On !SMP systems spinlocks do not exist. Thus checking of they
are active will always fail.

Use
  assert_spin_locked(lock);
instead of
  BUG_ON(!spin_is_locked(lock));
to not BUG() on all UP systems.

Signed-off-by: Bruno Prémont <bonbons at linux-vserver.org>
---
 drivers/gpu/drm/omapdrm/omap_irq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_irq.c 
b/drivers/gpu/drm/omapdrm/omap_irq.c
index f035d2b..6ca9253 100644
--- a/drivers/gpu/drm/omapdrm/omap_irq.c
+++ b/drivers/gpu/drm/omapdrm/omap_irq.c
@@ -34,7 +34,7 @@ static void omap_irq_update(struct drm_device *dev)
        struct omap_drm_irq *irq;
        uint32_t irqmask = priv->vblank_mask;

-       BUG_ON(!spin_is_locked(&list_lock));
+       assert_spin_locked(&list_lock));

        list_for_each_entry(irq, &priv->irq_list, node)
                irqmask |= irq->irqmask;
-- 
1.8.1.5

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