From 91ba9f28a3de97761c2b5fd5df5d88421268e507 Mon Sep 17 00:00:00 2001
From: Deepak Rawat <drawat@vmware.com>
Date: Tue, 15 May 2018 15:39:09 +0200
Subject: [PATCH] drm/vmwgfx: Set dmabuf_size when vmw_dmabuf_init is successful
Git-commit: 91ba9f28a3de97761c2b5fd5df5d88421268e507
Patch-mainline: v4.17-rc6
References: bsc#1051510
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: 20fb5a635a0c ("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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
@@ -482,6 +482,8 @@ vmw_sou_primary_plane_prepare_fb(struct
return ret;
}
+ vps->dmabuf_size = size;
+
/*
* TTM already thinks the buffer is pinned, but make sure the
* pin_count is upped.