: write byte data failed, "
+		dev_warn(&client->dev, "lm93: write byte data failed, "
 			 "0x%02x at address 0x%02x.\n", value, reg);
 
 	return result;
@@ -807,11 +848,12 @@ static u16 lm93_read_word(struct i2c_client *client, u8 reg)
 	int value, i;
 
 	/* retry in case of read errors */
-	for (i=1; i<=MAX_RETRIES; i++) {
-		if ((value = i2c_smbus_read_word_data(client, reg)) >= 0) {
+	for (i = 1; i <= MAX_RETRIES; i++) {
+		value = i2c_smbus_read_word_data(client, reg);
+		if (value >= 0) {
 			return value;
 		} else {
-			dev_warn(&client->dev,"lm93: read word data failed, "
+			dev_warn(&client->dev, "lm93: read word data failed, "
 				 "address 0x%02x.\n", reg);
 			mdelay(i + 3);
 		}
@@ -819,7 +861,7 @@ static u16 lm93_read_word(struct i2c_client *client, u8 reg)
 	}
 
 	/* <TODO> what to return in case of error? */
-	dev_err(&client->dev,"lm93: All read word retries failed!!\n");
+	dev_err(&client->dev, "lm93: All read word retries failed!!\n");
 	return 0;
 }
 
@@ -831,7 +873,7 @@ static int lm93_write_word(struct i2c_client *client, u8 reg, u16 value)
 	result = i2c_smbus_write_word_data(client, reg, value);
 
 	if (result < 0)
-		dev_warn(&client->dev,"lm93: write word data failed, "
+		dev_warn(&client->dev, "lm93: write word data failed, "
 			 "0x%04x at address 0x%02x.\n", value, reg);
 
 	return result;
@@ -840,13 +882,13 @@ static int lm93_write_word(struct i2c_client *client, u8 reg, u16 value)
 static u8 lm93_block_buffer[I2C_SMBUS_BLOCK_MAX];
 
 /*
-	read block data into values, retry if not expected length
-	fbn => index to lm93_block_read_cmds table
-		(Fixed Block Number - section 14.5.2 of LM93 datasheet)
-*/
+ * read block data into values, retry if not expected length
+ * fbn => index to lm93_block_read_cmds table
+ * (Fixed Block Number - section 14.5.2 of LM93 datasheet)
+ */
 static void lm93_read_block(struct i2c_client *client, u8 fbn, u8 *values)
 {
-	int i, result=0;
+	int i, result = 0;
 
 	for (i = 1; i <= MAX_RETRIES; i++) {
 		result = i2c_smbus_read_block_data(client,
@@ -855,7 +897,7 @@ static void lm93_read_block(struct i2c_client *client, u8 fbn, u8 *values)
 		if (result == lm93_block_read_cmds[fbn].len) {
 			break;
 		} else {
-			dev_warn(&client->dev,"lm93: block read data failed, "
+			dev_warn(&client->dev, "lm93: block read data failed, "
 				 "command 0x%02x.\n",
 				 lm93_block_read_cmds[fbn].cmd);
 			mdelay(i + 3);
@@ -863,7 +905,8 @@ static void lm93_read_block(struct i2c_client *client, u8 fbn, u8 *values)
 	}
 
 	if (result == lm93_block_read_cmds[fbn].len) {
-		memcpy(values,lm93_block_buffer,lm93_block_read_cmds[fbn].len);
+		memcpy(values, lm93_block_buffer,
+		       lm93_block_read_cmds[fbn].len);
 	} else {
 		/* <TODO> what to do in case of error? */
 	}
@@ -964,7 +1007,7 @@ static void lm93_update_client_common(struct lm93_data *data,
 static void lm93_update_client_full(struct lm93_data *data,
 				    struct i2c_client *client)
 {
-	dev_dbg(&client->dev,"starting device update (block data enabled)\n");
+	dev_dbg(&client->dev, "starting device update (block data enabled)\n");
 
 	/* in1 - in16: values & limits */
 	lm93_read_block(client, 3, (u8 *)(data->block3));
@@ -996,10 +1039,10 @@ static void lm93_update_client_full(struct lm93_data *data,
 static void lm93_update_client_min(struct lm93_data *data,
 				   struct i2c_client *client)
 {
-	int i,j;
+	int i, j;
 	u8 *ptr;
 
-	dev_dbg(&client->dev,"starting device update (block data disabled)\n");
+	dev_dbg(&client->dev, "starting device update (block data disabled)\n");
 
 	/* in1 - in16: values & limits */
 	for (i = 0; i < 16; i++) {
@@ -1037,7 +1080,7 @@ static void lm93_update_client_min(struct lm93_data *data,
 	for (i = 0; i < 2; i++) {
 		for (j = 0; j < 4; j++) {
 			data->block9[i][j] =
-				lm93_read_byte(client, LM93_REG_PWM_CTL(i,j));
+				lm93_read_byte(client, LM93_REG_PWM_CTL(i, j));
 		}
 	}
 
@@ -1097,14 +1140,13 @@ static ssize_t show_in_min(struct device *dev,
 	int vccp = nr - 6;
 	long rc, vid;
 
-	if ((nr==6 || nr==7) && (vccp_limit_type[vccp])) {
+	if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) {
 		vid = LM93_VID_FROM_REG(data->vid[vccp]);
 		rc = LM93_IN_MIN_FROM_REG(data->vccp_limits[vccp], vid);
+	} else {
+		rc = LM93_IN_FROM_REG(nr, data->block7[nr].min);
 	}
-	else {
-		rc = LM93_IN_FROM_REG(nr, data->block7[nr].min); \
-	}
-	return sprintf(buf, "%ld\n", rc); \
+	return sprintf(buf, "%ld\n", rc);
 }
 
 static ssize_t store_in_min(struct device *dev, struct device_attribute *attr,
@@ -1113,20 +1155,24 @@ static ssize_t store_in_min(struct device *dev, struct device_attribute *attr,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	int vccp = nr - 6;
 	long vid;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	if ((nr==6 || nr==7) && (vccp_limit_type[vccp])) {
+	if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) {
 		vid = LM93_VID_FROM_REG(data->vid[vccp]);
 		data->vccp_limits[vccp] = (data->vccp_limits[vccp] & 0xf0) |
 				LM93_IN_REL_TO_REG(val, 0, vid);
 		lm93_write_byte(client, LM93_REG_VCCP_LIMIT_OFF(vccp),
 				data->vccp_limits[vccp]);
-	}
-	else {
-		data->block7[nr].min = LM93_IN_TO_REG(nr,val);
+	} else {
+		data->block7[nr].min = LM93_IN_TO_REG(nr, val);
 		lm93_write_byte(client, LM93_REG_IN_MIN(nr),
 				data->block7[nr].min);
 	}
@@ -1175,14 +1221,13 @@ static ssize_t show_in_max(struct device *dev,
 	int vccp = nr - 6;
 	long rc, vid;
 
-	if ((nr==6 || nr==7) && (vccp_limit_type[vccp])) {
+	if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) {
 		vid = LM93_VID_FROM_REG(data->vid[vccp]);
-		rc = LM93_IN_MAX_FROM_REG(data->vccp_limits[vccp],vid);
-	}
-	else {
-		rc = LM93_IN_FROM_REG(nr,data->block7[nr].max); \
+		rc = LM93_IN_MAX_FROM_REG(data->vccp_limits[vccp], vid);
+	} else {
+		rc = LM93_IN_FROM_REG(nr, data->block7[nr].max);
 	}
-	return sprintf(buf,"%ld\n",rc); \
+	return sprintf(buf, "%ld\n", rc);
 }
 
 static ssize_t store_in_max(struct device *dev, struct device_attribute *attr,
@@ -1191,20 +1236,24 @@ static ssize_t store_in_max(struct device *dev, struct device_attribute *attr,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	int vccp = nr - 6;
 	long vid;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	if ((nr==6 || nr==7) && (vccp_limit_type[vccp])) {
+	if ((nr == 6 || nr == 7) && vccp_limit_type[vccp]) {
 		vid = LM93_VID_FROM_REG(data->vid[vccp]);
 		data->vccp_limits[vccp] = (data->vccp_limits[vccp] & 0x0f) |
 				LM93_IN_REL_TO_REG(val, 1, vid);
 		lm93_write_byte(client, LM93_REG_VCCP_LIMIT_OFF(vccp),
 				data->vccp_limits[vccp]);
-	}
-	else {
-		data->block7[nr].max = LM93_IN_TO_REG(nr,val);
+	} else {
+		data->block7[nr].max = LM93_IN_TO_REG(nr, val);
 		lm93_write_byte(client, LM93_REG_IN_MAX(nr),
 				data->block7[nr].max);
 	}
@@ -1250,7 +1299,7 @@ static ssize_t show_temp(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_TEMP_FROM_REG(data->block2[nr]));
+	return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->block2[nr]));
 }
 
 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
@@ -1262,7 +1311,7 @@ static ssize_t show_temp_min(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_TEMP_FROM_REG(data->temp_lim[nr].min));
+	return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->temp_lim[nr].min));
 }
 
 static ssize_t store_temp_min(struct device *dev, struct device_attribute *attr,
@@ -1271,7 +1320,12 @@ static ssize_t store_temp_min(struct device *dev, struct device_attribute *attr,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	long val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->temp_lim[nr].min = LM93_TEMP_TO_REG(val);
@@ -1292,7 +1346,7 @@ static ssize_t show_temp_max(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_TEMP_FROM_REG(data->temp_lim[nr].max));
+	return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->temp_lim[nr].max));
 }
 
 static ssize_t store_temp_max(struct device *dev, struct device_attribute *attr,
@@ -1301,7 +1355,12 @@ static ssize_t store_temp_max(struct device *dev, struct device_attribute *attr,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	long val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->temp_lim[nr].max = LM93_TEMP_TO_REG(val);
@@ -1322,7 +1381,7 @@ static ssize_t show_temp_auto_base(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_TEMP_FROM_REG(data->block10.base[nr]));
+	return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->block10.base[nr]));
 }
 
 static ssize_t store_temp_auto_base(struct device *dev,
@@ -1332,7 +1391,12 @@ static ssize_t store_temp_auto_base(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	long val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->block10.base[nr] = LM93_TEMP_TO_REG(val);
@@ -1349,11 +1413,11 @@ static SENSOR_DEVICE_ATTR(temp3_auto_base, S_IWUSR | S_IRUGO,
 			  show_temp_auto_base, store_temp_auto_base, 2);
 
 static ssize_t show_temp_auto_boost(struct device *dev,
-				    struct device_attribute *attr,char *buf)
+				    struct device_attribute *attr, char *buf)
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_TEMP_FROM_REG(data->boost[nr]));
+	return sprintf(buf, "%d\n", LM93_TEMP_FROM_REG(data->boost[nr]));
 }
 
 static ssize_t store_temp_auto_boost(struct device *dev,
@@ -1363,7 +1427,12 @@ static ssize_t store_temp_auto_boost(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	long val = simple_strtol(buf, NULL, 10);
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->boost[nr] = LM93_TEMP_TO_REG(val);
@@ -1386,7 +1455,7 @@ static ssize_t show_temp_auto_boost_hyst(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
 	int mode = LM93_TEMP_OFFSET_MODE_FROM_REG(data->sfc2, nr);
-	return sprintf(buf,"%d\n",
+	return sprintf(buf, "%d\n",
 		       LM93_AUTO_BOOST_HYST_FROM_REGS(data, nr, mode));
 }
 
@@ -1397,7 +1466,12 @@ static ssize_t store_temp_auto_boost_hyst(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	/* force 0.5C/bit mode */
@@ -1429,9 +1503,9 @@ static ssize_t show_temp_auto_offset(struct device *dev,
 	int ofs = s_attr->nr;
 	struct lm93_data *data = lm93_update_device(dev);
 	int mode = LM93_TEMP_OFFSET_MODE_FROM_REG(data->sfc2, nr);
-	return sprintf(buf,"%d\n",
+	return sprintf(buf, "%d\n",
 	       LM93_TEMP_AUTO_OFFSET_FROM_REG(data->block10.offset[ofs],
-					      nr,mode));
+					      nr, mode));
 }
 
 static ssize_t store_temp_auto_offset(struct device *dev,
@@ -1443,7 +1517,12 @@ static ssize_t store_temp_auto_offset(struct device *dev,
 	int ofs = s_attr->nr;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	/* force 0.5C/bit mode */
@@ -1539,7 +1618,7 @@ static ssize_t show_temp_auto_pwm_min(struct device *dev,
 	struct lm93_data *data = lm93_update_device(dev);
 	reg = data->auto_pwm_min_hyst[nr/2] >> 4 & 0x0f;
 	ctl4 = data->block9[nr][LM93_PWM_CTL4];
-	return sprintf(buf,"%d\n",LM93_PWM_FROM_REG(reg, (ctl4 & 0x07) ?
+	return sprintf(buf, "%d\n", LM93_PWM_FROM_REG(reg, (ctl4 & 0x07) ?
 				LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ));
 }
 
@@ -1550,12 +1629,17 @@ static ssize_t store_temp_auto_pwm_min(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 reg, ctl4;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	reg = lm93_read_byte(client, LM93_REG_PWM_MIN_HYST(nr));
-	ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr,LM93_PWM_CTL4));
+	ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4));
 	reg = (reg & 0x0f) |
 		LM93_PWM_TO_REG(val, (ctl4 & 0x07) ?
 				LM93_PWM_MAP_LO_FREQ :
@@ -1582,8 +1666,8 @@ static ssize_t show_temp_auto_offset_hyst(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
 	int mode = LM93_TEMP_OFFSET_MODE_FROM_REG(data->sfc2, nr);
-	return sprintf(buf,"%d\n",LM93_TEMP_OFFSET_FROM_REG(
-					data->auto_pwm_min_hyst[nr/2], mode));
+	return sprintf(buf, "%d\n", LM93_TEMP_OFFSET_FROM_REG(
+					data->auto_pwm_min_hyst[nr / 2], mode));
 }
 
 static ssize_t store_temp_auto_offset_hyst(struct device *dev,
@@ -1593,8 +1677,13 @@ static ssize_t store_temp_auto_offset_hyst(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 reg;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	/* force 0.5C/bit mode */
@@ -1626,7 +1715,7 @@ static ssize_t show_fan_input(struct device *dev,
 	int nr = s_attr->index;
 	struct lm93_data *data = lm93_update_device(dev);
 
-	return sprintf(buf,"%d\n",LM93_FAN_FROM_REG(data->block5[nr]));
+	return sprintf(buf, "%d\n", LM93_FAN_FROM_REG(data->block5[nr]));
 }
 
 static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0);
@@ -1640,7 +1729,7 @@ static ssize_t show_fan_min(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
 
-	return sprintf(buf,"%d\n",LM93_FAN_FROM_REG(data->block8[nr]));
+	return sprintf(buf, "%d\n", LM93_FAN_FROM_REG(data->block8[nr]));
 }
 
 static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
@@ -1649,11 +1738,16 @@ static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->block8[nr] = LM93_FAN_TO_REG(val);
-	lm93_write_word(client,LM93_REG_FAN_MIN(nr),data->block8[nr]);
+	lm93_write_word(client, LM93_REG_FAN_MIN(nr), data->block8[nr]);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -1667,18 +1761,19 @@ static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
 static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
 			  show_fan_min, store_fan_min, 3);
 
-/* some tedious bit-twiddling here to deal with the register format:
-
-	data->sf_tach_to_pwm: (tach to pwm mapping bits)
-
-		bit |  7  |  6  |  5  |  4  |  3  |  2  |  1  |  0
-		     T4:P2 T4:P1 T3:P2 T3:P1 T2:P2 T2:P1 T1:P2 T1:P1
-
-	data->sfc2: (enable bits)
-
-		bit |  3  |  2  |  1  |  0
-		       T4    T3    T2    T1
-*/
+/*
+ * some tedious bit-twiddling here to deal with the register format:
+ *
+ *	data->sf_tach_to_pwm: (tach to pwm mapping bits)
+ *
+ *		bit |  7  |  6  |  5  |  4  |  3  |  2  |  1  |  0
+ *		     T4:P2 T4:P1 T3:P2 T3:P1 T2:P2 T2:P1 T1:P2 T1:P1
+ *
+ *	data->sfc2: (enable bits)
+ *
+ *		bit |  3  |  2  |  1  |  0
+ *		       T4    T3    T2    T1
+ */
 
 static ssize_t show_fan_smart_tach(struct device *dev,
 				struct device_attribute *attr, char *buf)
@@ -1694,11 +1789,13 @@ static ssize_t show_fan_smart_tach(struct device *dev,
 	/* if there's a mapping and it's enabled */
 	if (mapping && ((data->sfc2 >> nr) & 0x01))
 		rc = mapping;
-	return sprintf(buf,"%ld\n",rc);
+	return sprintf(buf, "%ld\n", rc);
 }
 
-/* helper function - must grab data->update_lock before calling
-   fan is 0-3, indicating fan1-fan4 */
+/*
+ * helper function - must grab data->update_lock before calling
+ * fan is 0-3, indicating fan1-fan4
+ */
 static void lm93_write_fan_smart_tach(struct i2c_client *client,
 	struct lm93_data *data, int fan, long value)
 {
@@ -1724,7 +1821,12 @@ static ssize_t store_fan_smart_tach(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	/* sanity test, ignore the write otherwise */
@@ -1732,7 +1834,7 @@ static ssize_t store_fan_smart_tach(struct device *dev,
 		/* can't enable if pwm freq is 22.5KHz */
 		if (val) {
 			u8 ctl4 = lm93_read_byte(client,
-				LM93_REG_PWM_CTL(val-1,LM93_PWM_CTL4));
+				LM93_REG_PWM_CTL(val - 1, LM93_PWM_CTL4));
 			if ((ctl4 & 0x07) == 0)
 				val = 0;
 		}
@@ -1766,7 +1868,7 @@ static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
 	else /* show present h/w value if manual pwm disabled */
 		rc = LM93_PWM_FROM_REG(ctl2 >> 4, (ctl4 & 0x07) ?
 			LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ);
-	return sprintf(buf,"%ld\n",rc);
+	return sprintf(buf, "%ld\n", rc);
 }
 
 static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
@@ -1775,19 +1877,24 @@ static ssize_t store_pwm(struct device *dev, struct device_attribute *attr,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 ctl2, ctl4;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	ctl2 = lm93_read_byte(client,LM93_REG_PWM_CTL(nr,LM93_PWM_CTL2));
-	ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr,LM93_PWM_CTL4));
-	ctl2 = (ctl2 & 0x0f) | LM93_PWM_TO_REG(val,(ctl4 & 0x07) ?
+	ctl2 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2));
+	ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4));
+	ctl2 = (ctl2 & 0x0f) | LM93_PWM_TO_REG(val, (ctl4 & 0x07) ?
 			LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ) << 4;
 	/* save user commanded value */
 	data->pwm_override[nr] = LM93_PWM_FROM_REG(ctl2 >> 4,
 			(ctl4 & 0x07) ?  LM93_PWM_MAP_LO_FREQ :
 			LM93_PWM_MAP_HI_FREQ);
-	lm93_write_byte(client,LM93_REG_PWM_CTL(nr,LM93_PWM_CTL2),ctl2);
+	lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2), ctl2);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -1808,7 +1915,7 @@ static ssize_t show_pwm_enable(struct device *dev,
 		rc = ((ctl2 & 0xF0) == 0xF0) ? 0 : 1;
 	else
 		rc = 2;
-	return sprintf(buf,"%ld\n",rc);
+	return sprintf(buf, "%ld\n", rc);
 }
 
 static ssize_t store_pwm_enable(struct device *dev,
@@ -1818,26 +1925,33 @@ static ssize_t store_pwm_enable(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 ctl2;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	ctl2 = lm93_read_byte(client,LM93_REG_PWM_CTL(nr,LM93_PWM_CTL2));
+	ctl2 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2));
 
 	switch (val) {
 	case 0:
 		ctl2 |= 0xF1; /* enable manual override, set PWM to max */
 		break;
-	case 1: ctl2 |= 0x01; /* enable manual override */
+	case 1:
+		ctl2 |= 0x01; /* enable manual override */
 		break;
-	case 2: ctl2 &= ~0x01; /* disable manual override */
+	case 2:
+		ctl2 &= ~0x01; /* disable manual override */
 		break;
 	default:
 		mutex_unlock(&data->update_lock);
 		return -EINVAL;
 	}
 
-	lm93_write_byte(client,LM93_REG_PWM_CTL(nr,LM93_PWM_CTL2),ctl2);
+	lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL2), ctl2);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -1855,12 +1969,14 @@ static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
 	u8 ctl4;
 
 	ctl4 = data->block9[nr][LM93_PWM_CTL4];
-	return sprintf(buf,"%d\n",LM93_PWM_FREQ_FROM_REG(ctl4));
+	return sprintf(buf, "%d\n", LM93_PWM_FREQ_FROM_REG(ctl4));
 }
 
-/* helper function - must grab data->update_lock before calling
-   pwm is 0-1, indicating pwm1-pwm2
-   this disables smart tach for all tach channels bound to the given pwm */
+/*
+ * helper function - must grab data->update_lock before calling
+ * pwm is 0-1, indicating pwm1-pwm2
+ * this disables smart tach for all tach channels bound to the given pwm
+ */
 static void lm93_disable_fan_smart_tach(struct i2c_client *client,
 	struct lm93_data *data, int pwm)
 {
@@ -1887,17 +2003,22 @@ static ssize_t store_pwm_freq(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 ctl4;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	ctl4 = lm93_read_byte(client,LM93_REG_PWM_CTL(nr,LM93_PWM_CTL4));
+	ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4));
 	ctl4 = (ctl4 & 0xf8) | LM93_PWM_FREQ_TO_REG(val);
 	data->block9[nr][LM93_PWM_CTL4] = ctl4;
 	/* ctl4 == 0 -> 22.5KHz -> disable smart tach */
 	if (!ctl4)
 		lm93_disable_fan_smart_tach(client, data, nr);
-	lm93_write_byte(client,	LM93_REG_PWM_CTL(nr,LM93_PWM_CTL4), ctl4);
+	lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4), ctl4);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -1912,7 +2033,7 @@ static ssize_t show_pwm_auto_channels(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",data->block9[nr][LM93_PWM_CTL1]);
+	return sprintf(buf, "%d\n", data->block9[nr][LM93_PWM_CTL1]);
 }
 
 static ssize_t store_pwm_auto_channels(struct device *dev,
@@ -1922,11 +2043,16 @@ static ssize_t store_pwm_auto_channels(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->block9[nr][LM93_PWM_CTL1] = SENSORS_LIMIT(val, 0, 255);
-	lm93_write_byte(client,	LM93_REG_PWM_CTL(nr,LM93_PWM_CTL1),
+	lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL1),
 				data->block9[nr][LM93_PWM_CTL1]);
 	mutex_unlock(&data->update_lock);
 	return count;
@@ -1938,7 +2064,7 @@ static SENSOR_DEVICE_ATTR(pwm2_auto_channels, S_IWUSR | S_IRUGO,
 			  show_pwm_auto_channels, store_pwm_auto_channels, 1);
 
 static ssize_t show_pwm_auto_spinup_min(struct device *dev,
-				struct device_attribute *attr,char *buf)
+				struct device_attribute *attr, char *buf)
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
@@ -1946,7 +2072,7 @@ static ssize_t show_pwm_auto_spinup_min(struct device *dev,
 
 	ctl3 = data->block9[nr][LM93_PWM_CTL3];
 	ctl4 = data->block9[nr][LM93_PWM_CTL4];
-	return sprintf(buf,"%d\n",
+	return sprintf(buf, "%d\n",
 		       LM93_PWM_FROM_REG(ctl3 & 0x0f, (ctl4 & 0x07) ?
 			LM93_PWM_MAP_LO_FREQ : LM93_PWM_MAP_HI_FREQ));
 }
@@ -1958,17 +2084,22 @@ static ssize_t store_pwm_auto_spinup_min(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 ctl3, ctl4;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	ctl3 = lm93_read_byte(client,LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3));
-	ctl4 = lm93_read_byte(client,LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4));
-	ctl3 = (ctl3 & 0xf0) | 	LM93_PWM_TO_REG(val, (ctl4 & 0x07) ?
+	ctl3 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3));
+	ctl4 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL4));
+	ctl3 = (ctl3 & 0xf0) | LM93_PWM_TO_REG(val, (ctl4 & 0x07) ?
 			LM93_PWM_MAP_LO_FREQ :
 			LM93_PWM_MAP_HI_FREQ);
 	data->block9[nr][LM93_PWM_CTL3] = ctl3;
-	lm93_write_byte(client,LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3), ctl3);
+	lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3), ctl3);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -1985,7 +2116,7 @@ static ssize_t show_pwm_auto_spinup_time(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_SPINUP_TIME_FROM_REG(
+	return sprintf(buf, "%d\n", LM93_SPINUP_TIME_FROM_REG(
 				data->block9[nr][LM93_PWM_CTL3]));
 }
 
@@ -1996,14 +2127,19 @@ static ssize_t store_pwm_auto_spinup_time(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 ctl3;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
-	ctl3 = lm93_read_byte(client,LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3));
+	ctl3 = lm93_read_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3));
 	ctl3 = (ctl3 & 0x1f) | (LM93_SPINUP_TIME_TO_REG(val) << 5 & 0xe0);
 	data->block9[nr][LM93_PWM_CTL3] = ctl3;
-	lm93_write_byte(client,LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3), ctl3);
+	lm93_write_byte(client, LM93_REG_PWM_CTL(nr, LM93_PWM_CTL3), ctl3);
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -2019,7 +2155,7 @@ static ssize_t show_pwm_auto_prochot_ramp(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",
+	return sprintf(buf, "%d\n",
 		       LM93_RAMP_FROM_REG(data->pwm_ramp_ctl >> 4 & 0x0f));
 }
 
@@ -2029,8 +2165,13 @@ static ssize_t store_pwm_auto_prochot_ramp(struct device *dev,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 ramp;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	ramp = lm93_read_byte(client, LM93_REG_PWM_RAMP_CTL);
@@ -2048,7 +2189,7 @@ static ssize_t show_pwm_auto_vrdhot_ramp(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",
+	return sprintf(buf, "%d\n",
 		       LM93_RAMP_FROM_REG(data->pwm_ramp_ctl & 0x0f));
 }
 
@@ -2058,8 +2199,13 @@ static ssize_t store_pwm_auto_vrdhot_ramp(struct device *dev,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 ramp;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	ramp = lm93_read_byte(client, LM93_REG_PWM_RAMP_CTL);
@@ -2078,7 +2224,7 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_VID_FROM_REG(data->vid[nr]));
+	return sprintf(buf, "%d\n", LM93_VID_FROM_REG(data->vid[nr]));
 }
 
 static SENSOR_DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL, 0);
@@ -2089,7 +2235,7 @@ static ssize_t show_prochot(struct device *dev, struct device_attribute *attr,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",data->block4[nr].cur);
+	return sprintf(buf, "%d\n", data->block4[nr].cur);
 }
 
 static SENSOR_DEVICE_ATTR(prochot1, S_IRUGO, show_prochot, NULL, 0);
@@ -2100,7 +2246,7 @@ static ssize_t show_prochot_avg(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",data->block4[nr].avg);
+	return sprintf(buf, "%d\n", data->block4[nr].avg);
 }
 
 static SENSOR_DEVICE_ATTR(prochot1_avg, S_IRUGO, show_prochot_avg, NULL, 0);
@@ -2111,7 +2257,7 @@ static ssize_t show_prochot_max(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",data->prochot_max[nr]);
+	return sprintf(buf, "%d\n", data->prochot_max[nr]);
 }
 
 static ssize_t store_prochot_max(struct device *dev,
@@ -2121,7 +2267,12 @@ static ssize_t store_prochot_max(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->prochot_max[nr] = LM93_PROCHOT_TO_REG(val);
@@ -2143,7 +2294,7 @@ static ssize_t show_prochot_override(struct device *dev,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",
+	return sprintf(buf, "%d\n",
 		(data->prochot_override & prochot_override_mask[nr]) ? 1 : 0);
 }
 
@@ -2154,7 +2305,12 @@ static ssize_t store_prochot_override(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	if (val)
@@ -2178,11 +2334,11 @@ static ssize_t show_prochot_interval(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
 	u8 tmp;
-	if (nr==1)
+	if (nr == 1)
 		tmp = (data->prochot_interval & 0xf0) >> 4;
 	else
 		tmp = data->prochot_interval & 0x0f;
-	return sprintf(buf,"%d\n",LM93_INTERVAL_FROM_REG(tmp));
+	return sprintf(buf, "%d\n", LM93_INTERVAL_FROM_REG(tmp));
 }
 
 static ssize_t store_prochot_interval(struct device *dev,
@@ -2192,12 +2348,17 @@ static ssize_t store_prochot_interval(struct device *dev,
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
 	u8 tmp;
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	tmp = lm93_read_byte(client, LM93_REG_PROCHOT_INTERVAL);
-	if (nr==1)
+	if (nr == 1)
 		tmp = (tmp & 0x0f) | (LM93_INTERVAL_TO_REG(val) << 4);
 	else
 		tmp = (tmp & 0xf0) | LM93_INTERVAL_TO_REG(val);
@@ -2217,7 +2378,7 @@ static ssize_t show_prochot_override_duty_cycle(struct device *dev,
 						char *buf)
 {
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",data->prochot_override & 0x0f);
+	return sprintf(buf, "%d\n", data->prochot_override & 0x0f);
 }
 
 static ssize_t store_prochot_override_duty_cycle(struct device *dev,
@@ -2226,7 +2387,12 @@ static ssize_t store_prochot_override_duty_cycle(struct device *dev,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	data->prochot_override = (data->prochot_override & 0xf0) |
@@ -2245,7 +2411,7 @@ static ssize_t show_prochot_short(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",(data->config & 0x10) ? 1 : 0);
+	return sprintf(buf, "%d\n", (data->config & 0x10) ? 1 : 0);
 }
 
 static ssize_t store_prochot_short(struct device *dev,
@@ -2254,7 +2420,12 @@ static ssize_t store_prochot_short(struct device *dev,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm93_data *data = i2c_get_clientdata(client);
-	u32 val = simple_strtoul(buf, NULL, 10);
+	unsigned long val;
+	int err;
+
+	err = kstrtoul(buf, 10, &val);
+	if (err)
+		return err;
 
 	mutex_lock(&data->update_lock);
 	if (val)
@@ -2274,8 +2445,8 @@ static ssize_t show_vrdhot(struct device *dev, struct device_attribute *attr,
 {
 	int nr = (to_sensor_dev_attr(attr))->index;
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",
-		       data->block1.host_status_1 & (1 << (nr+4)) ? 1 : 0);
+	return sprintf(buf, "%d\n",
+		       data->block1.host_status_1 & (1 << (nr + 4)) ? 1 : 0);
 }
 
 static SENSOR_DEVICE_ATTR(vrdhot1, S_IRUGO, show_vrdhot, NULL, 0);
@@ -2285,7 +2456,7 @@ static ssize_t show_gpio(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_GPI_FROM_REG(data->gpi));
+	return sprintf(buf, "%d\n", LM93_GPI_FROM_REG(data->gpi));
 }
 
 static DEVICE_ATTR(gpio, S_IRUGO, show_gpio, NULL);
@@ -2294,7 +2465,7 @@ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {
 	struct lm93_data *data = lm93_update_device(dev);
-	return sprintf(buf,"%d\n",LM93_ALARMS_FROM_REG(data->block1));
+	return sprintf(buf, "%d\n", LM93_ALARMS_FROM_REG(data->block1));
 }
 
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
@@ -2494,13 +2665,13 @@ static void lm93_init_client(struct i2c_client *client)
 	lm93_write_byte(client, LM93_REG_CONFIG, reg | 0x01);
 
 	/* spin until ready */
-	for (i=0; i<20; i++) {
+	for (i = 0; i < 20; i++) {
 		msleep(10);
 		if ((lm93_read_byte(client, LM93_REG_CONFIG) & 0x80) == 0x80)
 			return;
 	}
 
-	dev_warn(&client->dev,"timed out waiting for sensor "
+	dev_warn(&client->dev, "timed out waiting for sensor "
 		 "chip to signal ready!\n");
 }
 
@@ -2540,7 +2711,7 @@ static int lm93_detect(struct i2c_client *client, struct i2c_board_info *info)
 	}
 
 	strlcpy(info->type, name, I2C_NAME_SIZE);
-	dev_dbg(&adapter->dev,"loading %s at %d,0x%02x\n",
+	dev_dbg(&adapter->dev, "loading %s at %d, 0x%02x\n",
 		client->name, i2c_adapter_id(client->adapter),
 		client->addr);
 
@@ -2593,7 +2764,7 @@ static int lm93_probe(struct i2c_client *client,
 
 	/* Register hwmon driver class */
 	data->hwmon_dev = hwmon_device_register(&client->dev);
-	if ( !IS_ERR(data->hwmon_dev))
+	if (!IS_ERR(data->hwmon_dev))
 		return 0;
 
 	err = PTR_ERR(data->hwmon_dev);
@@ -2635,20 +2806,9 @@ static struct i2c_driver lm93_driver = {
 	.address_list	= normal_i2c,
 };
 
-static int __init lm93_init(void)
-{
-	return i2c_add_driver(&lm93_driver);
-}
-
-static void __exit lm93_exit(void)
-{
-	i2c_del_driver(&lm93_driver);
-}
+module_i2c_driver(lm93_driver);
 
 MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>, "
 		"Hans J. Koch <hjk@hansjkoch.de>");
 MODULE_DESCRIPTION("LM93 driver");
 MODULE_LICENSE("GPL");
-
-module_init(lm93_init);
-module_exit(lm93_exit);