[PATCH 4/5] Revert "drm/i915: Propagate errors on awaiting already signaled fences"

[Bloomfield, Jon]

> -----Original Message-----
> From: Jason Ekstrand <jason at jlekstrand.net>
> Sent: Thursday, May 27, 2021 3:13 PM
> To: intel-gfx-trybot at lists.freedesktop.org
> Cc: Jason Ekstrand <jason at jlekstrand.net>; Ekstrand, Jason
> <jason.ekstrand at intel.com>; Slusarz, Marcin <marcin.slusarz at intel.com>;
> stable at vger.kernel.org; Bloomfield, Jon <jon.bloomfield at intel.com>; Daniel
> Vetter <daniel.vetter at ffwll.ch>
> Subject: [PATCH 4/5] Revert "drm/i915: Propagate errors on awaiting already
> signaled fences"
> 
> This reverts commit 9e31c1fe45d555a948ff66f1f0e3fe1f83ca63f7.  Ever
> since that commit, we've been having issues where a hang in one client
> can propagate to another.  In particular, a hang in an app can propagate
> to the X server which causes the whole desktop to lock up.
> 
> Signed-off-by: Jason Ekstrand <jason.ekstrand at intel.com>
> Reported-by: Marcin Slusarz <marcin.slusarz at intel.com>
> Cc: <stable at vger.kernel.org> # v5.6+
> Cc: Jason Ekstrand <jason.ekstrand at intel.com>
> Cc: Marcin Slusarz <marcin.slusarz at intel.com>
> Cc: Jon Bloomfield <jon.bloomfield at intel.com>
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3080
> Fixes: 9e31c1fe45d5 ("drm/i915: Propagate errors on awaiting already
> signaled fences")
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
Reviewed-by: Jon Bloomfield <jon.bloomfield at intel.com>