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Merge branch 'acpi-pci-hotplug'

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* acpi-pci-hotplug: (34 commits)
  ACPI / PM: Hold acpi_scan_lock over system PM transitions
  ACPI / hotplug / PCI: Fix NULL pointer dereference in cleanup_bridge()
  PCI / ACPI: Use dev_dbg() instead of dev_info() in acpi_pci_set_power_state()
  ACPI / hotplug / PCI: Get rid of check_sub_bridges()
  ACPI / hotplug / PCI: Clean up bridge_mutex usage
  ACPI / hotplug / PCI: Redefine enable_device() and disable_device()
  ACPI / hotplug / PCI: Sanitize acpiphp_get_(latch)|(adapter)_status()
  ACPI / hotplug / PCI: Get rid of unused constants in acpiphp.h
  ACPI / hotplug / PCI: Check for new devices on enabled slots
  ACPI / hotplug / PCI: Allow slots without new devices to be rescanned
  ACPI / hotplug / PCI: Do not check SLOT_ENABLED in enable_device()
  ACPI / hotplug / PCI: Do not exectute _PS0 and _PS3 directly
  ACPI / hotplug / PCI: Do not queue up event handling work items in vain
  ACPI / hotplug / PCI: Consolidate slot disabling and ejecting
  ACPI / hotplug / PCI: Drop redundant checks from check_hotplug_bridge()
  ACPI / hotplug / PCI: Rework namespace scanning and trimming routines
  ACPI / hotplug / PCI: Store parent in functions and bus in slots
  ACPI / hotplug / PCI: Drop handle field from struct acpiphp_bridge
  ACPI / hotplug / PCI: Drop handle field from struct acpiphp_func
  ACPI / hotplug / PCI: Embed function struct into struct acpiphp_context
  ...
This commit is contained in:
Rafael J. Wysocki 2013-08-27 01:26:37 +02:00
commit abe5430e9d
9 changed files with 477 additions and 681 deletions
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14
drivers/acpi/pci_slot.c
View file

@ -159,12 +159,16 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
return AE_OK;
}
void acpi_pci_slot_enumerate(struct pci_bus *bus, acpi_handle handle)
void acpi_pci_slot_enumerate(struct pci_bus *bus)
{
mutex_lock(&slot_list_lock);
acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
register_slot, NULL, bus, NULL);
mutex_unlock(&slot_list_lock);
acpi_handle handle = ACPI_HANDLE(bus->bridge);
if (handle) {
mutex_lock(&slot_list_lock);
acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
register_slot, NULL, bus, NULL);
mutex_unlock(&slot_list_lock);
}
}
void acpi_pci_slot_remove(struct pci_bus *bus)

39
drivers/acpi/sleep.c
View file

@ -420,10 +420,21 @@ static void acpi_pm_finish(void)
}
/**
* acpi_pm_end - Finish up suspend sequence.
* acpi_pm_start - Start system PM transition.
*/
static void acpi_pm_start(u32 acpi_state)
{
acpi_target_sleep_state = acpi_state;
acpi_sleep_tts_switch(acpi_target_sleep_state);
acpi_scan_lock_acquire();
}
/**
* acpi_pm_end - Finish up system PM transition.
*/
static void acpi_pm_end(void)
{
acpi_scan_lock_release();
/*
* This is necessary in case acpi_pm_finish() is not called during a
* failing transition to a sleep state.
@ -451,21 +462,19 @@ static u32 acpi_suspend_states[] = {
static int acpi_suspend_begin(suspend_state_t pm_state)
{
u32 acpi_state = acpi_suspend_states[pm_state];
int error = 0;
int error;
error = (nvs_nosave || nvs_nosave_s3) ? 0 : suspend_nvs_alloc();
if (error)
return error;
if (sleep_states[acpi_state]) {
acpi_target_sleep_state = acpi_state;
acpi_sleep_tts_switch(acpi_target_sleep_state);
} else {
printk(KERN_ERR "ACPI does not support this state: %d\n",
pm_state);
error = -ENOSYS;
if (!sleep_states[acpi_state]) {
pr_err("ACPI does not support sleep state S%u\n", acpi_state);
return -ENOSYS;
}
return error;
acpi_pm_start(acpi_state);
return 0;
}
/**
@ -631,10 +640,8 @@ static int acpi_hibernation_begin(void)
int error;
error = nvs_nosave ? 0 : suspend_nvs_alloc();
if (!error) {
acpi_target_sleep_state = ACPI_STATE_S4;
acpi_sleep_tts_switch(acpi_target_sleep_state);
}
if (!error)
acpi_pm_start(ACPI_STATE_S4);
return error;
}
@ -713,8 +720,10 @@ static int acpi_hibernation_begin_old(void)
if (!error) {
if (!nvs_nosave)
error = suspend_nvs_alloc();
if (!error)
if (!error) {
acpi_target_sleep_state = ACPI_STATE_S4;
acpi_scan_lock_acquire();
}
}
return error;
}