[Bug 100610] WARNING: CPU: 1 PID: 16615 at drivers/gpu/drm/drm_debugfs_crc.c:185 crtc_crc_open+0x1d0/0x1f0 [drm]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100610

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
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);

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