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 b836f0a..806e75b 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 c73dee9..31d9c23 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 0412f3d..c6c3d01 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 21ac92d..28c874f 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 bcffc69..933be22 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 c0b63c0..3534ba1 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 1b4252d..d9a51dc 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 b94cb05..42ac605 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 a6d01f0..813a363 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 6fb064c..4f0f2a0 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 7884d84..fde86b4 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 045696c..f5ef376 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 5ab8f5e..312fa2a 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 adc1697..9fbfe39 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 079ce95..ee9b399 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 34ebd14..4a23ad1 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 094c3be..fb9bf23 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 07fac39..28fba9b 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 6c5dcb1..155862a 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 06df0ce..6fd1ce7 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 d2ef57d..5d94fc0 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 0c3491d..a9cd7c2 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 a64517e..2ce5b20 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 2cf6464..24ab6c0 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 4d9f4c6..2c6c0dd 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 5b30be3..627e16c1 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 4dcaec8..43974a7 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 ba76190..4477577 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 a9d4d3d..d870d11 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 e451c2f..25c5edb 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 f4f0db1..b59f78854 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 454a989..d9d337b 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 8a1a413..5837402a 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 3cd6cf0..768badb 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 d45dabc..ff7e739 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 80c1da8..e5bfe0a 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 8ee6805..9904189 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 ee5f998..3997c5c 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 c9bb93f..847c5b0 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 4784ed9..03ea961 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 277a2ac..b58281a 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 d135945..2cec5cf 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 b1be0b0..9bd7b6d 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 f8feae4..d3988df 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 185ae3f..96f3fa1 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 e7927bb..8a811e6 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 465101b..538d5cd 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 c2a5008..02fd168 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 71e5cc2..1528af0 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 bd31b8c..417916c 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 d7da475..51bf9e2 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 5c5beda..08aaab7 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 6d51998..9c4367e 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 7b90377..9ac81753 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 d964284..75169e2 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 660b467..5446580 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 88a97ce..706b00a 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 3023012..5682f70 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 bfec1e9..d900c79 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 20cac20..bc16307 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 f0404bc..f71ffd2 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 729d258..e330375 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 101ca50..a81e0f4 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 c893552..f3fb008 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 1e7321a..9b4424d 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 cb60925..043d4d3 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 516f827..ae1fb9b 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 226c2a3..7501334 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 779fbea..1fcc7de 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 d7353f1..47c4812 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 fbe589f..c51610c 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 c6d01b8..c4126c4 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 f93a76d..4fde518 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 5cd8a50..1115016 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.
  *