No subject

shouldn't be firing at all under normal circumstances. (Looking at it we
don't handle the introduction of the BSD ring correctly, but that is
irrelevant on the EeePC 900.)

Do the stalls and tearing go away with:

diff --git a/drivers/gpu/drm/i915/i915_irq.c
b/drivers/gpu/drm/i915/i915_irq.c
index e4d42a7..dc5fb4f 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1305,8 +1305,7 @@ void i915_hangcheck_elapsed(unsigned long data)
                dev_priv->hangcheck_count = 0;
 
                /* Issue a wake-up to catch stuck h/w. */
-               if (dev_priv->render_ring.waiting_gem_seqno |
-                   dev_priv->bsd_ring.waiting_gem_seqno) {
+               if (0) {
                        DRM_ERROR("Hangcheck timer elapsed... GPU idle, missed IRQ.\n");
                        if (dev_priv->render_ring.waiting_gem_seqno)
                                DRM_WAKEUP(&dev_priv->render_ring.irq_queue);

-- 
Chris Wilson, Intel Open Source Technology Centre