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drm/i915: Do the fallback non-IRQ wait in ring throttle, too.

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As a workaround for IRQ synchronization issues in the gen7 BLT ring,
we want to turn the two wait functions into polling loops.

Signed-off-by: Eric Anholt <eric@anholt.net>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Eric Anholt 2011-12-22 14:54:59 -08:00 committed by Keith Packard
parent 116ac8d261
commit 7ea29b13e5
1 changed files with 4 additions and 0 deletions
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drivers/gpu/drm/i915/i915_gem.c
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@ -3309,6 +3309,10 @@ i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
if (ret == 0 && atomic_read(&dev_priv->mm.wedged))
ret = -EIO;
} else if (wait_for(i915_seqno_passed(ring->get_seqno(ring),
seqno) ||
atomic_read(&dev_priv->mm.wedged), 3000)) {
ret = -EBUSY;
}
}