1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 8967dcb5f58f..3d5d6b908148 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -974,6 +974,10 @@ gen6_irq_enable(struct intel_engine_cs *engine)
         I915_WRITE_IMR(engine,
                        ~(engine->irq_enable_mask |
                          engine->irq_keep_mask));
+
+        /* Flush/delay to ensure the RING_IMR is active before the GT IMR */
+        POSTING_READ_FW(RING_IMR(engine->mmio_base));
+
         gen5_enable_gt_irq(dev_priv, engine->irq_enable_mask);
 }