[Intel-gfx] [PATCH v2 3/6] drm/i915/guc: reserve the doorbell before selecting the cacheline

[Daniele Ceraolo Spurio]

Cacheline selection is only needed if we actually manage to reserve a
doorbell.

Cc: Michal Wajdeczko <michal.wajdeczko at intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
---
 drivers/gpu/drm/i915/intel_guc_submission.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c
index b089e5283307..8c3b5a9facee 100644
--- a/drivers/gpu/drm/i915/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/intel_guc_submission.c
@@ -955,6 +955,10 @@ guc_client_alloc(struct drm_i915_private *dev_priv,
 	}
 	client->vaddr = vaddr;
 
+	ret = reserve_doorbell(client);
+	if (ret)
+		goto err_vaddr;
+
 	client->doorbell_offset = __select_cacheline(guc);
 
 	/*
@@ -967,10 +971,6 @@ guc_client_alloc(struct drm_i915_private *dev_priv,
 	else
 		client->proc_desc_offset = (GUC_DB_SIZE / 2);
 
-	ret = reserve_doorbell(client);
-	if (ret)
-		goto err_vaddr;
-
 	DRM_DEBUG_DRIVER("new priority %u client %p for engine(s) 0x%x: stage_id %u\n",
 			 priority, client, client->engines, client->stage_id);
 	DRM_DEBUG_DRIVER("doorbell id %u, cacheline offset 0x%lx\n",
-- 
2.19.0