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ACPI: bus: Introduce acpi_dev_get() and reuse it in ACPI code 

Introduce acpi_dev_get() to have a symmetrical API with acpi_dev_put()
and reuse both in ACPI code in drivers/acpi/.

While at it, use acpi_bus_put_acpi_device() in one place instead of
the above.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Andy Shevchenko 2021-04-13 01:23:58 +03:00 committed by Rafael J. Wysocki
parent 0205055811
commit 4cbaba4e3e
4 changed files with 15 additions and 11 deletions
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4
drivers/acpi/device_sysfs.c
View File

@ -376,12 +376,12 @@ eject_store(struct device *d, struct device_attribute *attr,
if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
return -ENODEV;
get_device(&acpi_device->dev);
acpi_dev_get(acpi_device);
status = acpi_hotplug_schedule(acpi_device, ACPI_OST_EC_OSPM_EJECT);
if (ACPI_SUCCESS(status))
return count;
put_device(&acpi_device->dev);
acpi_dev_put(acpi_device);
acpi_evaluate_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
return status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;

8
drivers/acpi/glue.c
View File

@ -190,7 +190,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev)
if (!acpi_dev)
return -EINVAL;
get_device(&acpi_dev->dev);
acpi_dev_get(acpi_dev);
get_device(dev);
physical_node = kzalloc(sizeof(*physical_node), GFP_KERNEL);
if (!physical_node) {
@ -217,7 +217,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev)
goto err;
put_device(dev);
put_device(&acpi_dev->dev);
acpi_dev_put(acpi_dev);
return 0;
}
if (pn->node_id == node_id) {
@ -257,7 +257,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev)
err:
ACPI_COMPANION_SET(dev, NULL);
put_device(dev);
put_device(&acpi_dev->dev);
acpi_dev_put(acpi_dev);
return retval;
}
EXPORT_SYMBOL_GPL(acpi_bind_one);
@ -285,7 +285,7 @@ int acpi_unbind_one(struct device *dev)
ACPI_COMPANION_SET(dev, NULL);
/* Drop references taken by acpi_bind_one(). */
put_device(dev);
put_device(&acpi_dev->dev);
acpi_dev_put(acpi_dev);
kfree(entry);
break;
}

9
drivers/acpi/scan.c
View File

@ -530,7 +530,7 @@ static void acpi_device_del_work_fn(struct work_struct *work_not_used)
* used by the device.
*/
acpi_power_transition(adev, ACPI_STATE_D3_COLD);
put_device(&adev->dev);
acpi_dev_put(adev);
}
}
@ -604,8 +604,7 @@ EXPORT_SYMBOL(acpi_bus_get_device);
static void get_acpi_device(void *dev)
{
if (dev)
get_device(&((struct acpi_device *)dev)->dev);
acpi_dev_get(dev);
}
struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle)
@ -615,7 +614,7 @@ struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle)
void acpi_bus_put_acpi_device(struct acpi_device *adev)
{
put_device(&adev->dev);
acpi_dev_put(adev);
}
static struct acpi_device_bus_id *acpi_device_bus_id_match(const char *dev_id)
@ -2355,7 +2354,7 @@ int __init acpi_scan_init(void)
acpi_detach_data(acpi_root->handle,
acpi_scan_drop_device);
acpi_device_del(acpi_root);
put_device(&acpi_root->dev);
acpi_bus_put_acpi_device(acpi_root);
goto out;
}
}

5
include/acpi/acpi_bus.h
View File

@ -694,6 +694,11 @@ acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv);
adev; \
adev = acpi_dev_get_next_match_dev(adev, hid, uid, hrv))
static inline struct acpi_device *acpi_dev_get(struct acpi_device *adev)
{
return adev ? to_acpi_device(get_device(&adev->dev)) : NULL;
}
static inline void acpi_dev_put(struct acpi_device *adev)
{
put_device(&adev->dev);