staging: greybus: add SPDX identifiers to all greybus driver files

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/staging/greybus files files with the correct SPDX
license identifier based on the license text in the file itself.  The
SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Vaibhav Hiremath <hvaibhav.linux@gmail.com>
Cc: "Bryan O'Donoghue" <pure.logic@nexus-software.ie>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: David Lin <dtwlin@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

74 files changed, 74 insertions, 0 deletions

diff --git a/drivers/staging/greybus/Documentation/firmware/authenticate.c b/drivers/staging/greybus/Documentation/firmware/authenticate.c
index b836f0a20c36..806e75b7f405 100644
--- a/drivers/staging/greybus/Documentation/firmware/authenticate.c
+++ b/drivers/staging/greybus/Documentation/firmware/authenticate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Sample code to test CAP protocol
  *
diff --git a/drivers/staging/greybus/Documentation/firmware/firmware.c b/drivers/staging/greybus/Documentation/firmware/firmware.c
index c73dee9d13c1..31d9c23e2eeb 100644
--- a/drivers/staging/greybus/Documentation/firmware/firmware.c
+++ b/drivers/staging/greybus/Documentation/firmware/firmware.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Sample code to test firmware-management protocol
  *
diff --git a/drivers/staging/greybus/arche-apb-ctrl.c b/drivers/staging/greybus/arche-apb-ctrl.c
index 0412f3d06efb..c6c3d01395ed 100644
--- a/drivers/staging/greybus/arche-apb-ctrl.c
+++ b/drivers/staging/greybus/arche-apb-ctrl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Arche Platform driver to control APB.
  *
diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c
index 21ac92d0f533..28c874ff16a7 100644
--- a/drivers/staging/greybus/arche-platform.c
+++ b/drivers/staging/greybus/arche-platform.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Arche Platform driver to enable Unipro link.
  *
diff --git a/drivers/staging/greybus/arche_platform.h b/drivers/staging/greybus/arche_platform.h
index bcffc69d0960..933be229b6d9 100644
--- a/drivers/staging/greybus/arche_platform.h
+++ b/drivers/staging/greybus/arche_platform.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Arche Platform driver to enable Unipro link.
  *
diff --git a/drivers/staging/greybus/arpc.h b/drivers/staging/greybus/arpc.h
index c0b63c0130c5..3534ba1a4e6c 100644
--- a/drivers/staging/greybus/arpc.h
+++ b/drivers/staging/greybus/arpc.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.
diff --git a/drivers/staging/greybus/audio_apbridgea.c b/drivers/staging/greybus/audio_apbridgea.c
index 1b4252d5d255..d9a51dcfbaf0 100644
--- a/drivers/staging/greybus/audio_apbridgea.c
+++ b/drivers/staging/greybus/audio_apbridgea.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Audio Device Class Protocol helpers
  *
diff --git a/drivers/staging/greybus/audio_apbridgea.h b/drivers/staging/greybus/audio_apbridgea.h
index b94cb05c89e4..42ac6059bfc7 100644
--- a/drivers/staging/greybus/audio_apbridgea.h
+++ b/drivers/staging/greybus/audio_apbridgea.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-3-Clause
 /**
  * Copyright (c) 2015-2016 Google Inc.
  * All rights reserved.
diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
index a6d01f0761f3..813a3636fb52 100644
--- a/drivers/staging/greybus/audio_codec.c
+++ b/drivers/staging/greybus/audio_codec.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * APBridge ALSA SoC dummy codec driver
  * Copyright 2016 Google Inc.
diff --git a/drivers/staging/greybus/audio_codec.h b/drivers/staging/greybus/audio_codec.h
index 6fb064c69a36..4f0f2a042746 100644
--- a/drivers/staging/greybus/audio_codec.h
+++ b/drivers/staging/greybus/audio_codec.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus audio driver
  * Copyright 2015 Google Inc.
diff --git a/drivers/staging/greybus/audio_gb.c b/drivers/staging/greybus/audio_gb.c
index 7884d8482dc0..fde86b45ef06 100644
--- a/drivers/staging/greybus/audio_gb.c
+++ b/drivers/staging/greybus/audio_gb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Audio Device Class Protocol helpers
  *
diff --git a/drivers/staging/greybus/audio_manager.c b/drivers/staging/greybus/audio_manager.c
index 045696ce85c7..f5ef376467bc 100644
--- a/drivers/staging/greybus/audio_manager.c
+++ b/drivers/staging/greybus/audio_manager.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *
diff --git a/drivers/staging/greybus/audio_manager.h b/drivers/staging/greybus/audio_manager.h
index 5ab8f5e0ed3f..312fa2af1270 100644
--- a/drivers/staging/greybus/audio_manager.h
+++ b/drivers/staging/greybus/audio_manager.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *
diff --git a/drivers/staging/greybus/audio_manager_module.c b/drivers/staging/greybus/audio_manager_module.c
index adc16977452d..9fbfe394e11c 100644
--- a/drivers/staging/greybus/audio_manager_module.c
+++ b/drivers/staging/greybus/audio_manager_module.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *
diff --git a/drivers/staging/greybus/audio_manager_private.h b/drivers/staging/greybus/audio_manager_private.h
index 079ce953c256..ee9b39977b41 100644
--- a/drivers/staging/greybus/audio_manager_private.h
+++ b/drivers/staging/greybus/audio_manager_private.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *
diff --git a/drivers/staging/greybus/audio_manager_sysfs.c b/drivers/staging/greybus/audio_manager_sysfs.c
index 34ebd147052f..4a23ad177e65 100644
--- a/drivers/staging/greybus/audio_manager_sysfs.c
+++ b/drivers/staging/greybus/audio_manager_sysfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *
diff --git a/drivers/staging/greybus/audio_module.c b/drivers/staging/greybus/audio_module.c
index 094c3be79b33..fb9bf23e4407 100644
--- a/drivers/staging/greybus/audio_module.c
+++ b/drivers/staging/greybus/audio_module.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus audio driver
  * Copyright 2015 Google Inc.
diff --git a/drivers/staging/greybus/audio_topology.c b/drivers/staging/greybus/audio_topology.c
index 07fac3948f3a..28fba9bccf29 100644
--- a/drivers/staging/greybus/audio_topology.c
+++ b/drivers/staging/greybus/audio_topology.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus audio driver
  * Copyright 2015-2016 Google Inc.
diff --git a/drivers/staging/greybus/authentication.c b/drivers/staging/greybus/authentication.c
index 6c5dcb1c226b..155862ac6728 100644
--- a/drivers/staging/greybus/authentication.c
+++ b/drivers/staging/greybus/authentication.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Component Authentication Protocol (CAP) Driver.
  *
diff --git a/drivers/staging/greybus/bootrom.c b/drivers/staging/greybus/bootrom.c
index 06df0ce03150..6fd1ce76fa0e 100644
--- a/drivers/staging/greybus/bootrom.c
+++ b/drivers/staging/greybus/bootrom.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * BOOTROM Greybus driver.
  *
diff --git a/drivers/staging/greybus/bundle.c b/drivers/staging/greybus/bundle.c
index d2ef57d090be..5d94fc0735bd 100644
--- a/drivers/staging/greybus/bundle.c
+++ b/drivers/staging/greybus/bundle.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus bundles
  *
diff --git a/drivers/staging/greybus/bundle.h b/drivers/staging/greybus/bundle.h
index 0c3491def96c..a9cd7c241d78 100644
--- a/drivers/staging/greybus/bundle.h
+++ b/drivers/staging/greybus/bundle.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus bundles
  *
diff --git a/drivers/staging/greybus/camera.c b/drivers/staging/greybus/camera.c
index a64517eabff4..2ce5b20a3df0 100644
--- a/drivers/staging/greybus/camera.c
+++ b/drivers/staging/greybus/camera.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Camera protocol driver.
  *
diff --git a/drivers/staging/greybus/connection.c b/drivers/staging/greybus/connection.c
index 2cf64640e8ec..24ab6c0f72ec 100644
--- a/drivers/staging/greybus/connection.c
+++ b/drivers/staging/greybus/connection.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus connections
  *
diff --git a/drivers/staging/greybus/connection.h b/drivers/staging/greybus/connection.h
index 4d9f4c64176c..2c6c0dd50f46 100644
--- a/drivers/staging/greybus/connection.h
+++ b/drivers/staging/greybus/connection.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus connections
  *
diff --git a/drivers/staging/greybus/control.c b/drivers/staging/greybus/control.c
index 5b30be30a3a4..627e16c1d43a 100644
--- a/drivers/staging/greybus/control.c
+++ b/drivers/staging/greybus/control.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus CPort control protocol.
  *
diff --git a/drivers/staging/greybus/control.h b/drivers/staging/greybus/control.h
index 4dcaec8b9cfe..43974a70b241 100644
--- a/drivers/staging/greybus/control.h
+++ b/drivers/staging/greybus/control.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus CPort control protocol
  *
diff --git a/drivers/staging/greybus/core.c b/drivers/staging/greybus/core.c
index ba761905b790..44775772acf2 100644
--- a/drivers/staging/greybus/core.c
+++ b/drivers/staging/greybus/core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus "Core"
  *
diff --git a/drivers/staging/greybus/debugfs.c b/drivers/staging/greybus/debugfs.c
index a9d4d3da99a0..d870d11c767a 100644
--- a/drivers/staging/greybus/debugfs.c
+++ b/drivers/staging/greybus/debugfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus debugfs code
  *
diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c
index e451c2f54a7e..25c5edbfeade 100644
--- a/drivers/staging/greybus/es2.c
+++ b/drivers/staging/greybus/es2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus "AP" USB driver for "ES2" controller chips
  *
diff --git a/drivers/staging/greybus/firmware.h b/drivers/staging/greybus/firmware.h
index f4f0db1cefe8..b59f7885402a 100644
--- a/drivers/staging/greybus/firmware.h
+++ b/drivers/staging/greybus/firmware.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Management Header
  *
diff --git a/drivers/staging/greybus/fw-core.c b/drivers/staging/greybus/fw-core.c
index 454a98957ba5..d9d337ba2073 100644
--- a/drivers/staging/greybus/fw-core.c
+++ b/drivers/staging/greybus/fw-core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Core Bundle Driver.
  *
diff --git a/drivers/staging/greybus/fw-download.c b/drivers/staging/greybus/fw-download.c
index 8a1a413c6cb3..5837402ade44 100644
--- a/drivers/staging/greybus/fw-download.c
+++ b/drivers/staging/greybus/fw-download.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Download Protocol Driver.
  *
diff --git a/drivers/staging/greybus/fw-management.c b/drivers/staging/greybus/fw-management.c
index 3cd6cf0a656b..768badb754f9 100644
--- a/drivers/staging/greybus/fw-management.c
+++ b/drivers/staging/greybus/fw-management.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Management Protocol Driver.
  *
diff --git a/drivers/staging/greybus/gb-camera.h b/drivers/staging/greybus/gb-camera.h
index d45dabc5b367..ff7e739304d6 100644
--- a/drivers/staging/greybus/gb-camera.h
+++ b/drivers/staging/greybus/gb-camera.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Camera protocol driver.
  *
diff --git a/drivers/staging/greybus/gbphy.c b/drivers/staging/greybus/gbphy.c
index 80c1da8224e6..e5bfe0ad0f94 100644
--- a/drivers/staging/greybus/gbphy.c
+++ b/drivers/staging/greybus/gbphy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Bridged-Phy Bus driver
  *
diff --git a/drivers/staging/greybus/gbphy.h b/drivers/staging/greybus/gbphy.h
index 8ee68055ccc4..99041896c973 100644
--- a/drivers/staging/greybus/gbphy.h
+++ b/drivers/staging/greybus/gbphy.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Bridged-Phy Bus driver
  *
diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c
index ee5f998b174f..3997c5cb0e6e 100644
--- a/drivers/staging/greybus/gpio.c
+++ b/drivers/staging/greybus/gpio.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * GPIO Greybus driver.
  *
diff --git a/drivers/staging/greybus/greybus.h b/drivers/staging/greybus/greybus.h
index c9bb93f23927..847c5b0efcfc 100644
--- a/drivers/staging/greybus/greybus.h
+++ b/drivers/staging/greybus/greybus.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver and device API
  *
diff --git a/drivers/staging/greybus/greybus_authentication.h b/drivers/staging/greybus/greybus_authentication.h
index 4784ed98e8a3..03ea9615b217 100644
--- a/drivers/staging/greybus/greybus_authentication.h
+++ b/drivers/staging/greybus/greybus_authentication.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Greybus Component Authentication User Header
  *
diff --git a/drivers/staging/greybus/greybus_firmware.h b/drivers/staging/greybus/greybus_firmware.h
index 277a2acce6fd..b58281a63ba4 100644
--- a/drivers/staging/greybus/greybus_firmware.h
+++ b/drivers/staging/greybus/greybus_firmware.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Greybus Firmware Management User Header
  *
diff --git a/drivers/staging/greybus/greybus_manifest.h b/drivers/staging/greybus/greybus_manifest.h
index d135945cefe1..2cec5cf7a846 100644
--- a/drivers/staging/greybus/greybus_manifest.h
+++ b/drivers/staging/greybus/greybus_manifest.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus manifest definition
  *
diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h
index b1be0b0af464..9bd7b6dfb476 100644
--- a/drivers/staging/greybus/greybus_protocols.h
+++ b/drivers/staging/greybus/greybus_protocols.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.
diff --git a/drivers/staging/greybus/greybus_trace.h b/drivers/staging/greybus/greybus_trace.h
index f8feae4dc3b5..d3988df866ea 100644
--- a/drivers/staging/greybus/greybus_trace.h
+++ b/drivers/staging/greybus/greybus_trace.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver and device API
  *
diff --git a/drivers/staging/greybus/hd.c b/drivers/staging/greybus/hd.c
index 185ae3fa10fd..96f3fa1c62c3 100644
--- a/drivers/staging/greybus/hd.c
+++ b/drivers/staging/greybus/hd.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Host Device
  *
diff --git a/drivers/staging/greybus/hd.h b/drivers/staging/greybus/hd.h
index e7927bb1761c..8a811e6a1637 100644
--- a/drivers/staging/greybus/hd.h
+++ b/drivers/staging/greybus/hd.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Host Device
  *
diff --git a/drivers/staging/greybus/hid.c b/drivers/staging/greybus/hid.c
index 465101bbab69..538d5cd140ca 100644
--- a/drivers/staging/greybus/hid.c
+++ b/drivers/staging/greybus/hid.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * HID class driver for the Greybus.
  *
diff --git a/drivers/staging/greybus/i2c.c b/drivers/staging/greybus/i2c.c
index c2a50087000c..02fd168ed014 100644
--- a/drivers/staging/greybus/i2c.c
+++ b/drivers/staging/greybus/i2c.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * I2C bridge driver for the Greybus "generic" I2C module.
  *
diff --git a/drivers/staging/greybus/interface.c b/drivers/staging/greybus/interface.c
index 71e5cc234e78..1528af096c42 100644
--- a/drivers/staging/greybus/interface.c
+++ b/drivers/staging/greybus/interface.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus interface code
  *
diff --git a/drivers/staging/greybus/interface.h b/drivers/staging/greybus/interface.h
index bd31b8c18d5b..417916c9815d 100644
--- a/drivers/staging/greybus/interface.h
+++ b/drivers/staging/greybus/interface.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Interface Block code
  *
diff --git a/drivers/staging/greybus/light.c b/drivers/staging/greybus/light.c
index d7da475f9d33..51bf9e28aac4 100644
--- a/drivers/staging/greybus/light.c
+++ b/drivers/staging/greybus/light.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Lights protocol driver.
  *
diff --git a/drivers/staging/greybus/log.c b/drivers/staging/greybus/log.c
index 5c5bedaf69a6..08aaab7ddc98 100644
--- a/drivers/staging/greybus/log.c
+++ b/drivers/staging/greybus/log.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver for the log protocol
  *
diff --git a/drivers/staging/greybus/loopback.c b/drivers/staging/greybus/loopback.c
index 6d51998b74b4..9c4367e674ab 100644
--- a/drivers/staging/greybus/loopback.c
+++ b/drivers/staging/greybus/loopback.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Loopback bridge driver for the Greybus loopback module.
  *
diff --git a/drivers/staging/greybus/manifest.c b/drivers/staging/greybus/manifest.c
index 7b903770a684..9ac81753774b 100644
--- a/drivers/staging/greybus/manifest.c
+++ b/drivers/staging/greybus/manifest.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus manifest parsing
  *
diff --git a/drivers/staging/greybus/manifest.h b/drivers/staging/greybus/manifest.h
index d96428407cd7..75169e207397 100644
--- a/drivers/staging/greybus/manifest.h
+++ b/drivers/staging/greybus/manifest.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus manifest parsing
  *
diff --git a/drivers/staging/greybus/module.c b/drivers/staging/greybus/module.c
index 660b4674a76f..54465805cf83 100644
--- a/drivers/staging/greybus/module.c
+++ b/drivers/staging/greybus/module.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Module code
  *
diff --git a/drivers/staging/greybus/module.h b/drivers/staging/greybus/module.h
index 88a97ce04243..706b00a66023 100644
--- a/drivers/staging/greybus/module.h
+++ b/drivers/staging/greybus/module.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Module code
  *
diff --git a/drivers/staging/greybus/operation.c b/drivers/staging/greybus/operation.c
index 3023012808d9..5682f70367e7 100644
--- a/drivers/staging/greybus/operation.c
+++ b/drivers/staging/greybus/operation.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *
diff --git a/drivers/staging/greybus/operation.h b/drivers/staging/greybus/operation.h
index bfec1e93384e..d900c7947902 100644
--- a/drivers/staging/greybus/operation.h
+++ b/drivers/staging/greybus/operation.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *
diff --git a/drivers/staging/greybus/power_supply.c b/drivers/staging/greybus/power_supply.c
index 20cac20518d7..bc16307c73b8 100644
--- a/drivers/staging/greybus/power_supply.c
+++ b/drivers/staging/greybus/power_supply.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Power Supply driver for a Greybus module.
  *
diff --git a/drivers/staging/greybus/pwm.c b/drivers/staging/greybus/pwm.c
index f0404bc37123..f71ffd2248e0 100644
--- a/drivers/staging/greybus/pwm.c
+++ b/drivers/staging/greybus/pwm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * PWM Greybus driver.
  *
diff --git a/drivers/staging/greybus/raw.c b/drivers/staging/greybus/raw.c
index 729d25811568..e330375d8105 100644
--- a/drivers/staging/greybus/raw.c
+++ b/drivers/staging/greybus/raw.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver for the Raw protocol
  *
diff --git a/drivers/staging/greybus/sdio.c b/drivers/staging/greybus/sdio.c
index 101ca5097fc9..a81e0f4286ef 100644
--- a/drivers/staging/greybus/sdio.c
+++ b/drivers/staging/greybus/sdio.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * SD/MMC Greybus driver.
  *
diff --git a/drivers/staging/greybus/spi.c b/drivers/staging/greybus/spi.c
index c893552b5c0b..f3fb00826b6e 100644
--- a/drivers/staging/greybus/spi.c
+++ b/drivers/staging/greybus/spi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * SPI bridge PHY driver.
  *
diff --git a/drivers/staging/greybus/spilib.c b/drivers/staging/greybus/spilib.c
index 1e7321a1404c..9b4424d9910e 100644
--- a/drivers/staging/greybus/spilib.c
+++ b/drivers/staging/greybus/spilib.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus SPI library
  *
diff --git a/drivers/staging/greybus/spilib.h b/drivers/staging/greybus/spilib.h
index cb6092578a92..043d4d32c3ee 100644
--- a/drivers/staging/greybus/spilib.h
+++ b/drivers/staging/greybus/spilib.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus SPI library header
  *
diff --git a/drivers/staging/greybus/svc.c b/drivers/staging/greybus/svc.c
index 516f827e5ed9..ae1fb9bfea83 100644
--- a/drivers/staging/greybus/svc.c
+++ b/drivers/staging/greybus/svc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * SVC Greybus driver.
  *
diff --git a/drivers/staging/greybus/svc.h b/drivers/staging/greybus/svc.h
index 226c2a396fc8..7501334d6c7e 100644
--- a/drivers/staging/greybus/svc.h
+++ b/drivers/staging/greybus/svc.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus SVC code
  *
diff --git a/drivers/staging/greybus/svc_watchdog.c b/drivers/staging/greybus/svc_watchdog.c
index 779fbea5d4ba..1fcc7dec4739 100644
--- a/drivers/staging/greybus/svc_watchdog.c
+++ b/drivers/staging/greybus/svc_watchdog.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * SVC Greybus "watchdog" driver.
  *
diff --git a/drivers/staging/greybus/tools/lbtest b/drivers/staging/greybus/tools/lbtest
index d7353f1a2a6f..47c481239e98 100755
--- a/drivers/staging/greybus/tools/lbtest
+++ b/drivers/staging/greybus/tools/lbtest
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+# SPDX-License-Identifier: BSD-3-Clause
 
 # Copyright (c) 2015 Google, Inc.
 # Copyright (c) 2015 Linaro, Ltd.
diff --git a/drivers/staging/greybus/tools/loopback_test.c b/drivers/staging/greybus/tools/loopback_test.c
index fbe589fca840..c51610ce24af 100644
--- a/drivers/staging/greybus/tools/loopback_test.c
+++ b/drivers/staging/greybus/tools/loopback_test.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: BSD-3-Clause
 /*
  * Loopback test application
  *
diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index c6d01b800d3c..c4126c480c3c 100644
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * UART driver for the Greybus "generic" UART module.
  *
diff --git a/drivers/staging/greybus/usb.c b/drivers/staging/greybus/usb.c
index f93a76d02de6..4fde518d9b14 100644
--- a/drivers/staging/greybus/usb.c
+++ b/drivers/staging/greybus/usb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * USB host driver for the Greybus "generic" USB module.
  *
diff --git a/drivers/staging/greybus/vibrator.c b/drivers/staging/greybus/vibrator.c
index 5cd8a50d41ad..111501643af2 100644
--- a/drivers/staging/greybus/vibrator.c
+++ b/drivers/staging/greybus/vibrator.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Vibrator protocol driver.
  *