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2e19af9438
To avoid possible hang, we need to add depth stall if we flush the depth cache. Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20191015154449.10338-8-mika.kuoppala@linux.intel.com