drm/vmwgfx: Fix hibernation device reset
authorThomas Hellstrom <thellstrom@vmware.com>
Fri, 9 Nov 2012 09:05:57 +0000 (10:05 +0100)
committerDave Airlie <airlied@redhat.com>
Fri, 9 Nov 2012 10:49:02 +0000 (20:49 +1000)
The device would not reset properly when resuming from hibernation.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Dmitry Torokhov <dtor@vmware.com>
Cc: stable@vger.kernel.org
Cc: linux-graphics-maintainer@vmware.com
Signed-off-by: Dave Airlie <airlied@redhat.com>
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

index ed3c1e7ddde94cde6db31c1e09b3174364eb9d22..2dd185e42f2129c8492021050e8ba149890cfbfd 100644 (file)
@@ -1098,6 +1098,11 @@ 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.