diff mbox series

[3/6] hwmon: (adt7x10) Use multi-byte regmap operations

Message ID 20240716230050.2049534-4-linux@roeck-us.net (mailing list archive)
State Accepted
Headers show
Series hwmon: Use multi-byte regmap operations | expand

Commit Message

Guenter Roeck July 16, 2024, 11 p.m. UTC 
Use multi-byte regmap operations where possible to reduce code size
and the need for mutex protection.

No functional changes.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/hwmon/adt7x10.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

Comments

Tzung-Bi Shih July 17, 2024, 1:35 p.m. UTC | #1 
On Tue, Jul 16, 2024 at 04:00:47PM -0700, Guenter Roeck wrote:
> 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>
diff mbox series

Patch

diff --git a/drivers/hwmon/adt7x10.c b/drivers/hwmon/adt7x10.c
index 6701920de17f..2d329391ed3f 100644
--- a/drivers/hwmon/adt7x10.c
+++ b/drivers/hwmon/adt7x10.c
@@ -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;
 }