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Subject[PATCH v2] hwmon: (asus_wmi_sensors) Save a few bytes of memory
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The first 'for' loop of asus_wmi_configure_sensor_setup() only computes
the number and type of sensors that exist in the system.

Here, the 'temp_sensor' structure is only used to store the data collected
by asus_wmi_sensor_info(). There is no point in using a devm_ variant for
this allocation. This wastes some memory for no good reason.

Use the stack instead.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
v1 -> v2: Use the stack instead of kmalloc/kfree to simplify even more the
code (Guenter Roeck)
---
drivers/hwmon/asus_wmi_sensors.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/hwmon/asus_wmi_sensors.c b/drivers/hwmon/asus_wmi_sensors.c
index 9e935e34c998..6e8a908171f0 100644
--- a/drivers/hwmon/asus_wmi_sensors.c
+++ b/drivers/hwmon/asus_wmi_sensors.c
@@ -514,22 +514,20 @@ static int asus_wmi_configure_sensor_setup(struct device *dev,
int i, idx;
int err;

- temp_sensor = devm_kcalloc(dev, 1, sizeof(*temp_sensor), GFP_KERNEL);
- if (!temp_sensor)
- return -ENOMEM;
-
for (i = 0; i < sensor_data->wmi.sensor_count; i++) {
- err = asus_wmi_sensor_info(i, temp_sensor);
+ struct asus_wmi_sensor_info sensor;
+
+ err = asus_wmi_sensor_info(i, &sensor);
if (err)
return err;

- switch (temp_sensor->data_type) {
+ switch (sensor.data_type) {
case TEMPERATURE_C:
case VOLTAGE:
case CURRENT:
case FAN_RPM:
case WATER_FLOW:
- type = asus_data_types[temp_sensor->data_type];
+ type = asus_data_types[sensor.data_type];
if (!nr_count[type])
nr_types++;
nr_count[type]++;
--
2.34.1
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