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[ash <ashley@xxxxxxxxxxxxxx>]

Can the latest changes from 4.6-rc2 be brought forward still to many
issues

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https://bugs.launchpad.net/bugs/1560395

Title:
  [i915_bpo] Update i915 backport driver

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  Current snapshot of i915_bpo is based on drm-intel-next-2016-02-14
  tag, and it makes sense to update it to the latest tag leading to 4.6,
  which is drm-intel-next-fixes-2016-03-16:

  94669e6ba1ada13 drm/i915: Handle -ED EADLK in drm_atomic_commit from load-detect.
  0bbca274a31c236 drm/i915: Actually retry with bit-banging after GMBUS timeout
  2f791908a70e957 drm/i915: Fix bogus dig_port_map[] assignment for pre-HSW
  eda908967feecf7 drm/i915: Balance assert_rpm_wakelock_held() for !IS_ENABLED(CONFIG_PM)
  bd90123c4973821 drm/i915/skl: Fix power domain suspend sequence
  5790ff742b1feee drm/i915: Update DRIVER_DATE to 20160229
  2743179d955bd73 drm/i915: Execlists cannot pin a context without the object
  596c5923197b889 drm/i915: Reduce the pointer dance of i915_is_ggtt()
  1c7f4bca5a6f53c drm/i915: Rename vma->*_list to *_link for consistency
  135dc79efbc119e drm/i915: Balance assert_rpm_wakelock_held() for !IS_ENABLED(CONFIG_PM)
  99cf8ea16595ecf drm/i915/lrc: Only set RS ctx enable in ctx control reg if there is a RS
  715629190ef384a drm/i915/gen9: Set value of Indirect Context Offset based on gen version
  032b612e055ecc5 drm/i915: Remove update_sprite_watermarks.
  e8861675c5ccaf3 drm/i915: Kill off intel_crtc->atomic.wait_vblank, v6.
  33c8df89351709e drm/i915: Unify power domain handling.
  74bff5f92740a9d drm/i915: Pass crtc state to modeset_get_crtc_power_domains.
  6831f3e3c640ad4 drm/i915: Add for_each_pipe_masked()
  aae8ba844495473 drm/i915: Make sure pipe interrupts are processed before turning off power well on BDW+
  2230fde85cfff29 drm/i915: synchronize_irq() before turning off disp2d power well on VLV/CHV
  1ca993d237a587b drm/i915: Skip PIPESTAT reads from irq handler on VLV/CHV when power well is down
  9b18572e83bfd53 drm/i915/gen9: Verify and enforce dc6 state writes
  9b6f20984c5402a drm/i915/gen9: Check for DC state mismatch
  53188eb40121a13 drm/i915/skl: Ensure HW is powered during DDB HW state readout
  380bdff2d05b498 drm/i915/lvds: Ensure the HW is powered during HW state readout
  31feb61a688bd4b drm/i915/hdmi: Ensure the HW is powered during HW state readout
  fe97fd7eb872558 drm/i915/dsi: Ensure the HW is powered during HW state readout
  b81b801f8675838 drm/i915/dp: Ensure the HW is powered during HW state readout
  02f9f5e62a9b0a1 drm/i915: Ensure the HW is powered when accessing the CRC HW block
  d59410219ae396a drm/i915/ddi: Ensure the HW is powered during HW state readout
  7a6252c6bce1124 drm/i915/crt: Ensure the HW is powered during HW state readout
  5a24fab098d6f1a drm/i915: Ensure the HW is powered during HW access in assert_pipe
  bacd67d6a36c890 drm/i915: Ensure the HW is powered when disabling VGA
  013ef6cfc411bfe drm/i915/ibx: Ensure the HW is powered during PLL HW readout
  9fb84d5a9299ac6 drm/i915: Ensure the HW is powered during display pipe HW readout
  5af9a454769bb55 drm/i915: Add helper to get a display power ref if it was already enabled
  1e657ad7a48f1ce drm/i915/gen9: Write dc state debugmask bits only once
  5b076889f6239f8 drm/i915/gen9: Extend dmc debug mask to include cores
  779cb5d3ddd7295 drm/i915/gen9: Verify and enforce dc6 state writes
  832dba889e27487 drm/i915/gen9: Check for DC state mismatch
  a98ee79317b4091 drm/i915/fbc: enable FBC by default on HSW and BDW
  0f3a93d1b0cf23c drm/i915: drop unused i915.disable_vtd_wa module parameter
  57b63d00df0ded2 drm/i915: drop write perm from module params which don't support changing
  0aa8bdf25b16f5c drm/i915/dsi: Using the bpp value wrt the pixel format
  d6e3af5498390ae drm/i915/bxt: Remove DSP CLK_GATE programming for BXT
  4d800030238878c drm/i915/skl: Ensure HW is powered during DDB HW state readout
  dd75619853e4a28 drm/i915: Extract intel_encoder_has_connectors()
  e28661bd1acbdcb drm/i915: Use atomic state in intel_fb_initial_config.
  7bb4afb45879541 drm/i915: Use correct dpms for intel_enable_crt.
  0eadc62462afcfd drm/i915: Use atomic state in tv load detection.
  c8ecb2f162a6065 drm/i915: Use atomic state for load detect in crt.
  edde361711ef8f3 drm/i915: Use atomic state to obtain load detection crtc, v3.
  9b58e352b463f2f drm/i915: Enable PSR by default on Haswell and Broadwell.
  a38c274faad0ec6 drm/i915: Enable PSR by default on Valleyview and Cherryview.
  d94d6e87138588b drm/i915: Change i915.enable_psr parameter to use per platform default.
  69603dbb315fc7a i915: cast before shifting in i915_pte_count
  ecb2448218acf23 drm/i915/lvds: Ensure the HW is powered during HW state readout
  5b0921748c0b1d0 drm/i915/hdmi: Ensure the HW is powered during HW state readout
  3f3f42b887fbffc drm/i915/dsi: Ensure the HW is powered during HW state readout
  6fa9a5ecf7a5445 drm/i915/dp: Ensure the HW is powered during HW state readout
  e129649b7a3e1d5 drm/i915: Ensure the HW is powered when accessing the CRC HW block
  e27daab49718e32 drm/i915/ddi: Ensure the HW is powered during HW state readout
  1c8fdda1ea947ae drm/i915/crt: Ensure the HW is powered during HW state readout
  4feed0ebfa45879 drm/i915: Ensure the HW is powered during HW access in assert_pipe
  6392f8478e6f119 drm/i915: Ensure the HW is powered when disabling VGA
  12fda3876d08519 drm/i915/ibx: Ensure the HW is powered during PLL HW readout
  1729050eb4bbc19 drm/i915: Ensure the HW is powered during display pipe HW readout
  09731280028ce03 drm/i915: Add helper to get a display power ref if it was already enabled
  755412e29c77453 drm/i915: Add an optional selection from i915 of CONFIG_MMU_NOTIFIER
  8d409cb3e8a2419 drm/i915: Fix hpd live status bits for g4x
  ea49c9acf2db708 drm/i915: Lock mode_config.mutex in intel_display_resume.
  e8788cbc32dd90a drm/i915: Fix some minor issues with atomic cdclk.
  e2c8b8701e2d0cb drm/i915: Use atomic helpers for suspend, v2.
  1db6e2e7dc27391 drm/i915: Check for get_pages instead of shmem (filp)
  b31e51360e88f8f drm/i915: Reject invalid-pad for context-destroy and -create ioctls
  22824fac947bf09 drm/i915: Add missing 'else' to intel_digital_port_connected()
  0780cd36c7af70c drm/i915: Fix hpd live status bits for g4x
  84f1b20f095919c drm/i915/ilk: Move register read under spinlock
  36894e8bc4d3eda drm/i915/guc: Do not wait for firmware load atomically
  ee504898777b7d1 drm/i915: Fix struct mutex vs. RPS lock inversion
  12c83d99436b6a4 drm/i915: GEM operations need to be done under the big lock
  3f441b825d92af7 drm/i915: Use appropriate spinlock flavour
  fb1a38a92ba8ed9 drm/i915: Clear shared dpll based on old state, v2.
  1ffedc067748239 Revert "drm/i915: fix context/engine cleanup order"
  e26e1b976dd4c53 drm/i915: Don't ERROR for an expected intel_rcs_ctx_init() interruption
  4d32c0d82380bb6 drm/i915: Set aux.dev to the drm_connector device, instead of drm_device.
  ed3f9fd1e865975  drm/i915: fix error path in intel_setup_gmbus()
  39748841a719c9b drm/i915/skl: Fix typo in DPLL_CFGCR1 definition
  3d849b02336be10 drm/i915/skl: Don't skip mst encoders in skl_ddi_pll_select()
  e2e407dc093f530 drm/i915: Pretend cursor is always on for ILK-style WM calculations (v2)
  0fd64e821377282 drm/i915/dp: reduce missing TPS3 support errors to debug logging
  bf039fa9357bdd2 drm/i915/dp: abstract training pattern selection
  bfadcded516b121 drm/i915/dsi: skip gpio element execution when not supported
  26f6f2d301c1fb4 drm/i915/dsi: don't pass arbitrary data to sideband
  4db3a2448ec8902 drm/i915/dsi: defend gpio table against out of bounds access
  949d0b51bebce8e drm/i915/bxt: Don't save/restore eDP panel power during suspend (v3)
  93232aeb304bc22 drm/i915: Allow i915_gem_object_get_page() on userptr as well

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