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Merge branch 'acpi-pm'

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* acpi-pm:
  ACPI / bus: Move duplicate code to a separate new function
  mfd: Add support for Intel Sunrisepoint LPSS devices
  dmaengine: add a driver for Intel integrated DMA 64-bit
  mfd: make mfd_remove_devices() iterate in reverse order
  driver core: implement device_for_each_child_reverse()
  klist: implement klist_prev()
  Driver core: wakeup the parent device before trying probe
  ACPI / PM: Attach ACPI power domain only once
  PM / QoS: Make it possible to expose device latency tolerance to userspace
  ACPI / PM: Update the copyright notice and description of power.c
This commit is contained in:
Rafael J. Wysocki
2015-09-01 03:38:43 +02:00
parent 73990fc810 e91a398c31
commit ef5f5de069
25 changed files with 1981 additions and 24 deletions
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8
drivers/acpi/device_pm.c
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@@ -1119,6 +1119,14 @@ int acpi_dev_pm_attach(struct device *dev, bool power_on)
if (dev->pm_domain)
return -EEXIST;
/*
* Only attach the power domain to the first device if the
* companion is shared by multiple. This is to prevent doing power
* management twice.
*/
if (!acpi_device_is_first_physical_node(adev, dev))
return -EBUSY;
acpi_add_pm_notifier(adev, dev, acpi_pm_notify_work_func);
dev->pm_domain = &acpi_general_pm_domain;
if (power_on) {