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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - WARNING: CPU: 1 PID: 16615 at drivers/gpu/drm/drm_debugfs_crc.c:185 crtc_crc_open+0x1d0/0x1f0 [drm]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100610#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - WARNING: CPU: 1 PID: 16615 at drivers/gpu/drm/drm_debugfs_crc.c:185 crtc_crc_open+0x1d0/0x1f0 [drm]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100610">bug 100610</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>Just beautiful it asks to be interrupted and then complains when it is:
crtc_crc_open():
/*
* Only return once we got a first frame, so userspace doesn't have to
* guess when this particular piece of HW will be ready to start
* generating CRCs.
*/
ret = wait_event_interruptible_lock_irq(crc->wq,
crtc_crc_data_count(crc),
crc->lock);
spin_unlock_irq(&crc->lock);
WARN_ON(ret);</pre>
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