Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (32 commits)
  ACPI: thermal: show temperature in millidegree Celsius
  thermal: fix generic thermal I/F for hwmon
  acer-wmi: build depends on i8042
  documentation:  Move power-related files to Documentation/power/
  ACPI: buffer array too short in drivers/acpi/system.c
  acer-wmi: Add DMI quirk for mail LED support on Acer Aspire 3610/ 5610
  acer-wmi: Fix DSDT path in documentation
  acer-wmi: Make device detection error messages more descriptive
  laptops: move laptop-mode.txt to Documentation/laptops/
  ACPICA: Warn if packages with invalid references are evaluated
  ACPI: add _PRT quirks to work around broken firmware
  Hibernation: Fix mark_nosave_pages()
  ACPI: Ignore _BQC object when registering backlight device
  ACPI: WMI: Clean up handling of spec violating data blocks
  acer-wmi: Don't warn if mail LED cannot be detected
  acer-wmi: Rename mail LED correctly & remove hardcoded colour
  ACPI: use ACPI_DEBUG_PRINT instead of printk in acpi_processor_hotplug_notify()
  ACPI: button: make real parent for input devices in device tree
  toshiba_acpi: Enable autoloading
  ACPI: EC: Handle IRQ storm on Acer laptops
  ...

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index eba55b7d6c95..44ea60cf21c0 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle handle,
                         break;
                 }
 
+                if (!element->reference.handle) {
+                        printk(KERN_WARNING PREFIX "Invalid reference in"
+                               " package %s\n", pathname);
+                        status = AE_NULL_ENTRY;
+                        break;
+                }
                 /* Get the  acpi_handle. */
 
                 list->handles[i] = element->reference.handle;