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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT][BDW] igt@kms_frontbuffer_tracking@basic - *ERROR* vblank not available for FBC on pipe X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102410">bug 102410</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT][BDW] igt@kms_frontbuffer_tracking@basic - *ERROR* vblank not available for FBC on pipe X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102410#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT][BDW] igt@kms_frontbuffer_tracking@basic - *ERROR* vblank not available for FBC on pipe X"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102410">bug 102410</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>commit 908b6e6e8ab4c1e0c3783be4c4b437ac6fa374ea
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Fri Aug 25 16:02:15 2017 +0100
drm/i915: Quietly cancel FBC activation if CRTC is turned off before worker
Since we use a worker to enable FBC on the CRTC, it is possible for the
CRTC to be switched off before we run. In this case, the CRTC will not
allow us to wait upon a vblank, so remove the DRM_ERROR as this is very
much expected.
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT][BDW] igt@kms_frontbuffer_tracking@basic - *ERROR* vblank not available for FBC on pipe X"
href="show_bug.cgi?id=102410">https://bugs.freedesktop.org/show_bug.cgi?id=102410</a>
Fixes: ca18d51d77eb ("drm/i915/fbc: wait for a vblank instead of 50ms when
enabling")
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Cc: Paulo Zanoni <<a href="mailto:paulo.r.zanoni@intel.com">paulo.r.zanoni@intel.com</a>>
Cc: Rodrigo Vivi <<a href="mailto:rodrigo.vivi@intel.com">rodrigo.vivi@intel.com</a>>
Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20170825150215.19236-1-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20170825150215.19236-1-chris@chris-wilson.co.uk</a>
Reviewed-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>></pre>
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