[PATCH] uio: add SPDX license tags

[Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>]

For those without any license text present or short reference
to GPL, add SPDX tag.

Signed-off-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
---
 drivers/uio/uio_cif.c           | 4 +---
 drivers/uio/uio_fsl_elbc_gpcm.c | 1 +
 drivers/uio/uio_hv_generic.c    | 4 +---
 drivers/uio/uio_netx.c          | 3 +--
 drivers/uio/uio_pci_generic.c   | 3 +--
 drivers/uio/uio_sercos3.c       | 1 +
 6 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/uio/uio_cif.c b/drivers/uio/uio_cif.c
index 30f533ce3758..ab60186f9759 100644
--- a/drivers/uio/uio_cif.c
+++ b/drivers/uio/uio_cif.c
@@ -1,11 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * UIO Hilscher CIF card driver
  *
  * (C) 2007 Hans J. Koch <hjk@xxxxxxxxxxxx>
  * Original code (C) 2005 Benedikt Spranger <b.spranger@xxxxxxxxxxxxx>
- *
- * Licensed under GPL version 2 only.
- *
  */
 
 #include <linux/device.h>
diff --git a/drivers/uio/uio_fsl_elbc_gpcm.c b/drivers/uio/uio_fsl_elbc_gpcm.c
index b55191335d90..bbc17effae5e 100644
--- a/drivers/uio/uio_fsl_elbc_gpcm.c
+++ b/drivers/uio/uio_fsl_elbc_gpcm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* uio_fsl_elbc_gpcm: UIO driver for eLBC/GPCM peripherals
 
    Copyright (C) 2014 Linutronix GmbH
diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c
index c690d100adcd..e401be8321ab 100644
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * uio_hv_generic - generic UIO driver for VMBus
  *
  * Copyright (c) 2013-2016 Brocade Communications Systems, Inc.
  * Copyright (c) 2016, Microsoft Corporation.
  *
- *
- * This work is licensed under the terms of the GNU GPL, version 2.
- *
  * Since the driver does not declare any device ids, you must allocate
  * id and bind the device to the driver yourself.  For example:
  *
diff --git a/drivers/uio/uio_netx.c b/drivers/uio/uio_netx.c
index 4c345db8b016..9ae29ffde410 100644
--- a/drivers/uio/uio_netx.c
+++ b/drivers/uio/uio_netx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * UIO driver for Hilscher NetX based fieldbus cards (cifX, comX).
  * See http://www.hilscher.com for details.
@@ -5,8 +6,6 @@
  * (C) 2007 Hans J. Koch <hjk@xxxxxxxxxxxx>
  * (C) 2008 Manuel Traut <manut@xxxxxxxxxxxxx>
  *
- * Licensed under GPL version 2 only.
- *
  */
 
 #include <linux/device.h>
diff --git a/drivers/uio/uio_pci_generic.c b/drivers/uio/uio_pci_generic.c
index a56fdf972dbe..8773e373ffe5 100644
--- a/drivers/uio/uio_pci_generic.c
+++ b/drivers/uio/uio_pci_generic.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /* uio_pci_generic - generic UIO driver for PCI 2.3 devices
  *
  * Copyright (C) 2009 Red Hat, Inc.
  * Author: Michael S. Tsirkin <mst@xxxxxxxxxx>
  *
- * This work is licensed under the terms of the GNU GPL, version 2.
- *
  * Since the driver does not declare any device ids, you must allocate
  * id and bind the device to the driver yourself.  For example:
  *
diff --git a/drivers/uio/uio_sercos3.c b/drivers/uio/uio_sercos3.c
index 9cfdfcafa262..9658a0887fee 100644
--- a/drivers/uio/uio_sercos3.c
+++ b/drivers/uio/uio_sercos3.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* sercos3: UIO driver for the Automata Sercos III PCI card
 
    Copyright (C) 2008 Linutronix GmbH
-- 
2.18.0

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