--- /dev/null
+From pebolle@tiscali.nl Thu Feb 6 14:41:08 2014
+From: Paul Bolle <pebolle@tiscali.nl>
+Date: Thu, 06 Feb 2014 22:53:29 +0100
+Subject: mei: mei_hbm_dispatch() returns void
+To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Tomas Winkler <tomas.winkler@intel.com>, Alexander Usyskin <alexander.usyskin@intel.com>
+Message-ID: <1391723609.1782.2.camel@x220>
+
+From: Paul Bolle <pebolle@tiscali.nl>
+
+Building hbm.o for v3.13.2 triggers a GCC warning:
+ drivers/misc/mei/hbm.c: In function 'mei_hbm_dispatch':
+ drivers/misc/mei/hbm.c:596:3: warning: 'return' with a value, in function returning void [enabled by default]
+ return 0;
+ ^
+
+GCC is correct, obviously. So let's return void instead of zero here.
+
+Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
+Acked-by: Tomas Winkler <tomas.winkler@intel.com>
+Cc: Alexander Usyskin <alexander.usyskin@intel.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+Compile tested only.
+
+ drivers/misc/mei/hbm.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/misc/mei/hbm.c
++++ b/drivers/misc/mei/hbm.c
+@@ -593,7 +593,7 @@ void mei_hbm_dispatch(struct mei_device
+ */
+ if (dev->hbm_state == MEI_HBM_IDLE) {
+ dev_dbg(&dev->pdev->dev, "hbm: state is idle ignore spurious messages\n");
+- return 0;
++ return;
+ }
+
+ switch (mei_msg->hbm_cmd) {