[PATCH] drm/amdgpu: disable DRIVER_ATOMIC under SRIOV

[Tao, Yintian]

Ping...

Hi  Christian and Alex

Can you help have a review on it? Thanks in advance.

Best Regards
Yintian Tao

-----Original Message-----
From: Yintian Tao <yttao at amd.com> 
Sent: Tuesday, April 16, 2019 2:09 PM
To: amd-gfx at lists.freedesktop.org
Cc: Tao, Yintian <Yintian.Tao at amd.com>
Subject: [PATCH] drm/amdgpu: disable DRIVER_ATOMIC under SRIOV

Under SRIOV, we need disable DRIVER_ATOMIC.
Otherwise, it will trigger WARN_ON at drm_universal_plane_init.

Change-Id: I96a78d6e45b3a67ab9b9534e7071ae5daacc0f4f
Signed-off-by: Yintian Tao <yttao at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 7e7f9ed..7d484fa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -36,6 +36,7 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
 	/* enable virtual display */
 	adev->mode_info.num_crtc = 1;
 	adev->enable_virtual_display = true;
+	adev->ddev->driver->driver_features &= ~DRIVER_ATOMIC;
 	adev->cg_flags = 0;
 	adev->pg_flags = 0;
 }
-- 
2.7.4