[Intel-gfx] [PATCH] drm/i915: Use masked write for Context Status Buffer Pointer

Mika Kuoppala mika.kuoppala at linux.intel.com
Thu Aug 6 07:00:59 PDT 2015


This register needs to be updated with masked writes.

Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
---
 drivers/gpu/drm/i915/intel_lrc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 99bba8e..29347e7 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -521,7 +521,7 @@ void intel_lrc_irq_handler(struct intel_engine_cs *ring)
 	ring->next_context_status_buffer = write_pointer % 6;
 
 	I915_WRITE(RING_CONTEXT_STATUS_PTR(ring),
-		   ((u32)ring->next_context_status_buffer & 0x07) << 8);
+		   _MASKED_FIELD(0x07 << 8, ((u32)ring->next_context_status_buffer & 0x07) << 8));
 }
 
 static int execlists_context_queue(struct drm_i915_gem_request *request)
-- 
2.1.4



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