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drm/i915/bdw: Add comment about gen8 HWS PGA

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This confused me some many times that I think it is appropriate to add a
small comment to instruct the reader of the code that it is indeed doing
what it is supposed to do.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2013-11-07 21:40:50 -08:00 committed by Daniel Vetter
parent 230f955f73
commit eb0d4b75d5
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/i915/intel_ringbuffer.c
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@ -965,6 +965,7 @@ void intel_ring_setup_status_page(struct intel_ring_buffer *ring)
} else if (IS_GEN6(ring->dev)) {
mmio = RING_HWS_PGA_GEN6(ring->mmio_base);
} else {
/* XXX: gen8 returns to sanity */
mmio = RING_HWS_PGA(ring->mmio_base);
}