src/patches/suse-2.6.27.31/patches.suse/hp_backlight_blacklist_6530b.patch

   1 From: Thomas Renninger <trenn@suse.de>
   2 Subject: Blacklist HP laptop (6530b) to not use generic ACPI backlight interface
   3 References: bnc#491802
   4 Patch-Mainline: never, this will be IGD driven which is too risky to backport
   5
   6
   7 Signed-off-by: Thomas Renninger <trenn@suse.de>
   8
   9 ---
  10  drivers/acpi/video_detect.c |   20 ++++++++++++++++++++
  11  1 file changed, 20 insertions(+)
  12
  13 Index: linux-2.6.27-SLE11_BRANCH/drivers/acpi/video_detect.c
  14 ===================================================================
  15 --- linux-2.6.27-SLE11_BRANCH.orig/drivers/acpi/video_detect.c
  16 +++ linux-2.6.27-SLE11_BRANCH/drivers/acpi/video_detect.c
  17 @@ -142,6 +142,25 @@ find_video(acpi_handle handle, u32 lvl,
  18         return AE_OK;
  19  }
  20
  21 +static int set_dmi_blacklisting(const struct dmi_system_id *id)
  22 +{
  23 +       printk(KERN_NOTICE "%s detected - adjusting backlight video\n",
  24 +              id->ident);
  25 +       acpi_video_support |= (long)id->driver_data;
  26 +       return 0;
  27 +}
  28 +
  29 +static struct dmi_system_id video_backlight_blacklist[] = {
  30 +       { set_dmi_blacklisting,
  31 +         "HP 6530b", {
  32 +               DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
  33 +               DMI_MATCH(DMI_PRODUCT_NAME, "6530b")
  34 +               },
  35 +         (void *) ACPI_VIDEO_BACKLIGHT_DMI_VENDOR
  36 +       },
  37 +         {},
  38 +};
  39 +
  40  /*
  41   * Returns the video capabilities of a specific ACPI graphics device
  42   *
  43 @@ -176,6 +195,7 @@ long acpi_video_get_capabilities(acpi_ha
  44                  *              ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
  45                  *}
  46                  */
  47 +               dmi_check_system(video_backlight_blacklist);
  48         } else {
  49                 status = acpi_bus_get_device(graphics_handle, &tmp_dev);
  50                 if (ACPI_FAILURE(status)) {