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hwmon: (max1619) Use inline functions instead of macros

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Macros evaluating their arguments more than once are evil.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Andrew Morton 2008-10-17 17:51:16 +02:00 committed by Jean Delvare
parent 4ed1077953
commit a80e8ee667
1 changed files with 12 additions and 5 deletions
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17
drivers/hwmon/max1619.c
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@ -69,11 +69,18 @@ I2C_CLIENT_INSMOD_1(max1619);
#define MAX1619_REG_W_TCRIT_HYST 0x13
/*
* Conversions and various macros
* Conversions
*/
#define TEMP_FROM_REG(val) ((val & 0x80 ? val-0x100 : val) * 1000)
#define TEMP_TO_REG(val) ((val < 0 ? val+0x100*1000 : val) / 1000)
static int temp_from_reg(int val)
{
return (val & 0x80 ? val-0x100 : val) * 1000;
}
static int temp_to_reg(int val)
{
return (val < 0 ? val+0x100*1000 : val) / 1000;
}
/*
* Functions declaration
@ -135,7 +142,7 @@ struct max1619_data {
static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct max1619_data *data = max1619_update_device(dev); \
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->value)); \
return sprintf(buf, "%d\n", temp_from_reg(data->value)); \
}
show_temp(temp_input1);
show_temp(temp_input2);
@ -153,7 +160,7 @@ static ssize_t set_##value(struct device *dev, struct device_attribute *attr, co
long val = simple_strtol(buf, NULL, 10); \
\
mutex_lock(&data->update_lock); \
data->value = TEMP_TO_REG(val); \
data->value = temp_to_reg(val); \
i2c_smbus_write_byte_data(client, reg, data->value); \
mutex_unlock(&data->update_lock); \
return count; \