[PATCH v3 02/13] drm/msm: Small submitqueue creation cleanup

From: Rob Clark <robdclark@gmail.com>
To: dri-devel@lists.freedesktop.org
Cc: "Rob Clark" <robdclark@chromium.org>,
	"Christian König" <christian.koenig@amd.com>,
	"Rob Clark" <robdclark@gmail.com>, "Sean Paul" <sean@poorly.run>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM
	ADRENO GPU),
	freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM
	ADRENO GPU), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v3 02/13] drm/msm: Small submitqueue creation cleanup
Date: Tue, 27 Jul 2021 10:11:18 -0700	[thread overview]
Message-ID: <20210727171143.2549475-3-robdclark@gmail.com> (raw)
In-Reply-To: <20210727171143.2549475-1-robdclark@gmail.com>

From: Rob Clark <robdclark@chromium.org>

If we don't have a gpu, there is no need to create a submitqueue, which
lets us simplify the error handling and submitqueue creation.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/msm/msm_submitqueue.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c
index e5eef11ed014..9e9fec61d629 100644
--- a/drivers/gpu/drm/msm/msm_submitqueue.c
+++ b/drivers/gpu/drm/msm/msm_submitqueue.c
@@ -66,6 +66,12 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 	if (!ctx)
 		return -ENODEV;
 
+	if (!priv->gpu)
+		return -ENODEV;
+
+	if (prio >= priv->gpu->nr_rings)
+		return -EINVAL;
+
 	queue = kzalloc(sizeof(*queue), GFP_KERNEL);
 
 	if (!queue)
@@ -73,15 +79,7 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx,
 
 	kref_init(&queue->ref);
 	queue->flags = flags;
-
-	if (priv->gpu) {
-		if (prio >= priv->gpu->nr_rings) {
-			kfree(queue);
-			return -EINVAL;
-		}
-
-		queue->prio = prio;
-	}
+	queue->prio = prio;
 
 	write_lock(&ctx->queuelock);
 
@@ -107,12 +105,14 @@ int msm_submitqueue_init(struct drm_device *drm, struct msm_file_private *ctx)
 	struct msm_drm_private *priv = drm->dev_private;
 	int default_prio;
 
+	if (!priv->gpu)
+		return -ENODEV;
+
 	/*
 	 * Select priority 2 as the "default priority" unless nr_rings is less
 	 * than 2 and then pick the lowest priority
 	 */
-	default_prio = priv->gpu ?
-		clamp_t(uint32_t, 2, 0, priv->gpu->nr_rings - 1) : 0;
+	default_prio = clamp_t(uint32_t, 2, 0, priv->gpu->nr_rings - 1);
 
 	INIT_LIST_HEAD(&ctx->submitqueues);
 
-- 
2.31.1

