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: (140 commits)
  ACPI: processor: use .notify method instead of installing handler directly
  ACPI: button: use .notify method instead of installing handler directly
  ACPI: support acpi_device_ops .notify methods
  toshiba-acpi: remove MAINTAINERS entry
  ACPI: battery: asynchronous init
  acer-wmi: Update copyright notice & documentation
  acer-wmi: Cleanup the failure cleanup handling
  acer-wmi: Blacklist Acer Aspire One
  video: build fix
  thinkpad-acpi: rework brightness support
  thinkpad-acpi: enhanced debugging messages for the fan subdriver
  thinkpad-acpi: enhanced debugging messages for the hotkey subdriver
  thinkpad-acpi: enhanced debugging messages for rfkill subdrivers
  thinkpad-acpi: restrict access to some firmware LEDs
  thinkpad-acpi: remove HKEY disable functionality
  thinkpad-acpi: add new debug helpers and warn of deprecated atts
  thinkpad-acpi: add missing log levels
  thinkpad-acpi: cleanup debug helpers
  thinkpad-acpi: documentation cleanup
  thinkpad-acpi: drop ibm-acpi alias
  ...

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 50e3d2dbf3af..09737275e25f 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -55,6 +55,9 @@ acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found generic backlight "
                                   "support\n"));
                 *cap |= ACPI_VIDEO_BACKLIGHT;
+                if (ACPI_FAILURE(acpi_get_handle(handle, "_BQC", &h_dummy)))
+                        printk(KERN_WARNING FW_BUG PREFIX "ACPI brightness "
+                                        "control misses _BQC function\n");
                 /* We have backlight support, no need to scan further */
                 return AE_CTRL_TERMINATE;
         }