drm/vmwgfx: Fix hibernation device reset

The device would not reset properly when resuming from hibernation. Signed-off-by: Thomas Hellstrom <[email protected]> Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Dmitry Torokhov <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Dave Airlie <[email protected]>
jadonk · Nov 9, 2012 · 95e8f6a · 95e8f6a
1 parent 4a48ed2
commit 95e8f6a
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -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.