diff --git a/[refs] b/[refs]
index 50b89e8ec54f..842376538b48 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b10ff54f9f58adfb708b53e6e56ed3d7804ade74
+refs/heads/master: c6fe6b0783a8fd923d11dd0388cbd561ff15bdf1
diff --git a/trunk/drivers/input/serio/hp_sdc_mlc.c b/trunk/drivers/input/serio/hp_sdc_mlc.c
index b587e2d576ac..820e51673b26 100644
--- a/trunk/drivers/input/serio/hp_sdc_mlc.c
+++ b/trunk/drivers/input/serio/hp_sdc_mlc.c
@@ -296,7 +296,7 @@ static void hp_sdc_mlc_out(hil_mlc *mlc)
 	priv->tseq[3] = 0;
 	if (mlc->opacket & HIL_CTRL_APE) {
 		priv->tseq[3] |= HP_SDC_LPC_APE_IPF;
-		down_trylock(&mlc->csem);
+		BUG_ON(down_trylock(&mlc->csem));
 	}
  enqueue:
 	hp_sdc_enqueue_transaction(&priv->trans);