diff --git a/[refs] b/[refs]
index a992049953bc..8420022d7578 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 74f4cf290918f05b6489aa732dfb08aa5606b9d6
+refs/heads/master: 6de7145ca3db231a84b7516a6cb25878da6ebb19
diff --git a/trunk/drivers/vhost/tcm_vhost.c b/trunk/drivers/vhost/tcm_vhost.c
index 74b2edaaf1f6..ed8e2e6c8df2 100644
--- a/trunk/drivers/vhost/tcm_vhost.c
+++ b/trunk/drivers/vhost/tcm_vhost.c
@@ -995,11 +995,15 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl,
 	case VHOST_SCSI_SET_ENDPOINT:
 		if (copy_from_user(&backend, argp, sizeof backend))
 			return -EFAULT;
+		if (backend.reserved != 0)
+			return -EOPNOTSUPP;
 
 		return vhost_scsi_set_endpoint(vs, &backend);
 	case VHOST_SCSI_CLEAR_ENDPOINT:
 		if (copy_from_user(&backend, argp, sizeof backend))
 			return -EFAULT;
+		if (backend.reserved != 0)
+			return -EOPNOTSUPP;
 
 		return vhost_scsi_clear_endpoint(vs, &backend);
 	case VHOST_SCSI_GET_ABI_VERSION:
diff --git a/trunk/drivers/vhost/tcm_vhost.h b/trunk/drivers/vhost/tcm_vhost.h
index e9d5c020fb39..d9e93557d669 100644
--- a/trunk/drivers/vhost/tcm_vhost.h
+++ b/trunk/drivers/vhost/tcm_vhost.h
@@ -93,6 +93,7 @@ struct vhost_scsi_target {
 	int abi_version;
 	char vhost_wwpn[TRANSPORT_IQN_LEN];
 	unsigned short vhost_tpgt;
+	unsigned short reserved;
 };
 
 /* VHOST_SCSI specific defines */