Am 15.04.2014 18:44, schrieb Alex Deucher:
> Need to properly unregister the hwmon device on driver
> unload.
>
> v2: minor clean up
>
> bug:
> https://bugzilla.kernel.org/show_bug.cgi?id=73931
>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> Cc: stable at vger.kernel.org
Added to my 3.15 queue.
Sorry for the delay, those patches somehow got lost in my inbox.
Christian.
> ---
> drivers/gpu/drm/radeon/radeon_pm.c | 21 +++++++++++++++------
> 1 file changed, 15 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_pm.c
> b/drivers/gpu/drm/radeon/radeon_pm.c
> index ee738a5..e0a664d 100644
> --- a/drivers/gpu/drm/radeon/radeon_pm.c
> +++ b/drivers/gpu/drm/radeon/radeon_pm.c
> @@ -603,7 +603,6 @@ static const struct attribute_group *hwmon_groups[] = {
> static int radeon_hwmon_init(struct radeon_device *rdev)
> {
> int err = 0;
> - struct device *hwmon_dev;
>
> switch (rdev->pm.int_thermal_type) {
> case THERMAL_TYPE_RV6XX:
> @@ -616,11 +615,11 @@ static int radeon_hwmon_init(struct radeon_device *rdev)
> case THERMAL_TYPE_KV:
> if (rdev->asic->pm.get_temperature == NULL)
> return err;
> - hwmon_dev = hwmon_device_register_with_groups(rdev->dev,
> - "radeon", rdev,
> - hwmon_groups);
> - if (IS_ERR(hwmon_dev)) {
> - err = PTR_ERR(hwmon_dev);
> + rdev->pm.int_hwmon_dev =
> hwmon_device_register_with_groups(rdev->dev,
> +
> "radeon", rdev,
> +
> hwmon_groups);
> + if (IS_ERR(rdev->pm.int_hwmon_dev)) {
> + err = PTR_ERR(rdev->pm.int_hwmon_dev);
> dev_err(rdev->dev,
> "Unable to register hwmon device: %d\n", err);
> }
> @@ -632,6 +631,12 @@ static int radeon_hwmon_init(struct radeon_device *rdev)
> return err;
> }
>
> +static void radeon_hwmon_fini(struct radeon_device *rdev)
> +{
> + if (rdev->pm.int_hwmon_dev)
> + hwmon_device_unregister(rdev->pm.int_hwmon_dev);
> +}
> +
> static void radeon_dpm_thermal_work_handler(struct work_struct *work)
> {
> struct radeon_device *rdev =
> @@ -1353,6 +1358,8 @@ static void radeon_pm_fini_old(struct radeon_device
> *rdev)
> device_remove_file(rdev->dev, &dev_attr_power_method);
> }
>
> + radeon_hwmon_fini(rdev);
> +
> if (rdev->pm.power_state)
> kfree(rdev->pm.power_state);
> }
> @@ -1372,6 +1379,8 @@ static void radeon_pm_fini_dpm(struct radeon_device
> *rdev)
> }
> radeon_dpm_fini(rdev);
>
> + radeon_hwmon_fini(rdev);
> +
> if (rdev->pm.power_state)
> kfree(rdev->pm.power_state);
> }
