diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c
index 95e3ef82f3b7d40cb302bdf0fd6a1bfb45e47043..218b9deb4f0b3251a0361ecfeeaeb730f4e5ca11 100644
--- a/drivers/base/attribute_container.c
+++ b/drivers/base/attribute_container.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * attribute_container.c - implementation of a simple container for classes
  *
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 22a64fd3309b612ce795e8423259f6a2d45d92d9..46ddb96b917927afb198d82638c044da5e184dd4 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * bus.c - bus driver management
  *
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index eb3af2739537a8def39259206e2345a2adc72c71..e321a7e66a1dadc0eb914f1068e5b40224209702 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * cacheinfo support - processor cache information via sysfs
  *
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 52eb8e644acd1bfa797b4f132474edc931363a1c..61220ea83f8e50602b3ebb7909d28b33cd29de1b 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * class.c - basic device class management
  *
diff --git a/drivers/base/component.c b/drivers/base/component.c
index 89b032f2ffd222ed65ec771634fe1e694b916bbb..c96ed806871951d42441cffed67a590d87329d1f 100644
--- a/drivers/base/component.c
+++ b/drivers/base/component.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Componentized device handling.
  *
diff --git a/drivers/base/container.c b/drivers/base/container.c
index ecbfbe2e908ffad95d0ecfa49ce34d34f3b4225c..ddc68a1e10afdd85c4f0f8f6f9c938aa30e0ec4f 100644
--- a/drivers/base/container.c
+++ b/drivers/base/container.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * System bus type for containers.
  *
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 110230d865270d50465d8d341686a8a51d0ea482..aa0593f1c2b6752094387bcc25ce1ec23fd2e0ca 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/core.c - core driver model code (device registration, etc)
  *
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 58a9b608d8216a67f13d6c514d92290dc0a27de3..31d0ee53613b9dc230d6c7e4b831d17ffc726668 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * CPU subsystem support
  */
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 2c964f56dafe2a98706ca9cd5520e50bacf551f6..47ac37838399a30e45f0697c43036b95087f61c6 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/dd.c - The core device/driver interactions.
  *
diff --git a/drivers/base/devcoredump.c b/drivers/base/devcoredump.c
index 7be310f7db736d153a9d11eb635737de73a0a340..3133684a87547e23714a0b3bd4298acf38bdef18 100644
--- a/drivers/base/devcoredump.c
+++ b/drivers/base/devcoredump.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * This file is provided under the GPLv2 license.
  *
diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index 71d577025285bb816a46973877099fea7747e5d4..1b7a9a8cbd6a227dbfc4d57e41106ef7c397a22f 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/devres.c - device resource management
  *
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index ea9726e714682dc56f0203db09d21322780ecd2a..7c954100d503248d4844c720704c1ad4f022c282 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Contiguous Memory Allocator for DMA mapping framework
  * Copyright (c) 2010-2011 by Samsung Electronics.
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index e584eddef0a72814e1ebe0ff40866619525d21ef..c7e7806a657f43f042a285b1425833e1ea5a873c 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/dma-mapping.c - arch-independent dma-mapping routines
  *
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 4eabfe28d2b39a89955ef820c3b069ba7d3b79e3..6a93c7522dbe739d583ede62598d0e871f7b908b 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * driver.c - centralized device driver management
  *
diff --git a/drivers/base/firmware.c b/drivers/base/firmware.c
index 11381555680943616bbc82a734f4e0e860ee5024..0ef2a36de65ee63d328f889abdd482090449a9b1 100644
--- a/drivers/base/firmware.c
+++ b/drivers/base/firmware.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * firmware.c - firmware subsystem hoohaw.
  *
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 43b97a8137f7f3757b9ba4c28e05c54a7bc43595..7dd36ace615204c0ecf60ca43aa238b8392d5a3b 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * firmware_class.c - Multi purpose firmware loading support
  *
diff --git a/drivers/base/hypervisor.c b/drivers/base/hypervisor.c
index 4f8b741f461526b4c3034cf4690216a03538f2a5..8dbd98c7ed553c91e075f7955f01943b9d7fa330 100644
--- a/drivers/base/hypervisor.c
+++ b/drivers/base/hypervisor.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * hypervisor.c - /sys/hypervisor subsystem.
  *
diff --git a/drivers/base/init.c b/drivers/base/init.c
index 48c0e220acc0a1b8192ca6b523ad35ab7073eba7..0bf84b9e09b2c315be0a574e79430f9e8f180f73 100644
--- a/drivers/base/init.c
+++ b/drivers/base/init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2002-3 Patrick Mochel
  * Copyright (c) 2002-3 Open Source Development Labs
diff --git a/drivers/base/isa.c b/drivers/base/isa.c
index cd6ccdcf9df0c5ef2a37fabb2b4b7bbfa3c88755..61ab202aae432cb6ba52db423b9b5842dcf4f94d 100644
--- a/drivers/base/isa.c
+++ b/drivers/base/isa.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * ISA bus.
  */
diff --git a/drivers/base/map.c b/drivers/base/map.c
index c1d38234d725c858f2b986f4e4d5e37a75449e5c..07daaf6c2cd60dc675125d30c56ef347d9f50d84 100644
--- a/drivers/base/map.c
+++ b/drivers/base/map.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  linux/drivers/base/map.c
  *
diff --git a/drivers/base/module.c b/drivers/base/module.c
index 2a215780eda25c7c33ac44c136c4fadd36238ab8..9e50e55c547aebe471b1220373099145e1d5872e 100644
--- a/drivers/base/module.c
+++ b/drivers/base/module.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * module.c - module sysfs fun for drivers
  *
diff --git a/drivers/base/pinctrl.c b/drivers/base/pinctrl.c
index eb929dd6ef1e2bf117fe15f52c16a009d9b00be6..fec06a1a0e15d64e04c556b583207d89327456e1 100644
--- a/drivers/base/pinctrl.c
+++ b/drivers/base/pinctrl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Driver core interface to the pinctrl subsystem.
  *
diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index e5473525e7b2e1a1006352257fbff437e8d356a1..d7c56d5b06e0fc14abfe27a0e0ef0232d20424d5 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * MSI framework for platform devices
  *
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index c203fb90c1a01d4cbac98bb24211f0decd4cb5c3..be287c7f5a6a8d4b176530fcdd2cfe1d39936e58 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * platform.c - platform 'pseudo' bus for legacy devices
  *
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 851b1b6596a4a11a38858bb1fa67d2cb5ea0679b..f64bf6bebf58bda7cca20ef6a04f631903f975a0 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * property.c - Unified device property interface.
  *
diff --git a/drivers/base/soc.c b/drivers/base/soc.c
index 909dedae4c4e1d4802542e5f33e464da4be0e21d..b1e6e7ca46f0de2d83cf43bebfe774a5853f474f 100644
--- a/drivers/base/soc.c
+++ b/drivers/base/soc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) ST-Ericsson SA 2011
  *
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
index 8d98a329f6ea63a2daf179bb3f15e5307c6a0d13..34f71a46b51c058974ee487e0a6167ef0b35a312 100644
--- a/drivers/base/syscore.c
+++ b/drivers/base/syscore.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  syscore.c - Execution of system core operations.
  *
diff --git a/drivers/base/test/test_async_driver_probe.c b/drivers/base/test/test_async_driver_probe.c
index a3355d66bc12df289130c7e96733d545089fe78d..58b445ed8d8be9f0c233d3a1cd396ce0d900974f 100644
--- a/drivers/base/test/test_async_driver_probe.c
+++ b/drivers/base/test/test_async_driver_probe.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2014 Google, Inc.
  *
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index d936fcf9f1fb985033a28092209d297721d5bfb4..5abc176a296697da2f88e9f342805062d095838b 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * driver/base/topology.c - Populate sysfs with cpu topology information
  *
diff --git a/drivers/base/transport_class.c b/drivers/base/transport_class.c
index f6c453c3816e79e285cd65de6332e9d63ca59aa5..750378341a4362ab28cdeb9532e708f5e27f08db 100644
--- a/drivers/base/transport_class.c
+++ b/drivers/base/transport_class.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * transport_class.c - implementation of generic transport classes
  *                     using attribute_containers
diff --git a/include/linux/device.h b/include/linux/device.h
index 9d32000725da8452fdac148700c16315715bec07..70d352f9083ab9850284600fb6068d6a7f9a0724 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * device.h - generic, centralized driver model
  *