From: Christian König <christian.koenig@amd.com>
Date: Fri, 14 Sep 2018 19:03:37 +0000 (+0200)
Subject: drm/amdgpu: don't allocate zero sized kernel BOs
X-Git-Tag: v5.15~7648^2~27^2~20
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=21a7e77f77b348e73c9c67064a545e724c4a0c9a;p=platform%2Fkernel%2Flinux-starfive.git

drm/amdgpu: don't allocate zero sized kernel BOs

Just free the BO if the size should be zero.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index e690925..84d82d5 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;