commit 7beff62ee39d3ccf088bb77f61a63037f714d235
author Alan Cox <alan@linux.intel.com> Mon May 21 15:27:44 2012 +0100
committer Dave Airlie <airlied@redhat.com> Tue May 22 10:15:45 2012 +0100
tree b6a2aa20f68594c6e7bcb800bc9b826d48a1cee7
parent bc794829141f28e14fe7d0e07e35870bd9aee78c

gma500: Fix Poulsbo suspend/resume crash on devices with SDVO ports

Reported-by: Guillaume Clément <guillaume@baobob.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/gma500/psb_device.c

diff --git a/drivers/gpu/drm/gma500/psb_device.c b/drivers/gpu/drm/gma500/psb_device.c
index 2a3e2da..eff039b 100644
--- a/drivers/gpu/drm/gma500/psb_device.c
+++ b/drivers/gpu/drm/gma500/psb_device.c
@@ -197,7 +197,8 @@
 	}
 
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
-		connector->funcs->save(connector);
+		if (connector->funcs->save)
+			connector->funcs->save(connector);
 
 	mutex_unlock(&dev->mode_config.mutex);
 	return 0;
@@ -235,7 +236,8 @@
 			crtc->funcs->restore(crtc);
 
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
-		connector->funcs->restore(connector);
+		if (connector->funcs->restore)
+			connector->funcs->restore(connector);
 
 	mutex_unlock(&dev->mode_config.mutex);
 	return 0;