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drm/radeon: properly unregister hwmon interface (v2)

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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@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2014-04-15 12:44:32 -04:00 committed by Christian König
parent 7e95cfb0b7
commit cb3e4e7c59
1 changed files with 15 additions and 6 deletions
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21
drivers/gpu/drm/radeon/radeon_pm.c
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@ -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);
}