On Wed, 4 Jan 2012 19:40:45 +0100, Daniel Vetter <[email protected]> wrote:
> Two things seem to do the trick on my ivb machine here: > - prevent the gt from powering down while waiting for seqno > notification interrupts by grabbing the force_wake in get_irq (and > dropping it in put_irq again). > - ordering writes from the ring's CS by reading a CS register, ACTHD > seems to work. If this works reliably, you'll deserve a medal... -- [email protected]
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