[PATCH 3/6] drm/amdgpu: don't clean the framebuffer for VF

Xiangliang Yu Xiangliang.Yu at amd.com
Thu May 4 06:34:25 UTC 2017

From: Pixel Ding <Pixel.Ding at amd.com>

The SRIOV host driver cleans framebuffer for each VF, guest driver
needn't this action which costs much time on some virtualization
platform, otherwise it might get timeout to initialize.

Signed-off-by: Pixel Ding <Pixel.Ding at amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu at amd.com>
 drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
index e869e60..6f5d994 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
@@ -242,6 +242,9 @@ static int amdgpufb_create(struct drm_fb_helper *helper,
 	/* setup helper */
 	rfbdev->helper.fb = fb;
+	if (!amdgpu_sriov_vf(adev))
+		memset_io(abo->kptr, 0x0, amdgpu_bo_size(abo));
 	strcpy(info->fix.id, "amdgpudrmfb");
 	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);

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