From: Christopher James Halse Rogers <christopher.halse.rog...@canonical.com>
After emitting all the waiting vblank events no-one should hold
a vblank reference. Emit a warning if this is not the case.
Signed-off-by: Christopher James Halse Rogers
<christopher.halse.rog...@canonical.com>
---
drivers/gpu/drm/drm_irq.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index a1f12cb..72407fa 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -960,6 +960,7 @@ void drm_vblank_off(struct drm_device *dev, int crtc)
e->event.sequence);
}
+ WARN_ON(atomic_read(&dev->vblank_refcount[crtc]) != 0);
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
}
EXPORT_SYMBOL(drm_vblank_off);
--
1.7.4.1
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