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hwmon: (adt7x10) Use multi-byte regmap operations

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Use multi-byte regmap operations where possible to reduce code size
and the need for mutex protection.

No functional changes.

Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2024-07-09 14:06:17 -07:00
parent 7b4882d9b8
commit 4ce612b16e
1 changed files with 6 additions and 12 deletions
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18
drivers/hwmon/adt7x10.c
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@ -170,21 +170,15 @@ static int adt7x10_temp_write(struct adt7x10_data *data, int index, long temp)
static int adt7x10_hyst_read(struct adt7x10_data *data, int index, long *val)
{
int hyst, temp, ret;
unsigned int regs[2] = {ADT7X10_T_HYST, ADT7X10_REG_TEMP[index]};
int hyst, ret;
u16 regdata[2];
mutex_lock(&data->update_lock);
ret = regmap_read(data->regmap, ADT7X10_T_HYST, &hyst);
if (ret) {
mutex_unlock(&data->update_lock);
return ret;
}
ret = regmap_read(data->regmap, ADT7X10_REG_TEMP[index], &temp);
mutex_unlock(&data->update_lock);
ret = regmap_multi_reg_read(data->regmap, regs, regdata, 2);
if (ret)
return ret;
hyst = (hyst & ADT7X10_T_HYST_MASK) * 1000;
hyst = (regdata[0] & ADT7X10_T_HYST_MASK) * 1000;
/*
* hysteresis is stored as a 4 bit offset in the device, convert it
@ -194,7 +188,7 @@ static int adt7x10_hyst_read(struct adt7x10_data *data, int index, long *val)
if (index == adt7x10_t_alarm_low)
hyst = -hyst;
*val = ADT7X10_REG_TO_TEMP(data, temp) - hyst;
*val = ADT7X10_REG_TO_TEMP(data, regdata[1]) - hyst;
return 0;
}