[Bug 84083] [BDW Bisected]DP unable to light up after unplug/plug while X running

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84083

Guo Jinxian <jinxianx.guo at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[BDW Regression]DP unable   |[BDW Bisected]DP unable to
                   |to light up after           |light up after unplug/plug
                   |unplug/plug while X running |while X running

--- Comment #6 from Guo Jinxian <jinxianx.guo at intel.com> ---
0e32b39ceed665bfa4a77a4bc307b6652b991632 is the first bad commit
Author:     Dave Airlie <airlied at redhat.com>
AuthorDate: Fri May 2 14:02:48 2014 +1000
Commit:     Dave Airlie <airlied at redhat.com>
CommitDate: Tue Jul 22 11:20:26 2014 +1000


    drm/i915: add DP 1.2 MST support (v0.7)

    This adds DP 1.2 MST support on Haswell systems.

    Notes:
    a) this reworks irq handling for DP MST ports, so that we can
    avoid the mode config locking in the current hpd handlers, as
    we need to process up/down msgs at a better time.

    Changes since v0.1:
    use PORT_PCH_HOTPLUG to detect short vs long pulses
    add a workqueue to deal with digital events as they can get blocked on the
    main workqueue beyong mode_config mutex
    fix a bunch of modeset checker warnings
    acks irqs in the driver
    cleanup the MST encoders

    Changes since v0.2:
    check irq status again in work handler
    move around bring up and tear down to fix DPMS on/off
    use path properties.

    Changes since v0.3:
    updates for mst apis
    more state checker fixes
    irq handling improvements
    fbcon handling support
    improved reference counting of link - fixes redocking.

    Changes since v0.4:
    handle gpu reset hpd reinit without oopsing
    check link status on HPD irqs
    fix suspend/resume

    Changes since v0.5:
    use proper functions to get max link/lane counts
    fix another checker backtrace - due to connectors disappearing.
    set output type in more places fro, unknown->displayport
    don't talk to devices if no HPD asserted
    check mst on short irqs only
    check link status properly
    rebase onto prepping irq changes.
    drop unsued force_act

    Changes since v0.6:
    cleanup unused struct entry.

    [airlied: fix some sparse warnings].

    Reviewed-by: Todd Previte <tprevite at gmail.com>
    Signed-off-by: Dave Airlie <airlied at redhat.com>

:040000 040000 93e1ede3cbc00222af2880adafbd633f5b9fd4e5
19d739b7d711dfeebb5335d34dd43f15f1295be2 M      drivers

The commit unable to revert

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20140928/275faf5a/attachment.html>