From 05c9501859c8bd80635d7299c384e2a8db7c0ce1 Mon Sep 17 00:00:00 2001
From: Sinclair Yeh <syeh@vmware.com>
Date: Tue, 11 Aug 2015 22:53:39 -0700
Subject: [PATCH] drm/vmwgfx: Fix crash when unloading vmwgfx v2

This patch fixes two issues.  One, when a surface is a proxy for a DMA
buffer, it holds an extra reference that needs to be cleared.

Two, when fbdev is enabled, we need to unpin the framebuffer before
unloading the driver.  This is done by a call to vmw_fb_off().

v2
Moved unreferencing surface to from vmw_framebuffer_surface_destroy()
to vmw_kms_new_framebuffer()

Added "struct vmw_framebuffer *vfb = NULL;" to silence a compiler
warning.

Removed error checking after calling vmw_surface/dmabuf_reference()

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
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