hwmon: (lm92) Fix checkpatch issues
Fixed:
ERROR: code indent should use tabs where possible
ERROR: do not use assignment in if condition
ERROR: spaces required around that '<' (ctx:VxV)
ERROR: spaces required around that '=' (ctx:VxV)
ERROR: spaces required around that '*=' (ctx:VxV)
ERROR: trailing whitespace
WARNING: line over 80 characters
WARNING: please, no space before tabs
WARNING: please, no spaces at the start of a line
WARNING: simple_strtol is obsolete, use kstrtol instead
Modify multi-line comments to follow Documentation/CodingStyle.
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/lm92.c b/drivers/hwmon/lm92.c
index 92f2d46..fdc691a 100644
--- a/drivers/hwmon/lm92.c
+++ b/drivers/hwmon/lm92.c
@@ -49,8 +49,10 @@
#include <linux/err.h>
#include <linux/mutex.h>
-/* The LM92 and MAX6635 have 2 two-state pins for address selection,
- resulting in 4 possible addresses. */
+/*
+ * The LM92 and MAX6635 have 2 two-state pins for address selection,
+ * resulting in 4 possible addresses.
+ */
static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
I2C_CLIENT_END };
@@ -63,11 +65,13 @@
#define LM92_REG_TEMP_HIGH 0x05 /* 16-bit, RW */
#define LM92_REG_MAN_ID 0x07 /* 16-bit, RO, LM92 only */
-/* The LM92 uses signed 13-bit values with LSB = 0.0625 degree Celsius,
- left-justified in 16-bit registers. No rounding is done, with such
- a resolution it's just not worth it. Note that the MAX6635 doesn't
- make use of the 4 lower bits for limits (i.e. effective resolution
- for limits is 1 degree Celsius). */
+/*
+ * The LM92 uses signed 13-bit values with LSB = 0.0625 degree Celsius,
+ * left-justified in 16-bit registers. No rounding is done, with such
+ * a resolution it's just not worth it. Note that the MAX6635 doesn't
+ * make use of the 4 lower bits for limits (i.e. effective resolution
+ * for limits is 1 degree Celsius).
+ */
static inline int TEMP_FROM_REG(s16 reg)
{
return reg / 8 * 625 / 10;
@@ -138,7 +142,8 @@
}
#define show_temp(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
+static ssize_t show_##value(struct device *dev, struct device_attribute *attr, \
+ char *buf) \
{ \
struct lm92_data *data = lm92_update_device(dev); \
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->value)); \
@@ -149,13 +154,17 @@
show_temp(temp1_max);
#define set_temp(value, reg) \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, \
+static ssize_t set_##value(struct device *dev, struct device_attribute *attr, \
+ const char *buf, \
size_t count) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm92_data *data = i2c_get_clientdata(client); \
- long val = simple_strtol(buf, NULL, 10); \
- \
+ long val; \
+ int err = kstrtol(buf, 10, &val); \
+ if (err) \
+ return err; \
+\
mutex_lock(&data->update_lock); \
data->value = TEMP_TO_REG(val); \
i2c_smbus_write_word_swapped(client, reg, data->value); \
@@ -166,31 +175,40 @@
set_temp(temp1_min, LM92_REG_TEMP_LOW);
set_temp(temp1_max, LM92_REG_TEMP_HIGH);
-static ssize_t show_temp1_crit_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp1_crit_hyst(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct lm92_data *data = lm92_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp1_crit)
- TEMP_FROM_REG(data->temp1_hyst));
}
-static ssize_t show_temp1_max_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp1_max_hyst(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct lm92_data *data = lm92_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp1_max)
- TEMP_FROM_REG(data->temp1_hyst));
}
-static ssize_t show_temp1_min_hyst(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_temp1_min_hyst(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct lm92_data *data = lm92_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp1_min)
+ TEMP_FROM_REG(data->temp1_hyst));
}
-static ssize_t set_temp1_crit_hyst(struct device *dev, struct device_attribute *attr, const char *buf,
- size_t count)
+static ssize_t set_temp1_crit_hyst(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm92_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->temp1_hyst = TEMP_FROM_REG(data->temp1_crit) - val;
@@ -200,7 +218,8 @@
return count;
}
-static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
struct lm92_data *data = lm92_update_device(dev);
return sprintf(buf, "%d\n", ALARMS_FROM_REG(data->temp1_input));
@@ -246,26 +265,30 @@
config & 0xFE);
}
-/* The MAX6635 has no identification register, so we have to use tricks
- to identify it reliably. This is somewhat slow.
- Note that we do NOT rely on the 2 MSB of the configuration register
- always reading 0, as suggested by the datasheet, because it was once
- reported not to be true. */
+/*
+ * The MAX6635 has no identification register, so we have to use tricks
+ * to identify it reliably. This is somewhat slow.
+ * Note that we do NOT rely on the 2 MSB of the configuration register
+ * always reading 0, as suggested by the datasheet, because it was once
+ * reported not to be true.
+ */
static int max6635_check(struct i2c_client *client)
{
u16 temp_low, temp_high, temp_hyst, temp_crit;
u8 conf;
int i;
- /* No manufacturer ID register, so a read from this address will
- always return the last read value. */
+ /*
+ * No manufacturer ID register, so a read from this address will
+ * always return the last read value.
+ */
temp_low = i2c_smbus_read_word_data(client, LM92_REG_TEMP_LOW);
if (i2c_smbus_read_word_data(client, LM92_REG_MAN_ID) != temp_low)
return 0;
temp_high = i2c_smbus_read_word_data(client, LM92_REG_TEMP_HIGH);
if (i2c_smbus_read_word_data(client, LM92_REG_MAN_ID) != temp_high)
return 0;
-
+
/* Limits are stored as integer values (signed, 9-bit). */
if ((temp_low & 0x7f00) || (temp_high & 0x7f00))
return 0;
@@ -274,22 +297,24 @@
if ((temp_hyst & 0x7f00) || (temp_crit & 0x7f00))
return 0;
- /* Registers addresses were found to cycle over 16-byte boundaries.
- We don't test all registers with all offsets so as to save some
- reads and time, but this should still be sufficient to dismiss
- non-MAX6635 chips. */
+ /*
+ * Registers addresses were found to cycle over 16-byte boundaries.
+ * We don't test all registers with all offsets so as to save some
+ * reads and time, but this should still be sufficient to dismiss
+ * non-MAX6635 chips.
+ */
conf = i2c_smbus_read_byte_data(client, LM92_REG_CONFIG);
- for (i=16; i<96; i*=2) {
+ for (i = 16; i < 96; i *= 2) {
if (temp_hyst != i2c_smbus_read_word_data(client,
- LM92_REG_TEMP_HYST + i - 16)
+ LM92_REG_TEMP_HYST + i - 16)
|| temp_crit != i2c_smbus_read_word_data(client,
- LM92_REG_TEMP_CRIT + i)
+ LM92_REG_TEMP_CRIT + i)
|| temp_low != i2c_smbus_read_word_data(client,
LM92_REG_TEMP_LOW + i + 16)
|| temp_high != i2c_smbus_read_word_data(client,
- LM92_REG_TEMP_HIGH + i + 32)
+ LM92_REG_TEMP_HIGH + i + 32)
|| conf != i2c_smbus_read_byte_data(client,
- LM92_REG_CONFIG + i))
+ LM92_REG_CONFIG + i))
return 0;
}
@@ -362,7 +387,8 @@
lm92_init_client(new_client);
/* Register sysfs hooks */
- if ((err = sysfs_create_group(&new_client->dev.kobj, &lm92_group)))
+ err = sysfs_create_group(&new_client->dev.kobj, &lm92_group);
+ if (err)
goto exit_free;
data->hwmon_dev = hwmon_device_register(&new_client->dev);