Merge remote branch 'keithp/drm-intel-next' of /ssd/git/drm-next into drm-core-next

* 'keithp/drm-intel-next' of /ssd/git/drm-next: (301 commits)
  drm/i915: split PCH clock gating init
  drm/i915: add Ivybridge clock gating init function
  drm/i915: Update the location of the ringbuffers' HWS_PGA registers for IVB.
  drm/i915: Add support for fence registers on Ivybridge.
  drm/i915: Use existing function instead of open-coding fence reg clear.
  drm/i915: split clock gating init into per-chipset functions
  drm/i915: set IBX pch type explicitly
  drm/i915: add Ivy Bridge PCI IDs and driver feature structs
  drm/i915: add PantherPoint PCH ID
  agp/intel: add Ivy Bridge support
  drm/i915: ring support for Ivy Bridge
  drm/i915: page flip support for Ivy Bridge
  drm/i915: interrupt & vblank support for Ivy Bridge
  drm/i915: treat Ivy Bridge watermarks like Sandy Bridge
  drm/i915: manual FDI training for Ivy Bridge
  drm/i915: add swizzle/tiling support for Ivy Bridge
  drm/i915: Ivy Bridge has split display and pipe control
  drm/i915: add IS_IVYBRIDGE macro for checks
  drm/i915: add IS_GEN7 macro to cover Ivy Bridge and later
  drm/i915: split enable/disable vblank code into chipset specific functions
  ...

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index b136c9c1e531..449c556274c0 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -943,6 +943,10 @@ static int acpi_bus_get_flags(struct acpi_device *device)
         if (ACPI_SUCCESS(status))
                 device->flags.lockable = 1;
 
+        /* Power resources cannot be power manageable. */
+        if (device->device_type == ACPI_BUS_TYPE_POWER)
+                return 0;
+
         /* Presence of _PS0|_PR0 indicates 'power manageable' */
         status = acpi_get_handle(device->handle, "_PS0", &temp);
         if (ACPI_FAILURE(status))