From: Rafael J. Wysocki <[email protected]>
Rework the _show() callback functions for the trip point temperature,
hysteresis and type attributes to avoid copying the values of struct
thermal_trip fields that they do not use and to make them carry out
validation checks with the help of check_thermal_zone_and_trip_id(),
like the corresponding _store() callback functions.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <[email protected]>
---
drivers/thermal/thermal_sysfs.c | 55 ++++++++++++++++++++--------------------
1 file changed, 28 insertions(+), 27 deletions(-)
Index: linux-pm/drivers/thermal/thermal_sysfs.c
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_sysfs.c
+++ linux-pm/drivers/thermal/thermal_sysfs.c
@@ -96,25 +96,25 @@ trip_point_type_show(struct device *dev,
char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
- struct thermal_trip trip;
- int trip_id, result;
+ enum thermal_trip_type type;
+ int trip_id, ret;
if (sscanf(attr->attr.name, "trip_point_%d_type", &trip_id) != 1)
return -EINVAL;
mutex_lock(&tz->lock);
- if (device_is_registered(dev))
- result = __thermal_zone_get_trip(tz, trip_id, &trip);
- else
- result = -ENODEV;
+ ret = check_thermal_zone_and_trip_id(dev, tz, trip_id);
+ if (ret) {
+ mutex_unlock(&tz->lock);
+ return ret;
+ }
- mutex_unlock(&tz->lock);
+ type = tz->trips[trip_id].type;
- if (result)
- return result;
+ mutex_unlock(&tz->lock);
- switch (trip.type) {
+ switch (type) {
case THERMAL_TRIP_CRITICAL:
return sprintf(buf, "critical\n");
case THERMAL_TRIP_HOT:
@@ -175,25 +175,24 @@ trip_point_temp_show(struct device *dev,
char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
- struct thermal_trip trip;
- int trip_id, ret;
+ int trip_id, ret, temp;
if (sscanf(attr->attr.name, "trip_point_%d_temp", &trip_id) != 1)
return -EINVAL;
mutex_lock(&tz->lock);
- if (device_is_registered(dev))
- ret = __thermal_zone_get_trip(tz, trip_id, &trip);
- else
- ret = -ENODEV;
+ ret = check_thermal_zone_and_trip_id(dev, tz, trip_id);
+ if (ret) {
+ mutex_unlock(&tz->lock);
+ return ret;
+ }
- mutex_unlock(&tz->lock);
+ temp = tz->trips[trip_id].temperature;
- if (ret)
- return ret;
+ mutex_unlock(&tz->lock);
- return sprintf(buf, "%d\n", trip.temperature);
+ return sprintf(buf, "%d\n", temp);
}
static ssize_t
@@ -243,22 +242,24 @@ trip_point_hyst_show(struct device *dev,
char *buf)
{
struct thermal_zone_device *tz = to_thermal_zone(dev);
- struct thermal_trip trip;
- int trip_id, ret;
+ int trip_id, ret, hyst;
if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip_id) != 1)
return -EINVAL;
mutex_lock(&tz->lock);
- if (device_is_registered(dev))
- ret = __thermal_zone_get_trip(tz, trip_id, &trip);
- else
- ret = -ENODEV;
+ ret = check_thermal_zone_and_trip_id(dev, tz, trip_id);
+ if (ret) {
+ mutex_unlock(&tz->lock);
+ return ret;
+ }
+
+ hyst = tz->trips[trip_id].hysteresis;
mutex_unlock(&tz->lock);
- return ret ? ret : sprintf(buf, "%d\n", trip.hysteresis);
+ return ret ? ret : sprintf(buf, "%d\n", hyst);
}
static ssize_t