From: monk.liu <monk.liu@amd.com>
Date: Mon, 27 Apr 2015 07:23:54 +0000 (+0800)
Subject: amdgpu: do not call BO_LIST ioctl when no resource referred
X-Git-Tag: android-x86-6.0-r1~359
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=9c3bec246e5f1f7d2fcb2bd7e7cc0deab4d8b20d;p=android-x86%2Fexternal-libdrm.git

amdgpu: do not call BO_LIST ioctl when no resource referred

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

diff --git a/amdgpu/amdgpu_cs.c b/amdgpu/amdgpu_cs.c
index 72a2465c..91e6bcfc 100644
--- a/amdgpu/amdgpu_cs.c
+++ b/amdgpu/amdgpu_cs.c
@@ -635,6 +635,12 @@ static int amdgpu_cs_create_bo_list(amdgpu_device_handle dev,
 	int r;
 
 	num_resources = request->number_of_resources;
+
+	if (!num_resources) {
+		*handle = 0;
+		return 0;
+	}
+
 	if (fence_ib)
 		++num_resources;
 
@@ -671,6 +677,9 @@ static int amdgpu_cs_free_bo_list(amdgpu_device_handle dev, uint32_t handle)
 	union drm_amdgpu_bo_list args;
 	int r;
 
+	if (!handle)
+		return 0;
+
 	memset(&args, 0, sizeof(args));
 	args.in.operation = AMDGPU_BO_LIST_OP_DESTROY;
 	args.in.list_handle = handle;