)]}'
{
  "commit": "fbc9fe1b4f222a7c575e3bd8e9defe59c6190a04",
  "tree": "c76ebdac257ec5c565bad1d7f9fc865114093aad",
  "parents": [
    "67b662e189f469c6d373f81d76b0ef0495940e99"
  ],
  "author": {
    "name": "Aaron Lu",
    "email": "aaron.lu@intel.com",
    "time": "Fri Oct 11 21:27:45 2013 +0800"
  },
  "committer": {
    "name": "Rafael J. Wysocki",
    "email": "rafael.j.wysocki@intel.com",
    "time": "Wed Oct 16 01:16:04 2013 +0200"
  },
  "message": "ACPI / video: Do not register backlight if win8 and native interface exists\n\nAccording to Matthew Garrett, \"Windows 8 leaves backlight control up\nto individual graphics drivers rather than making ACPI calls itself.\nThere\u0027s plenty of evidence to suggest that the Intel driver for\nWindows [8] doesn\u0027t use the ACPI interface, including the fact that\nit\u0027s broken on a bunch of machines when the OS claims to support\nWindows 8.  The simplest thing to do appears to be to disable the\nACPI backlight interface on these systems\".\n\nSo for Win8 systems, if there is native backlight control interface\nregistered by GPU driver, ACPI video does not need to register its own.\nSince there are systems that don\u0027t work well with this approach, a\nparameter for video module named use_native_backlight is introduced and\nhas the value of false by default. For users who have a broken ACPI\nvideo backlight interface, video.use_native_backlight\u003d1 is needed in\nkernel cmdline.\n\nSigned-off-by: Aaron Lu \u003caaron.lu@intel.com\u003e\nSigned-off-by: Rafael J. Wysocki \u003crafael.j.wysocki@intel.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "20f423337e1fb73c66379a3771954741860c6d7d",
      "old_mode": 33188,
      "old_path": "drivers/acpi/internal.h",
      "new_id": "e9304dc7ebfa0dc40c37dcc3be270cc299b94170",
      "new_mode": 33188,
      "new_path": "drivers/acpi/internal.h"
    },
    {
      "type": "modify",
      "old_id": "3bd1eaa4ef901a79ec53c34605d768124725e679",
      "old_mode": 33188,
      "old_path": "drivers/acpi/video.c",
      "new_id": "d020df5a732ab1109d9fd3ddcaa9c7ff871b192b",
      "new_mode": 33188,
      "new_path": "drivers/acpi/video.c"
    },
    {
      "type": "modify",
      "old_id": "940edbf2fe8f4460b27fceb1e7fe5fdb7cbacfc3",
      "old_mode": 33188,
      "old_path": "drivers/acpi/video_detect.c",
      "new_id": "b6399343de51047e136fc11eb4455f9921135fef",
      "new_mode": 33188,
      "new_path": "drivers/acpi/video_detect.c"
    }
  ]
}