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Revert "drm: Don't allow interruptions when opening debugfs/crc" 

This reverts

commit b8dfa821c2
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Apr 7 12:17:12 2017 +0100
    drm: Don't allow interruptions when opening debugfs/crc

It reportedly breaks things, so let's revert now and try again later.

Fixes: b8dfa821c2 ("drm: Don't allow interruptions when opening debugfs/crc")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
hifive-unleashed-5.1
Sean Paul 2017-04-07 16:15:30 -04:00
parent 2e0641631f
commit c98cdff94a
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/drm_debugfs_crc.c
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@ -177,9 +177,13 @@ static int crtc_crc_open(struct inode *inode, struct file *filep)
* guess when this particular piece of HW will be ready to start
* generating CRCs.
*/
wait_event_lock_irq(crc->wq, crtc_crc_data_count(crc), crc->lock);
ret = wait_event_interruptible_lock_irq(crc->wq,
crtc_crc_data_count(crc),
crc->lock);
spin_unlock_irq(&crc->lock);
WARN_ON(ret);
return 0;
err_disable: