src/patches/suse-2.6.27.31/patches.arch/0009-thinkpad_acpi-fingers-off-backlight.patch

   1 From: Thomas Renninger <trenn@suse.de>
   2 Subject: [PATCH] thinkpad_acpi: fingers off backlight if video.ko is serving this functionality
   3 Patch-Mainline: queued for .28 in Len's/ak's ACPI tree
   4
   5 commit bcca9a4a97b6e270793003d745d6f9439e1357a8
   6
   7 Signed-off-by: Thomas Renninger <trenn@suse.de>
   8 Signed-off-by: Andi Kleen <ak@linux.intel.com>
   9 ---
  10  drivers/misc/thinkpad_acpi.c |   29 +++++++++++++++++++----------
  11  1 file changed, 19 insertions(+), 10 deletions(-)
  12
  13 --- a/drivers/misc/thinkpad_acpi.c
  14 +++ b/drivers/misc/thinkpad_acpi.c
  15 @@ -4918,16 +4918,25 @@ static int __init brightness_init(struct
  16          */
  17         b = tpacpi_check_std_acpi_brightness_support();
  18         if (b > 0) {
  19 -               if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
  20 -                       printk(TPACPI_NOTICE
  21 -                              "Lenovo BIOS switched to ACPI backlight "
  22 -                              "control mode\n");
  23 -               }
  24 -               if (brightness_enable > 1) {
  25 -                       printk(TPACPI_NOTICE
  26 -                              "standard ACPI backlight interface "
  27 -                              "available, not loading native one...\n");
  28 -                       return 1;
  29 +
  30 +               if (acpi_video_backlight_support()) {
  31 +                       if (brightness_enable > 1) {
  32 +                               printk(TPACPI_NOTICE
  33 +                                      "Standard ACPI backlight interface "
  34 +                                      "available, not loading native one.\n");
  35 +                               return 1;
  36 +                       } else if (brightness_enable == 1) {
  37 +                               printk(TPACPI_NOTICE
  38 +                                      "Backlight control force, even standard "
  39 +                                      "ACPI backlight interface available\n");
  40 +                       }
  41 +               } else {
  42 +                       if (brightness_enable > 1) {
  43 +                               printk(TPACPI_NOTICE
  44 +                                      "Standard ACPI backlight interface not "
  45 +                                      "available, thinkpad_acpi driver "
  46 +                                      "will take over control\n");
  47 +                       }
  48                 }
  49         }
  50