[PATCH v2] drm/amdgpu: set fb_modifiers_not_supported in vkms

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This patch to fix the gdm3 start failure with virual display:

/usr/libexec/gdm-x-session[1711]: (II) AMDGPU(0): Setting screen physical size to 270 x 203
/usr/libexec/gdm-x-session[1711]: (EE) AMDGPU(0): Failed to make import prime FD as pixmap: 22
/usr/libexec/gdm-x-session[1711]: (EE) AMDGPU(0): failed to set mode: Invalid argument
/usr/libexec/gdm-x-session[1711]: (WW) AMDGPU(0): Failed to set mode on CRTC 0
/usr/libexec/gdm-x-session[1711]: (EE) AMDGPU(0): Failed to enable any CRTC
gnome-shell[1840]: Running GNOME Shell (using mutter 42.2) as a X11 window and compositing manager
/usr/libexec/gdm-x-session[1711]: (EE) AMDGPU(0): failed to set mode: Invalid argument

vkms doesn't have modifiers support, set fb_modifiers_not_supported to bring the gdm back.

Signed-off-by: Yifan Zhang <yifan1.zhang@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
index 576849e95296..f69827aefb57 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c
@@ -500,6 +500,8 @@ static int amdgpu_vkms_sw_init(void *handle)
 
 	adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
 
+	adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
+
 	r = amdgpu_display_modeset_create_props(adev);
 	if (r)
 		return r;
-- 
2.37.3




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