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drm/vmwgfx: fix update of display surface when resolution changes 

The assignment of metadata overwrote the new display resolution values,
hence we'd miss the size actually changed and wouldn't redefine the
surface. This would then lead to command buffer error when trying to
update the screen target (due to the size mismatch), and result in a
VM with black screen.

Fixes: 504901dbb0 ("drm/vmwgfx: Refactor surface_define to use vmw_surface_metadata")
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Roland Scheidegger 2020-07-09 18:54:14 +02:00
parent 38794a5465
commit 1f054fd26e
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
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@ -1069,10 +1069,6 @@ vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
if (new_content_type != SAME_AS_DISPLAY) {
struct vmw_surface_metadata metadata = {0};
metadata.base_size.width = hdisplay;
metadata.base_size.height = vdisplay;
metadata.base_size.depth = 1;
/*
* If content buffer is a buffer object, then we have to
* construct surface info
@ -1104,6 +1100,10 @@ vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
metadata = new_vfbs->surface->metadata;
}
metadata.base_size.width = hdisplay;
metadata.base_size.height = vdisplay;
metadata.base_size.depth = 1;
if (vps->surf) {
struct drm_vmw_size cur_base_size =
vps->surf->metadata.base_size;