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drm/vmwgfx: Set dmabuf_size when vmw_dmabuf_init is successful 

SOU primary plane prepare_fb hook depends upon dmabuf_size to pin up BO
(and not call a new vmw_dmabuf_init) when a new fb size is same as
current fb. This was changed in a recent commit which is causing
page_flip to fail on VM with low display memory and multi-mon failure
when cycle monitors from secondary display.

Cc: <stable@vger.kernel.org> # 4.14, 4.16
Fixes: 20fb5a635a ("drm/vmwgfx: Unpin the screen object backup buffer when not used")
Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
This commit is contained in:
Deepak Rawat 2018-05-15 15:39:09 +02:00 committed by Thomas Hellstrom
parent 13f149d473
commit 91ba9f28a3
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
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@ -482,6 +482,8 @@ vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
return ret;
}
vps->dmabuf_size = size;
/*
* TTM already thinks the buffer is pinned, but make sure the
* pin_count is upped.