redonkable/alistair23-linux
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Merge branch 'acpi-fixes'

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* acpi-fixes:
  ACPI / PM: Drop two functions that are not used any more
  ATA / ACPI: remove power dependent device handling
  ACPI / power: Drop automaitc resume of power resource dependent devices
  ACPI: remove /proc/acpi/event from ACPI_BUTTON help
  ACPI / power: Release resource_lock after acpi_power_get_state() return error
This commit is contained in:
Rafael J. Wysocki 2013-10-18 13:42:10 +02:00
parent bdbff71653 2421ad48f4
commit 981984cbd0
8 changed files with 7 additions and 188 deletions
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6
drivers/acpi/Kconfig
View file

@ -123,9 +123,9 @@ config ACPI_BUTTON
default y
help
This driver handles events on the power, sleep, and lid buttons.
A daemon reads /proc/acpi/event and perform user-defined actions
such as shutting down the system. This is necessary for
software-controlled poweroff.
A daemon reads events from input devices or via netlink and
performs user-defined actions such as shutting down the system.
This is necessary for software-controlled poweroff.
To compile this driver as a module, choose M here:
the module will be called button.

56
drivers/acpi/device_pm.c
View file

@ -1025,60 +1025,4 @@ void acpi_dev_pm_detach(struct device *dev, bool power_off)
}
}
EXPORT_SYMBOL_GPL(acpi_dev_pm_detach);
/**
* acpi_dev_pm_add_dependent - Add physical device depending for PM.
* @handle: Handle of ACPI device node.
* @depdev: Device depending on that node for PM.
*/
void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev)
{
struct acpi_device_physical_node *dep;
struct acpi_device *adev;
if (!depdev || acpi_bus_get_device(handle, &adev))
return;
mutex_lock(&adev->physical_node_lock);
list_for_each_entry(dep, &adev->power_dependent, node)
if (dep->dev == depdev)
goto out;
dep = kzalloc(sizeof(*dep), GFP_KERNEL);
if (dep) {
dep->dev = depdev;
list_add_tail(&dep->node, &adev->power_dependent);
}
out:
mutex_unlock(&adev->physical_node_lock);
}
EXPORT_SYMBOL_GPL(acpi_dev_pm_add_dependent);
/**
* acpi_dev_pm_remove_dependent - Remove physical device depending for PM.
* @handle: Handle of ACPI device node.
* @depdev: Device depending on that node for PM.
*/
void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev)
{
struct acpi_device_physical_node *dep;
struct acpi_device *adev;
if (!depdev || acpi_bus_get_device(handle, &adev))
return;
mutex_lock(&adev->physical_node_lock);
list_for_each_entry(dep, &adev->power_dependent, node)
if (dep->dev == depdev) {
list_del(&dep->node);
kfree(dep);
break;
}
mutex_unlock(&adev->physical_node_lock);
}
EXPORT_SYMBOL_GPL(acpi_dev_pm_remove_dependent);
#endif /* CONFIG_PM */

104
drivers/acpi/power.c
View file

@ -59,16 +59,9 @@ ACPI_MODULE_NAME("power");
#define ACPI_POWER_RESOURCE_STATE_ON 0x01
#define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF
struct acpi_power_dependent_device {
struct list_head node;
struct acpi_device *adev;
struct work_struct work;
};
struct acpi_power_resource {
struct acpi_device device;
struct list_head list_node;
struct list_head dependent;
char *name;
u32 system_level;
u32 order;
@ -233,32 +226,6 @@ static int acpi_power_get_list_state(struct list_head *list, int *state)
return 0;
}
static void acpi_power_resume_dependent(struct work_struct *work)
{
struct acpi_power_dependent_device *dep;
struct acpi_device_physical_node *pn;
struct acpi_device *adev;
int state;
dep = container_of(work, struct acpi_power_dependent_device, work);
adev = dep->adev;
if (acpi_power_get_inferred_state(adev, &state))
return;
if (state > ACPI_STATE_D0)
return;
mutex_lock(&adev->physical_node_lock);
list_for_each_entry(pn, &adev->physical_node_list, node)
pm_request_resume(pn->dev);
list_for_each_entry(pn, &adev->power_dependent, node)
pm_request_resume(pn->dev);
mutex_unlock(&adev->physical_node_lock);
}
static int __acpi_power_on(struct acpi_power_resource *resource)
{
acpi_status status = AE_OK;
@ -283,14 +250,8 @@ static int acpi_power_on_unlocked(struct acpi_power_resource *resource)
resource->name));
} else {
result = __acpi_power_on(resource);
if (result) {
if (result)
resource->ref_count--;
} else {
struct acpi_power_dependent_device *dep;
list_for_each_entry(dep, &resource->dependent, node)
schedule_work(&dep->work);
}
}
return result;
}
@ -390,52 +351,6 @@ static int acpi_power_on_list(struct list_head *list)
return result;
}
static void acpi_power_add_dependent(struct acpi_power_resource *resource,
struct acpi_device *adev)
{
struct acpi_power_dependent_device *dep;
mutex_lock(&resource->resource_lock);
list_for_each_entry(dep, &resource->dependent, node)
if (dep->adev == adev)
goto out;
dep = kzalloc(sizeof(*dep), GFP_KERNEL);
if (!dep)
goto out;
dep->adev = adev;
INIT_WORK(&dep->work, acpi_power_resume_dependent);
list_add_tail(&dep->node, &resource->dependent);
out:
mutex_unlock(&resource->resource_lock);
}
static void acpi_power_remove_dependent(struct acpi_power_resource *resource,
struct acpi_device *adev)
{
struct acpi_power_dependent_device *dep;
struct work_struct *work = NULL;
mutex_lock(&resource->resource_lock);
list_for_each_entry(dep, &resource->dependent, node)
if (dep->adev == adev) {
list_del(&dep->node);
work = &dep->work;
break;
}
mutex_unlock(&resource->resource_lock);
if (work) {
cancel_work_sync(work);
kfree(dep);
}
}
static struct attribute *attrs[] = {
NULL,
};
@ -524,8 +439,6 @@ static void acpi_power_expose_hide(struct acpi_device *adev,
void acpi_power_add_remove_device(struct acpi_device *adev, bool add)
{
struct acpi_device_power_state *ps;
struct acpi_power_resource_entry *entry;
int state;
if (adev->wakeup.flags.valid)
@ -535,16 +448,6 @@ void acpi_power_add_remove_device(struct acpi_device *adev, bool add)
if (!adev->power.flags.power_resources)
return;
ps = &adev->power.states[ACPI_STATE_D0];
list_for_each_entry(entry, &ps->resources, node) {
struct acpi_power_resource *resource = entry->resource;
if (add)
acpi_power_add_dependent(resource, adev);
else
acpi_power_remove_dependent(resource, adev);
}
for (state = ACPI_STATE_D0; state <= ACPI_STATE_D3_HOT; state++)
acpi_power_expose_hide(adev,
&adev->power.states[state].resources,
@ -882,7 +785,6 @@ int acpi_add_power_resource(acpi_handle handle)
acpi_init_device_object(device, handle, ACPI_BUS_TYPE_POWER,
ACPI_STA_DEFAULT);
mutex_init(&resource->resource_lock);
INIT_LIST_HEAD(&resource->dependent);
INIT_LIST_HEAD(&resource->list_node);
resource->name = device->pnp.bus_id;
strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
@ -936,8 +838,10 @@ void acpi_resume_power_resources(void)
mutex_lock(&resource->resource_lock);
result = acpi_power_get_state(resource->device.handle, &state);
if (result)
if (result) {
mutex_unlock(&resource->resource_lock);
continue;
}
if (state == ACPI_POWER_RESOURCE_STATE_OFF
&& resource->ref_count) {

1
drivers/acpi/scan.c
View file

@ -999,7 +999,6 @@ int acpi_device_add(struct acpi_device *device,
INIT_LIST_HEAD(&device->wakeup_list);
INIT_LIST_HEAD(&device->physical_node_list);
mutex_init(&device->physical_node_lock);
INIT_LIST_HEAD(&device->power_dependent);
new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
if (!new_bus_id) {

14
drivers/ata/libata-acpi.c
View file

@ -1035,17 +1035,3 @@ void ata_acpi_on_disable(struct ata_device *dev)
{
ata_acpi_clear_gtf(dev);
}
void ata_scsi_acpi_bind(struct ata_device *dev)
{
acpi_handle handle = ata_dev_acpi_handle(dev);
if (handle)
acpi_dev_pm_add_dependent(handle, &dev->sdev->sdev_gendev);
}
void ata_scsi_acpi_unbind(struct ata_device *dev)
{
acpi_handle handle = ata_dev_acpi_handle(dev);
if (handle)
acpi_dev_pm_remove_dependent(handle, &dev->sdev->sdev_gendev);
}

3
drivers/ata/libata-scsi.c
View file

@ -3679,7 +3679,6 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
if (!IS_ERR(sdev)) {
dev->sdev = sdev;
scsi_device_put(sdev);
ata_scsi_acpi_bind(dev);
} else {
dev->sdev = NULL;
}
@ -3767,8 +3766,6 @@ static void ata_scsi_remove_dev(struct ata_device *dev)
struct scsi_device *sdev;
unsigned long flags;
ata_scsi_acpi_unbind(dev);
/* Alas, we need to grab scan_mutex to ensure SCSI device
* state doesn't change underneath us and thus
* scsi_device_get() always succeeds. The mutex locking can

4
drivers/ata/libata.h
View file

@ -121,8 +121,6 @@ extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
extern void ata_acpi_bind_port(struct ata_port *ap);
extern void ata_acpi_bind_dev(struct ata_device *dev);
extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
extern void ata_scsi_acpi_bind(struct ata_device *dev);
extern void ata_scsi_acpi_unbind(struct ata_device *dev);
#else
static inline void ata_acpi_dissociate(struct ata_host *host) { }
static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
@ -133,8 +131,6 @@ static inline void ata_acpi_set_state(struct ata_port *ap,
pm_message_t state) { }
static inline void ata_acpi_bind_port(struct ata_port *ap) {}
static inline void ata_acpi_bind_dev(struct ata_device *dev) {}
static inline void ata_scsi_acpi_bind(struct ata_device *dev) {}
static inline void ata_scsi_acpi_unbind(struct ata_device *dev) {}
#endif
/* libata-scsi.c */

7
include/acpi/acpi_bus.h
View file

@ -311,7 +311,6 @@ struct acpi_device {
unsigned int physical_node_count;
struct list_head physical_node_list;
struct mutex physical_node_lock;
struct list_head power_dependent;
void (*remove)(struct acpi_device *);
};
@ -456,8 +455,6 @@ acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
acpi_notify_handler handler);
int acpi_pm_device_sleep_state(struct device *, int *, int);
void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
#else
static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
acpi_notify_handler handler,
@ -478,10 +475,6 @@ static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
m : ACPI_STATE_D0;
}
static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
struct device *depdev) {}
static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
struct device *depdev) {}
#endif
#ifdef CONFIG_PM_RUNTIME