[Bug 97409] Tonga lock up on boot with amd-staging-4.6/7 since drm/amd/dal: track display state based on sink and stream for freesync

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97409

            Bug ID: 97409
           Summary: Tonga lock up on boot with amd-staging-4.6/7 since
                    drm/amd/dal: track display state based on sink and
                    stream for freesync
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: adf.lists at gmail.com

R9285 since below testing amd-staging-4.6/7 I lock on boot as soon as drm
loads.

No logging, no sysrq, no display, flashing keyboard.

commit bbc6372f92db837ef30f41eced850c08d91a3ebb
Author: Joshua Aberback <Joshua.Aberback at amd.com>
Date:   Tue Jul 26 11:58:06 2016 -0400

    drm/amd/dal: track display state based on sink and stream for freesync

    This is to avoid problems with arrays out of bounds when OS calls
    a flip on a display that's been removed but on which reset_mode
    has not been called yet.

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