[ 3.5.y.z extended stable ] Patch "drm/vmwgfx: Fix hibernation device reset" has been added to staging queue

[Herton Ronaldo Krzesinski]

This is a note to let you know that I have just added a patch titled

    drm/vmwgfx: Fix hibernation device reset

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

>From b75471b5a50e11ff2055c80c87496c9167681918 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thellstrom at vmware.com>
Date: Fri, 9 Nov 2012 10:05:57 +0100
Subject: [PATCH] drm/vmwgfx: Fix hibernation device reset
X-Extended-Stable: 3.5

commit 95e8f6a21996c4cc2c4574b231c6e858b749dce3 upstream.

The device would not reset properly when resuming from hibernation.

Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
Reviewed-by: Brian Paul <brianp at vmware.com>
Reviewed-by: Dmitry Torokhov <dtor at vmware.com>
Cc: linux-graphics-maintainer at vmware.com
Signed-off-by: Dave Airlie <airlied at redhat.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 3a4b15a..db50604 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -1102,6 +1102,11 @@ static void vmw_pm_complete(struct device *kdev)
 	struct drm_device *dev = pci_get_drvdata(pdev);
 	struct vmw_private *dev_priv = vmw_priv(dev);

+	mutex_lock(&dev_priv->hw_mutex);
+	vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
+	(void) vmw_read(dev_priv, SVGA_REG_ID);
+	mutex_unlock(&dev_priv->hw_mutex);
+
 	/**
 	 * Reclaim 3d reference held by fbdev and potentially
 	 * start fifo.
--
1.7.9.5