[PATCH 5/7] drm/amdgpu: don't allocate zero sized kernel BOs

From: "Christian König" <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [PATCH 5/7] drm/amdgpu: don't allocate zero sized kernel BOs
Date: Fri, 14 Sep 2018 21:12:44 +0200	[thread overview]
Message-ID: <20180914191246.1609-5-christian.koenig@amd.com> (raw)
In-Reply-To: <20180914191246.1609-1-christian.koenig-5C7GfCeVMHo@public.gmane.org>

Just free the BO if the size is should be zero.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index e1f32a196f6d..d282e923d1b4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -250,6 +250,11 @@ int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
 	bool free = false;
 	int r;
 
+	if (!size) {
+		amdgpu_bo_unref(bo_ptr);
+		return 0;
+	}
+
 	memset(&bp, 0, sizeof(bp));
 	bp.size = size;
 	bp.byte_align = align;
-- 
2.14.1

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