drm/i915/guc: refactor guc_init_doorbell_hw()

We have essentially the same code in each of two different
loops, so we can refactor it into a little helper function.

This also reduces the amount of work done during startup,
as we now only reprogram h/w found to be in a state other
than that expected, and so avoid the overhead of setting
doorbell registers to the state they're already in.

Signed-off-by: Dave Gordon <[email protected]>
Reviewed-by: Tvrtko Ursulin <[email protected]>
Signed-off-by: Tvrtko Ursulin <[email protected]>

0 files changed, 0 insertions, 0 deletions