[Bug 93844] RetroArch refuses to go back into windowed mode after fullscreen with Intel i915 graphics

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93844

--- Comment #161 from Diego Viola <diego.viola at gmail.com> ---
[diego at myhost ~]$ cd linux
[diego at myhost linux]$ git bisect bad
7ac7d19f808697abe6658c64c96868f728273f9c is the first bad commit
commit 7ac7d19f808697abe6658c64c96868f728273f9c
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sun Apr 17 20:42:46 2016 +0100

    drm/i915: Avoid stalling on pending flips for legacy cursor updates

    The legacy cursor ioctl expects to be asynchronous with respect to other
    screen updates, in particular page flips. As X updates the cursor from a
    signal context, if the cursor blocks then it will stall both the input
    and output chains causing bad stuttering and horrible UX.

    Reported-and-tested-by: Rafael Ristovski <rafael.ristovski at gmail.com>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94980
    Fixes: 5008e874edd34 ("drm/i915: Make wait_for_flips interruptible.")
    Suggested-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
    Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
    Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
    Cc: Jani Nikula <jani.nikula at intel.com>
    Cc: stable at vger.kernel.org
    Link:
http://patchwork.freedesktop.org/patch/msgid/1460922166-20292-1-git-send-email-chris@chris-wilson.co.uk
    Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
    Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
    (cherry picked from commit acf4e84d6167317ff21be5c03e1ea76ea5783701)
    Signed-off-by: Jani Nikula <jani.nikula at intel.com>

:040000 040000 ffd5371b8faffb065a2cd8c5624127ce2a03284c
a19fe78a340ba89e0c206e96b65d5c426eb0e150 M      drivers
[diego at myhost linux]$

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