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hwmon: (tmp401) 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 change.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2024-07-09 13:53:37 -07:00
parent 381cfd6305
commit a0a16d960f
1 changed files with 5 additions and 12 deletions
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17
drivers/hwmon/tmp401.c
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@ -308,7 +308,9 @@ static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val
{
struct tmp401_data *data = dev_get_drvdata(dev);
struct regmap *regmap = data->regmap;
unsigned int regs[2] = { TMP401_TEMP_MSB[3][channel], TMP401_TEMP_CRIT_HYST };
unsigned int regval;
u16 regvals[2];
int reg, ret;
switch (attr) {
@ -325,20 +327,11 @@ static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val
*val = tmp401_register_to_temp(regval, data->extended_range);
break;
case hwmon_temp_crit_hyst:
mutex_lock(&data->update_lock);
reg = TMP401_TEMP_MSB[3][channel];
ret = regmap_read(regmap, reg, &regval);
if (ret < 0)
goto unlock;
*val = tmp401_register_to_temp(regval, data->extended_range);
ret = regmap_read(regmap, TMP401_TEMP_CRIT_HYST, &regval);
if (ret < 0)
goto unlock;
*val -= regval * 1000;
unlock:
mutex_unlock(&data->update_lock);
ret = regmap_multi_reg_read(regmap, regs, regvals, 2);
if (ret < 0)
return ret;
*val = tmp401_register_to_temp(regvals[0], data->extended_range) -
(regvals[1] * 1000);
break;
case hwmon_temp_fault:
case hwmon_temp_min_alarm: