git bisect start 'HEAD' '3151367' 'drivers/gpu/'
good: [6478d414fe4ee3114e760fb6d6df0f8e2f66186a] DRM/i915: Don't delete DPLL Multiplier during DAC init.
bad:  [5e5a195ecc8cc0280d169d6da33c959df6336e9f] drm/nouveau/clock: fix missing pll type/addr when matching default entry
bad:  [72a148277701acf56bcec486a1124499600812e1] drm/nouveau: restore fifo chid information in engine error messages
skip: [017e6e2955a8b290653aa71bd321609d0d4b1486] drm/nv04/disp: kick all private state out to own header
skip: [18c9b959fd8ea6f3602efbedad788f53e305e6f1] drm/nouveau/gpuobj: create wrapper functions for mapping gpuobj into vm/bar
bad:  [c4837d27945b9b607b5a7274a33059e73d1a7831] drm/nouveau/core: remove some left-over pieces from the porting process
skip: [9da226f698c01b268b9172050df4150f269a7613] drm/nvc0/fifo: handle bar1 control regs much like fifo/nve0
skip: [4196faa8623264b79279a06fd186654c959f2767] drm/nouveau/i2c: port to subdev interfaces
skip: [092599da308bf56b96c849ecdd315b8a1a13ca52] drm/nv50/instmem: remove use of nouveau_gpuobj_new_fake()
skip: [8aceb7de47ea2491abc1a577dc875b19e9947a54] drm/nouveau/clk: implement stub clock subdev
skip: [70ee6f1cd6911098ddd4c11ee21b69dbe51fb3f9] drm/nv04-nv40/fifo: remove use of nouveau_gpuobj_new_fake()
skip: [c4afbe74cebf887d3d8e7a11aa93bebcb6a3e2e1] drm/nvc0-/gr: share headers between fermi and kepler graphics code
skip: [73a60c0d218a292f8ef29d3467726ff26ed366fc] drm/nouveau/gpuobj: remove flags for vm-mappings
skip: [70790f4f819875e8f390871fd15bbbf823f28e1b] drm/nouveau/clock: pull in the implementation from all over the place
skip: [8a9b889e668a5bc2f4031015fe4893005c43403d] drm/nouveau: remove last use of nouveau_gpuobj_new_fake()
skip: [f589be88caf32501a734e531180d5df5d6089ef3] drm/nouveau/pageflip: kick flip handling out of engsw and into fence
skip: [3863c9bc887e9638a9d905d55f6038641ece78d6] drm/nouveau/instmem: completely new implementation, as a subdev module
skip: [bc9e7b9a61e9e92ddb58920cb2cb5c2e2825ca8a] drm/nouveau: move some more code around to more appropriate places
good: [d6ba6d215a538a58f0f0026f0961b0b9125e8042] drm/nvc0/fence: restore pre-suspend fence buffer context on resume
skip: [7d9115dee978e8540734c456c925d71a37752b8d] drm/nouveau/mc: port to subdev interfaces
good: [3a92d37e4099054fe187b485a9d27c439c10eca7] drm/nouveau/gem: use bo.offset rather than mm_node.start
skip: [5a5c7432bbbd2e318dff107b4ff960ab543a7cef] drm/nouveau/timer: port to subdev interfaces
bad:  [5999933f4de7de7bcaae4be87667b0cff57d6e45] drm/nouveau: add Kconfig options for debug control
skip: [2094dd82eddc468b53ee99d92c38b23a65efac03] drm/nouveau/device: include the official chipset names
skip: [496734bf0391f38c196e16dbbfaaeda8e6ec5845] drm/nouveau/core: add support for reverse mm allocations
skip: [51a3d3425663698a79e8a9d01998a8a32ddee13b] drm/nouveau/backlight: remove dependence on nouveau_drv.h
skip: [66f247234d1c47da480f687b8104d8935d05b404] drm/nouveau: pull nouveau_gem definitions into their own header
skip: [9458029940ffc64bca0c5a30ea626c377205842e] drm/nouveau: implement module init functions in nouveau_drm.c
skip: [0134a97979a0abc1c756b0fe491e074693c2bdf5] drm/nv50-/instmem: allocate vram for kernel objects from end of vram
skip: [fce875d647171f9f740587a252fc026aaa421afe] drm/nouveau: move compat ioctl out of nouveau_drv.h
skip: [8be21a6402baa502cd6475e137760afdb2b5dba8] drm/nouveau: pull nouveau_bo definitions into their own header
skip: [586c55f6ade73f8672d1eaf598237a6f49b28443] drm/nouveau: have non-core mmio accesses go through device object
skip: [861d21074bbb141b0cc165a61c11f571571cda12] drm/nouveau/fb: merge fb/vram and port to subdev interfaces
skip: [c0077061e7ea3a8c1c316c87a79976bf8f00beb5] drm/nouveau/acpi: move definitions out of nouveau_drv.h
skip: [af7afbd2e1409168698bde2f2846848b07d05d12] drm/nv04-nv40/instmem: duplicate nv04 code as nv40, remove alternate paths
skip: [70c0f263cc2eb12e02506eb75f0a71490e7dea4d] drm/nouveau/bios: pull in basic vbios subdev, more to come later
skip: [e193b1d42c390bf1bff7fa02a5a1202b98e75601] drm/nouveau/fence: un-port from nouveau_exec_engine interfaces
skip: [d38ac5217ab43cf61e8ebe6d7114fb2d1ca9a3a4] drm/nouveau/mxm: split up into bios code and a subdev module
skip: [5787640db6ae722aeadb394d480c7ca21b603e34] drm/nv04-nv40/instmem: remove use of nouveau_gpuobj_new_fake()
skip: [cd42439da48529a3cd6f957b226fc627a64fb771] drm/nouveau/oldbios: remove shadowing support, use bios subdev's image
skip: [a73c5c526a8a39b2e61709c753d44be597c9a4c0] drm/nvc0-nve0/graph: rename dev to priv, no code changes
skip: [84058eb80e0b790c877962e3f4cf49725e23ffce] drm/nouveau: flatten nv{Read,Write}{MC,VIDEO,FB,EXTDEV}
skip: [cb75d97e9c77743ecfcc43375be135a55a4d9b25] drm/nouveau: implement devinit subdev, and new init table parser
skip: [e0996aea4c349ba302b63203b7d5cab6034dbdca] drm/nouveau/gpio: port gpio to subdev interfaces
skip: [ac1499d9573f4aadd1d2beac11fe23af8ce90c24] drm/nvc0-/gr: generate grctx template at init time, not first context ctor
skip: [aa4cc5d274c09909fe32861825c2377d0ccb3bfd] drm/nouveau/agp: move all agp stuff into its own source file
skip: [ebb945a94bba2ce8dff7b0942ff2b3f2a52a0a69] drm/nouveau: port all engines to new engine module format
good: [9274f4a9ba7e70d1770e237fca16d52f27f0c728] drm/nouveau/core: pull in most of the new core infrastructure
skip: [08c770969a45361277d556f9fd3e2d70da42be65] drm/nouveau: start culling unused code
bad: [77145f1cbdf8d28b46ff8070ca749bad821e0774] drm/nouveau: port remainder of drm code, and rip out compat layer