diff options
| author | Matthias Kaehlcke <mka@chromium.org> | 2015-02-20 18:10:08 -0800 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2015-06-05 15:45:39 -0700 |
| commit | 94f669e7915a586889f8ad1d2e8c1c8c79c042d3 (patch) | |
| tree | cf7a6128089213bac5378cd13561d68a73971eeb | |
| parent | 2b42b5a716d5fe941c950e30a68251f24197606d (diff) | |
thermal: Make sysfs attributes of cooling devices default attributes
Default attributes are created when the device is registered. Attributes
created after device registration can lead to race conditions, where user space
(e.g. udev) sees the device but not the attributes.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
(cherry picked from commit 2dc10f8963e6a03a1a75deafe1d1984bafab08dd)
Signed-off-by: Kevin Hilman <khilman@linaro.org>
| -rw-r--r-- | drivers/thermal/thermal_core.c | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 84fdf0792e27..55e80880d5ee 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -899,6 +899,22 @@ thermal_cooling_device_trip_point_show(struct device *dev, return sprintf(buf, "%d\n", instance->trip); } +static struct attribute *cooling_device_attrs[] = { + &dev_attr_cdev_type.attr, + &dev_attr_max_state.attr, + &dev_attr_cur_state.attr, + NULL, +}; + +static const struct attribute_group cooling_device_attr_group = { + .attrs = cooling_device_attrs, +}; + +static const struct attribute_group *cooling_device_attr_groups[] = { + &cooling_device_attr_group, + NULL, +}; + /* Device management */ /** @@ -1128,6 +1144,7 @@ __thermal_cooling_device_register(struct device_node *np, cdev->ops = ops; cdev->updated = false; cdev->device.class = &thermal_class; + cdev->device.groups = cooling_device_attr_groups; cdev->devdata = devdata; dev_set_name(&cdev->device, "cooling_device%d", cdev->id); result = device_register(&cdev->device); @@ -1137,21 +1154,6 @@ __thermal_cooling_device_register(struct device_node *np, return ERR_PTR(result); } - /* sys I/F */ - if (type) { - result = device_create_file(&cdev->device, &dev_attr_cdev_type); - if (result) - goto unregister; - } - - result = device_create_file(&cdev->device, &dev_attr_max_state); - if (result) - goto unregister; - - result = device_create_file(&cdev->device, &dev_attr_cur_state); - if (result) - goto unregister; - /* Add 'this' new cdev to the global cdev list */ mutex_lock(&thermal_list_lock); list_add(&cdev->node, &thermal_cdev_list); @@ -1161,11 +1163,6 @@ __thermal_cooling_device_register(struct device_node *np, bind_cdev(cdev); return cdev; - -unregister: - release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id); - device_unregister(&cdev->device); - return ERR_PTR(result); } /** |