License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

135 files changed, 135 insertions, 0 deletions

diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index aac6098..8de9617 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 
 #
 # Makefile for the linux kernel.
diff --git a/arch/sparc/kernel/apc.c b/arch/sparc/kernel/apc.c
index c988e7f..ecd05bc 100644
--- a/arch/sparc/kernel/apc.c
+++ b/arch/sparc/kernel/apc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* apc - Driver implementation for power management functions
  * of Aurora Personality Chip (APC) on SPARCstation-4/5 and
  * derivatives.
diff --git a/arch/sparc/kernel/asm-offsets.c b/arch/sparc/kernel/asm-offsets.c
index 3f09e1c..5784f2d 100644
--- a/arch/sparc/kernel/asm-offsets.c
+++ b/arch/sparc/kernel/asm-offsets.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * This program is used to generate definitions needed by
  * assembly language modules.
diff --git a/arch/sparc/kernel/audit.c b/arch/sparc/kernel/audit.c
index 2585c1e..a6e91bf 100644
--- a/arch/sparc/kernel/audit.c
+++ b/arch/sparc/kernel/audit.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/audit.h>
diff --git a/arch/sparc/kernel/auxio_32.c b/arch/sparc/kernel/auxio_32.c
index ae88c22..a32d588 100644
--- a/arch/sparc/kernel/auxio_32.c
+++ b/arch/sparc/kernel/auxio_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* auxio.c: Probing for the Sparc AUXIO register at boot time.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
diff --git a/arch/sparc/kernel/auxio_64.c b/arch/sparc/kernel/auxio_64.c
index 086435c..4e8f56c 100644
--- a/arch/sparc/kernel/auxio_64.c
+++ b/arch/sparc/kernel/auxio_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* auxio.c: Probing for the Sparc AUXIO register at boot time.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
diff --git a/arch/sparc/kernel/btext.c b/arch/sparc/kernel/btext.c
index 987f7ec..5869773 100644
--- a/arch/sparc/kernel/btext.c
+++ b/arch/sparc/kernel/btext.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Procedures for drawing on the screen early on in the boot process.
  *
diff --git a/arch/sparc/kernel/central.c b/arch/sparc/kernel/central.c
index 4696958..38ae4fd 100644
--- a/arch/sparc/kernel/central.c
+++ b/arch/sparc/kernel/central.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* central.c: Central FHC driver for Sunfire/Starfire/Wildfire.
  *
  * Copyright (C) 1997, 1999, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/cherrs.S b/arch/sparc/kernel/cherrs.S
index 655628de..7f3d3d2 100644
--- a/arch/sparc/kernel/cherrs.S
+++ b/arch/sparc/kernel/cherrs.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	/* These get patched into the trap table at boot time
 	 * once we know we have a cheetah processor.
 	 */
diff --git a/arch/sparc/kernel/compat_audit.c b/arch/sparc/kernel/compat_audit.c
index e5611cd..10eeb4f 100644
--- a/arch/sparc/kernel/compat_audit.c
+++ b/arch/sparc/kernel/compat_audit.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #define __32bit_syscall_numbers__
 #include <asm/unistd.h>
 #include "kernel.h"
diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c
index ef4f18f..4401dee3 100644
--- a/arch/sparc/kernel/cpu.c
+++ b/arch/sparc/kernel/cpu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* cpu.c: Dinky routines to look for the kind of Sparc cpu
  *        we are on.
  *
diff --git a/arch/sparc/kernel/cpumap.c b/arch/sparc/kernel/cpumap.c
index 90d550b..d1d5282 100644
--- a/arch/sparc/kernel/cpumap.c
+++ b/arch/sparc/kernel/cpumap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* cpumap.c: used for optimizing CPU assignment
  *
  * Copyright (C) 2009 Hong H. Pham <hong.pham@windriver.com>
diff --git a/arch/sparc/kernel/cpumap.h b/arch/sparc/kernel/cpumap.h
index 9dac398..7d5b774 100644
--- a/arch/sparc/kernel/cpumap.h
+++ b/arch/sparc/kernel/cpumap.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _CPUMAP_H
 #define _CPUMAP_H
 
diff --git a/arch/sparc/kernel/devices.c b/arch/sparc/kernel/devices.c
index 8d5d09f..23b6e50 100644
--- a/arch/sparc/kernel/devices.c
+++ b/arch/sparc/kernel/devices.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* devices.c: Initial scan of the prom device tree for important
  *	      Sparc device nodes which we need to find.
  *
diff --git a/arch/sparc/kernel/dma.c b/arch/sparc/kernel/dma.c
index b667aa6..f73e759 100644
--- a/arch/sparc/kernel/dma.c
+++ b/arch/sparc/kernel/dma.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/dma-mapping.h>
 #include <linux/dma-debug.h>
diff --git a/arch/sparc/kernel/dtlb_miss.S b/arch/sparc/kernel/dtlb_miss.S
index 09a6a15..fb9c788 100644
--- a/arch/sparc/kernel/dtlb_miss.S
+++ b/arch/sparc/kernel/dtlb_miss.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* DTLB ** ICACHE line 1: Context 0 check and TSB load	*/
 	ldxa	[%g0] ASI_DMMU_TSB_8KB_PTR, %g1	! Get TSB 8K pointer
 	ldxa	[%g0] ASI_DMMU, %g6		! Get TAG TARGET
diff --git a/arch/sparc/kernel/dtlb_prot.S b/arch/sparc/kernel/dtlb_prot.S
index 4087a62..9f94577 100644
--- a/arch/sparc/kernel/dtlb_prot.S
+++ b/arch/sparc/kernel/dtlb_prot.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * dtlb_prot.S: DTLB protection trap strategy.
  *              This is included directly into the trap table.
diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
index acf8314..264b186 100644
--- a/arch/sparc/kernel/ebus.c
+++ b/arch/sparc/kernel/ebus.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* ebus.c: EBUS DMA library code.
  *
  * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index d85bdb9..358fe4e 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* arch/sparc/kernel/entry.S:  Sparc trap low-level entry points.
  *
  * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h
index 0f67942..7378567 100644
--- a/arch/sparc/kernel/entry.h
+++ b/arch/sparc/kernel/entry.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ENTRY_H
 #define _ENTRY_H
 
diff --git a/arch/sparc/kernel/etrap_32.S b/arch/sparc/kernel/etrap_32.S
index e3e80d6..9f243f9 100644
--- a/arch/sparc/kernel/etrap_32.S
+++ b/arch/sparc/kernel/etrap_32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * etrap.S: Sparc trap window preparation for entry into the
  *          Linux kernel.
diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S
index 5c23746..5c77a2e 100644
--- a/arch/sparc/kernel/etrap_64.S
+++ b/arch/sparc/kernel/etrap_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * etrap.S: Preparing for entry into the kernel on Sparc V9.
  *
diff --git a/arch/sparc/kernel/fpu_traps.S b/arch/sparc/kernel/fpu_traps.S
index 336d275..051659e 100644
--- a/arch/sparc/kernel/fpu_traps.S
+++ b/arch/sparc/kernel/fpu_traps.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	/* This is trivial with the new code... */
 	.globl		do_fpdis
 	.type		do_fpdis,#function
diff --git a/arch/sparc/kernel/ftrace.c b/arch/sparc/kernel/ftrace.c
index cec54dc..915dda4 100644
--- a/arch/sparc/kernel/ftrace.c
+++ b/arch/sparc/kernel/ftrace.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/spinlock.h>
 #include <linux/hardirq.h>
 #include <linux/ftrace.h>
diff --git a/arch/sparc/kernel/getsetcc.S b/arch/sparc/kernel/getsetcc.S
index a14d272..181e09f 100644
--- a/arch/sparc/kernel/getsetcc.S
+++ b/arch/sparc/kernel/getsetcc.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	.globl		getcc
 	.type		getcc,#function
 getcc:
diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index 7274e43..e55f2c0 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * head.S: The initial boot code for the Sparc port of Linux.
  *
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S
index 4de9fbd..9e293de 100644
--- a/arch/sparc/kernel/head_64.S
+++ b/arch/sparc/kernel/head_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* head.S: Initial boot code for the Sparc64 port of Linux.
  *
  * Copyright (C) 1996, 1997, 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/hvapi.c b/arch/sparc/kernel/hvapi.c
index d41ce33..a2bc1b2 100644
--- a/arch/sparc/kernel/hvapi.c
+++ b/arch/sparc/kernel/hvapi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* hvapi.c: Hypervisor API management.
  *
  * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/hvcalls.S b/arch/sparc/kernel/hvcalls.S
index e57007f..bdfd3d8 100644
--- a/arch/sparc/kernel/hvcalls.S
+++ b/arch/sparc/kernel/hvcalls.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	/* %o0: devhandle
 	 * %o1:	devino
 	 *
diff --git a/arch/sparc/kernel/hvtramp.S b/arch/sparc/kernel/hvtramp.S
index cdbfec2..f392204 100644
--- a/arch/sparc/kernel/hvtramp.S
+++ b/arch/sparc/kernel/hvtramp.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* hvtramp.S: Hypervisor start-cpu trampoline code.
  *
  * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/idprom.c b/arch/sparc/kernel/idprom.c
index f95dd11..d6c46d5 100644
--- a/arch/sparc/kernel/idprom.c
+++ b/arch/sparc/kernel/idprom.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * idprom.c: Routines to load the idprom into kernel addresses and
  *           interpret the data contained within.
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
index fcbcc031..b08dc34 100644
--- a/arch/sparc/kernel/iommu.c
+++ b/arch/sparc/kernel/iommu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* iommu.c: Generic sparc64 IOMMU support.
  *
  * Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/iommu_common.h b/arch/sparc/kernel/iommu_common.h
index 5ea5c19..e3c02ba 100644
--- a/arch/sparc/kernel/iommu_common.h
+++ b/arch/sparc/kernel/iommu_common.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* iommu_common.h: UltraSparc SBUS/PCI common iommu declarations.
  *
  * Copyright (C) 1999, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 12894f2..7eeef80 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * ioport.c:  Simple io mapping allocator.
  *
diff --git a/arch/sparc/kernel/irq.h b/arch/sparc/kernel/irq.h
index 70a0b8d..b02026a 100644
--- a/arch/sparc/kernel/irq.h
+++ b/arch/sparc/kernel/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <linux/platform_device.h>
 
 #include <asm/cpu_type.h>
diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index cac4a55..e8452be 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Interrupt request handling routines. On the
  * Sparc the IRQs are basically 'cast in stone'
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index 99dd133..d66dde8 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* irq.c: UltraSparc IRQ handling/init/registry.
  *
  * Copyright (C) 1997, 2007, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/itlb_miss.S b/arch/sparc/kernel/itlb_miss.S
index 5a8377b..5a5d924 100644
--- a/arch/sparc/kernel/itlb_miss.S
+++ b/arch/sparc/kernel/itlb_miss.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* ITLB ** ICACHE line 1: Context 0 check and TSB load	*/
 	ldxa	[%g0] ASI_IMMU_TSB_8KB_PTR, %g1	! Get TSB 8K pointer
 	ldxa	[%g0] ASI_IMMU, %g6		! Get TAG TARGET
diff --git a/arch/sparc/kernel/ivec.S b/arch/sparc/kernel/ivec.S
index d29f92e..94ba2c3 100644
--- a/arch/sparc/kernel/ivec.S
+++ b/arch/sparc/kernel/ivec.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	/* The registers for cross calls will be:
 	 *
 	 * DATA 0: [low 32-bits]  Address of function to call, jmp to this
diff --git a/arch/sparc/kernel/jump_label.c b/arch/sparc/kernel/jump_label.c
index 93adde1..7f8eac5 100644
--- a/arch/sparc/kernel/jump_label.c
+++ b/arch/sparc/kernel/jump_label.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/mutex.h>
diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h
index b625db4..ddffd36 100644
--- a/arch/sparc/kernel/kernel.h
+++ b/arch/sparc/kernel/kernel.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __SPARC_KERNEL_H
 #define __SPARC_KERNEL_H
 
diff --git a/arch/sparc/kernel/kgdb_32.c b/arch/sparc/kernel/kgdb_32.c
index 6e8e318..5868fc3 100644
--- a/arch/sparc/kernel/kgdb_32.c
+++ b/arch/sparc/kernel/kgdb_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* kgdb.c: KGDB support for 32-bit sparc.
  *
  * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/kgdb_64.c b/arch/sparc/kernel/kgdb_64.c
index cbf21d0..d5f7dc6 100644
--- a/arch/sparc/kernel/kgdb_64.c
+++ b/arch/sparc/kernel/kgdb_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* kgdb.c: KGDB support for 64-bit sparc.
  *
  * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/kprobes.c b/arch/sparc/kernel/kprobes.c
index 2d13a4f..ab4ba43 100644
--- a/arch/sparc/kernel/kprobes.c
+++ b/arch/sparc/kernel/kprobes.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* arch/sparc64/kernel/kprobes.c
  *
  * Copyright (C) 2004 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/kstack.h b/arch/sparc/kernel/kstack.h
index 53dfb92..b3c5e8f 100644
--- a/arch/sparc/kernel/kstack.h
+++ b/arch/sparc/kernel/kstack.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _KSTACK_H
 #define _KSTACK_H
 
diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S
index f22bec0..1cf91c0 100644
--- a/arch/sparc/kernel/ktlb.S
+++ b/arch/sparc/kernel/ktlb.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* arch/sparc64/kernel/ktlb.S: Kernel mapping TLB miss handling.
  *
  * Copyright (C) 1995, 1997, 2005, 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c
index acffbc8..86b625f 100644
--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* ldc.c: Logical Domain Channel link-layer protocol driver.
  *
  * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index afcdd5e..84b2337 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
  * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
diff --git a/arch/sparc/kernel/leon_pci.c b/arch/sparc/kernel/leon_pci.c
index 98c223e..15b5916 100644
--- a/arch/sparc/kernel/leon_pci.c
+++ b/arch/sparc/kernel/leon_pci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * leon_pci.c: LEON Host PCI support
  *
diff --git a/arch/sparc/kernel/leon_pci_grpci1.c b/arch/sparc/kernel/leon_pci_grpci1.c
index 83ba500..e6935d0 100644
--- a/arch/sparc/kernel/leon_pci_grpci1.c
+++ b/arch/sparc/kernel/leon_pci_grpci1.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * leon_pci_grpci1.c: GRPCI1 Host PCI driver
  *
diff --git a/arch/sparc/kernel/leon_pci_grpci2.c b/arch/sparc/kernel/leon_pci_grpci2.c
index ff0e5c9..ca22f93 100644
--- a/arch/sparc/kernel/leon_pci_grpci2.c
+++ b/arch/sparc/kernel/leon_pci_grpci2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * leon_pci_grpci2.c: GRPCI2 Host PCI driver
  *
diff --git a/arch/sparc/kernel/leon_pmc.c b/arch/sparc/kernel/leon_pmc.c
index ddcf950..065e2d4 100644
--- a/arch/sparc/kernel/leon_pmc.c
+++ b/arch/sparc/kernel/leon_pmc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* leon_pmc.c: LEON Power-down cpu_idle() handler
  *
  * Copyright (C) 2011 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index db7acf2..da6f148 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* leon_smp.c: Sparc-Leon SMP support.
  *
  * based on sun4m_smp.c
diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
index fa466ce..1ef6156 100644
--- a/arch/sparc/kernel/mdesc.c
+++ b/arch/sparc/kernel/mdesc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* mdesc.c: Sun4V machine description handling.
  *
  * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/misctrap.S b/arch/sparc/kernel/misctrap.S
index 9276d2f..b5c8417 100644
--- a/arch/sparc/kernel/misctrap.S
+++ b/arch/sparc/kernel/misctrap.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifdef CONFIG_KGDB
 	.globl		arch_kgdb_breakpoint
 	.type		arch_kgdb_breakpoint,#function
diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c
index 192a617..df39580 100644
--- a/arch/sparc/kernel/module.c
+++ b/arch/sparc/kernel/module.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Kernel module help for sparc64.
  *
  * Copyright (C) 2001 Rusty Russell.
diff --git a/arch/sparc/kernel/of_device_32.c b/arch/sparc/kernel/of_device_32.c
index 185aa96..3641a29 100644
--- a/arch/sparc/kernel/of_device_32.c
+++ b/arch/sparc/kernel/of_device_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c
index 7bbdc26..44e4d44 100644
--- a/arch/sparc/kernel/of_device_64.c
+++ b/arch/sparc/kernel/of_device_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
diff --git a/arch/sparc/kernel/of_device_common.h b/arch/sparc/kernel/of_device_common.h
index cdfd239..3d66230 100644
--- a/arch/sparc/kernel/of_device_common.h
+++ b/arch/sparc/kernel/of_device_common.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _OF_DEVICE_COMMON_H
 #define _OF_DEVICE_COMMON_H
 
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 3f8670c..220d0f3 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci.c: UltraSparc PCI controller support.
  *
  * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@redhat.com)
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c
index 33524c1..1e10fb26 100644
--- a/arch/sparc/kernel/pci_common.c
+++ b/arch/sparc/kernel/pci_common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci_common.c: PCI controller common support.
  *
  * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_fire.c b/arch/sparc/kernel/pci_fire.c
index 11a1f0d..be71ae0 100644
--- a/arch/sparc/kernel/pci_fire.c
+++ b/arch/sparc/kernel/pci_fire.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci_fire.c: Sun4u platform PCI-E controller support.
  *
  * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h
index 37222ca..ac17296 100644
--- a/arch/sparc/kernel/pci_impl.h
+++ b/arch/sparc/kernel/pci_impl.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* pci_impl.h: Helper definitions for PCI controller support.
  *
  * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c
index 84e16d8..1994d76 100644
--- a/arch/sparc/kernel/pci_msi.c
+++ b/arch/sparc/kernel/pci_msi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci_msi.c: Sparc64 MSI support common layer.
  *
  * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_psycho.c b/arch/sparc/kernel/pci_psycho.c
index 7dce27b..f413371 100644
--- a/arch/sparc/kernel/pci_psycho.c
+++ b/arch/sparc/kernel/pci_psycho.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci_psycho.c: PSYCHO/U2P specific PCI controller support.
  *
  * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_sabre.c b/arch/sparc/kernel/pci_sabre.c
index 00a616f..8107286 100644
--- a/arch/sparc/kernel/pci_sabre.c
+++ b/arch/sparc/kernel/pci_sabre.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci_sabre.c: Sabre specific PCI controller support.
  *
  * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_schizo.c b/arch/sparc/kernel/pci_schizo.c
index c664d3e..934b97c 100644
--- a/arch/sparc/kernel/pci_schizo.c
+++ b/arch/sparc/kernel/pci_schizo.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
  *
  * Copyright (C) 2001, 2002, 2003, 2007, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c
index 9ebebf1..2493672 100644
--- a/arch/sparc/kernel/pci_sun4v.c
+++ b/arch/sparc/kernel/pci_sun4v.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pci_sun4v.c: SUN4V specific PCI controller support.
  *
  * Copyright (C) 2006, 2007, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_sun4v.h b/arch/sparc/kernel/pci_sun4v.h
index 22603a4..d47263a 100644
--- a/arch/sparc/kernel/pci_sun4v.h
+++ b/arch/sparc/kernel/pci_sun4v.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* pci_sun4v.h: SUN4V specific PCI controller support.
  *
  * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/pci_sun4v_asm.S b/arch/sparc/kernel/pci_sun4v_asm.S
index 578f096..2b80518 100644
--- a/arch/sparc/kernel/pci_sun4v_asm.S
+++ b/arch/sparc/kernel/pci_sun4v_asm.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* pci_sun4v_asm: Hypervisor calls for PCI support.
  *
  * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 4a133c0..22f8774 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * pcic.c: MicroSPARC-IIep PCI controller support
  *
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 710f327..5c1f547 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Performance event support for sparc64.
  *
  * Copyright (C) 2009, 2010 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/pmc.c b/arch/sparc/kernel/pmc.c
index 3b26cf6..b5c1eb3 100644
--- a/arch/sparc/kernel/pmc.c
+++ b/arch/sparc/kernel/pmc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* pmc - Driver implementation for power management functions
  * of Power Management Controller (PMC) on SPARCstation-Voyager.
  *
diff --git a/arch/sparc/kernel/power.c b/arch/sparc/kernel/power.c
index 4b60f38..92627ab 100644
--- a/arch/sparc/kernel/power.c
+++ b/arch/sparc/kernel/power.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* power.c: Power management driver.
  *
  * Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index 9245f93..d9662cf 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*  linux/arch/sparc/kernel/process.c
  *
  *  Copyright (C) 1995, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index 44e5da4..318efd7 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*  arch/sparc64/kernel/process.c
  *
  *  Copyright (C) 1995, 1996, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/prom.h b/arch/sparc/kernel/prom.h
index 890281b..26a1cca 100644
--- a/arch/sparc/kernel/prom.h
+++ b/arch/sparc/kernel/prom.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __PROM_H
 #define __PROM_H
 
diff --git a/arch/sparc/kernel/prom_irqtrans.c b/arch/sparc/kernel/prom_irqtrans.c
index 40e4936..f3fecac 100644
--- a/arch/sparc/kernel/prom_irqtrans.c
+++ b/arch/sparc/kernel/prom_irqtrans.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/init.h>
diff --git a/arch/sparc/kernel/psycho_common.c b/arch/sparc/kernel/psycho_common.c
index 8db48e8..81aa91e 100644
--- a/arch/sparc/kernel/psycho_common.c
+++ b/arch/sparc/kernel/psycho_common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* psycho_common.c: Code common to PSYCHO and derivative PCI controllers.
  *
  * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/psycho_common.h b/arch/sparc/kernel/psycho_common.h
index 05a6e30..6925231c 100644
--- a/arch/sparc/kernel/psycho_common.h
+++ b/arch/sparc/kernel/psycho_common.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _PSYCHO_COMMON_H
 #define _PSYCHO_COMMON_H
 
diff --git a/arch/sparc/kernel/ptrace_32.c b/arch/sparc/kernel/ptrace_32.c
index eca3dc7..16b50af 100644
--- a/arch/sparc/kernel/ptrace_32.c
+++ b/arch/sparc/kernel/ptrace_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* ptrace.c: Sparc process tracing support.
  *
  * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/reboot.c b/arch/sparc/kernel/reboot.c
index eba7d91..7933ee3 100644
--- a/arch/sparc/kernel/reboot.c
+++ b/arch/sparc/kernel/reboot.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* reboot.c: reboot/shutdown/halt/poweroff handling
  *
  * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/rtrap_32.S b/arch/sparc/kernel/rtrap_32.S
index 6c34de0..dca8ed8 100644
--- a/arch/sparc/kernel/rtrap_32.S
+++ b/arch/sparc/kernel/rtrap_32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * rtrap.S: Return from Sparc trap low-level code.
  *
diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
index dff86fa..0b21042 100644
--- a/arch/sparc/kernel/rtrap_64.S
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * rtrap.S: Preparing for return from trap on Sparc V9.
  *
diff --git a/arch/sparc/kernel/sbus.c b/arch/sparc/kernel/sbus.c
index be5bdf9..c133dfc 100644
--- a/arch/sparc/kernel/sbus.c
+++ b/arch/sparc/kernel/sbus.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * sbus.c: UltraSparc SBUS controller support.
  *
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index 6722308..2e3a3e2 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  linux/arch/sparc/kernel/setup.c
  *
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index db4c4d7..34f7a53 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  linux/arch/sparc64/kernel/setup.c
  *
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
index 0e4c08c..5c572de 100644
--- a/arch/sparc/kernel/signal32.c
+++ b/arch/sparc/kernel/signal32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*  arch/sparc64/kernel/signal32.c
  *
  *  Copyright (C) 1991, 1992  Linus Torvalds
diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index 62c3e25..5665261 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*  linux/arch/sparc/kernel/signal.c
  *
  *  Copyright (C) 1991, 1992  Linus Torvalds
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
index 965d50e..20426a1 100644
--- a/arch/sparc/kernel/signal_64.c
+++ b/arch/sparc/kernel/signal_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  arch/sparc64/kernel/signal.c
  *
diff --git a/arch/sparc/kernel/sigutil.h b/arch/sparc/kernel/sigutil.h
index d223aa4..21d332d 100644
--- a/arch/sparc/kernel/sigutil.h
+++ b/arch/sparc/kernel/sigutil.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _SIGUTIL_H
 #define _SIGUTIL_H
 
diff --git a/arch/sparc/kernel/sigutil_32.c b/arch/sparc/kernel/sigutil_32.c
index e5fe8ce..1e9fae5 100644
--- a/arch/sparc/kernel/sigutil_32.c
+++ b/arch/sparc/kernel/sigutil_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/thread_info.h>
diff --git a/arch/sparc/kernel/sigutil_64.c b/arch/sparc/kernel/sigutil_64.c
index 36aadcb..512e463 100644
--- a/arch/sparc/kernel/sigutil_64.c
+++ b/arch/sparc/kernel/sigutil_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/thread_info.h>
diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c
index e80e6ba..e078680 100644
--- a/arch/sparc/kernel/smp_32.c
+++ b/arch/sparc/kernel/smp_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* smp.c: Sparc SMP support.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 4898329..c50182c 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* smp.c: Sparc64 SMP support.
  *
  * Copyright (C) 1997, 2007, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/spiterrs.S b/arch/sparc/kernel/spiterrs.S
index d7e5408..5427af4 100644
--- a/arch/sparc/kernel/spiterrs.S
+++ b/arch/sparc/kernel/spiterrs.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	/* We need to carefully read the error status, ACK the errors,
 	 * prevent recursive traps, and pass the information on to C
 	 * code for logging.
diff --git a/arch/sparc/kernel/sstate.c b/arch/sparc/kernel/sstate.c
index 3caed40..ac8677c 100644
--- a/arch/sparc/kernel/sstate.c
+++ b/arch/sparc/kernel/sstate.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* sstate.c: System soft state support.
  *
  * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/starfire.c b/arch/sparc/kernel/starfire.c
index 167fdfd..b8cd57d 100644
--- a/arch/sparc/kernel/starfire.c
+++ b/arch/sparc/kernel/starfire.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * starfire.c: Starfire/E10000 support.
  *
diff --git a/arch/sparc/kernel/sun4d_irq.c b/arch/sparc/kernel/sun4d_irq.c
index a87d0e4..d869d40 100644
--- a/arch/sparc/kernel/sun4d_irq.c
+++ b/arch/sparc/kernel/sun4d_irq.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * SS1000/SC2000 interrupt handling.
  *
diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
index af93b50..ff30f03 100644
--- a/arch/sparc/kernel/sun4d_smp.c
+++ b/arch/sparc/kernel/sun4d_smp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Sparc SS1000/SC2000 SMP support.
  *
  * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c
index aa84da0..c01767a 100644
--- a/arch/sparc/kernel/sun4m_irq.c
+++ b/arch/sparc/kernel/sun4m_irq.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * sun4m irq support
  *
diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 5547fcb..228a652 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  sun4m SMP support.
  *
diff --git a/arch/sparc/kernel/sun4v_ivec.S b/arch/sparc/kernel/sun4v_ivec.S
index 3463199..6478ef4 100644
--- a/arch/sparc/kernel/sun4v_ivec.S
+++ b/arch/sparc/kernel/sun4v_ivec.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* sun4v_ivec.S: Sun4v interrupt vector handling.
  *
  * Copyright (C) 2006 <davem@davemloft.net>
diff --git a/arch/sparc/kernel/sun4v_tlb_miss.S b/arch/sparc/kernel/sun4v_tlb_miss.S
index c19f352..7ac9f33 100644
--- a/arch/sparc/kernel/sun4v_tlb_miss.S
+++ b/arch/sparc/kernel/sun4v_tlb_miss.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* sun4v_tlb_miss.S: Sun4v TLB miss handlers.
  *
  * Copyright (C) 2006 <davem@davemloft.net>
diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S
index f834224..7e7011a 100644
--- a/arch/sparc/kernel/sys32.S
+++ b/arch/sparc/kernel/sys32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * sys32.S: I-cache tricks for 32-bit compatibility layer simple
  *          conversions.
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c
index bca44f3..b4e1478 100644
--- a/arch/sparc/kernel/sys_sparc32.c
+++ b/arch/sparc/kernel/sys_sparc32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
  *
  * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
index 7aecb23..990703b7 100644
--- a/arch/sparc/kernel/sys_sparc_32.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* linux/arch/sparc/kernel/sys_sparc.c
  *
  * This file contains various random system calls that
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index 043544d..55416db 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* linux/arch/sparc64/kernel/sys_sparc.c
  *
  * This file contains various random system calls that
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
index c4a1b5c..c5f9ec8 100644
--- a/arch/sparc/kernel/syscalls.S
+++ b/arch/sparc/kernel/syscalls.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	/* SunOS's execv() call only specifies the argv argument, the
 	 * environment settings are the same as the calling processes.
 	 */
diff --git a/arch/sparc/kernel/sysfs.c b/arch/sparc/kernel/sysfs.c
index 5fd352b..6d60d41 100644
--- a/arch/sparc/kernel/sysfs.c
+++ b/arch/sparc/kernel/sysfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* sysfs.c: Topology sysfs support code for sparc64.
  *
  * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/systbls.h b/arch/sparc/kernel/systbls.h
index 2dab823..5a01cfe 100644
--- a/arch/sparc/kernel/systbls.h
+++ b/arch/sparc/kernel/systbls.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _SYSTBLS_H
 #define _SYSTBLS_H
 
diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
index 5253e89..731b25d 100644
--- a/arch/sparc/kernel/systbls_32.S
+++ b/arch/sparc/kernel/systbls_32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* systbls.S: System call entry point tables for OS compatibility.
  *            The native Linux system call table lives here also.
  *
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
index 82339f6..293c1cb 100644
--- a/arch/sparc/kernel/systbls_64.S
+++ b/arch/sparc/kernel/systbls_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* systbls.S: System call entry point tables for OS compatibility.
  *            The native Linux system call table lives here also.
  *
diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c
index 2ce2e7b..8a08830 100644
--- a/arch/sparc/kernel/time_32.c
+++ b/arch/sparc/kernel/time_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* linux/arch/sparc/kernel/time.c
  *
  * Copyright (C) 1995 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
index 564f0e4..3b39708 100644
--- a/arch/sparc/kernel/time_64.c
+++ b/arch/sparc/kernel/time_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* time.c: UltraSparc timer and TOD clock support.
  *
  * Copyright (C) 1997, 2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/trampoline_32.S b/arch/sparc/kernel/trampoline_32.S
index 3eed99f..82fafee 100644
--- a/arch/sparc/kernel/trampoline_32.S
+++ b/arch/sparc/kernel/trampoline_32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * trampoline.S: SMP cpu boot-up trampoline code.
  *
diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S
index 88ede1d..fe59122 100644
--- a/arch/sparc/kernel/trampoline_64.S
+++ b/arch/sparc/kernel/trampoline_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * trampoline.S: Jump start slave processors on sparc64.
  *
diff --git a/arch/sparc/kernel/traps_32.c b/arch/sparc/kernel/traps_32.c
index 581cf35..b1ed763 100644
--- a/arch/sparc/kernel/traps_32.c
+++ b/arch/sparc/kernel/traps_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sparc/kernel/traps.c
  *
diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
index f741153..eaed39c 100644
--- a/arch/sparc/kernel/tsb.S
+++ b/arch/sparc/kernel/tsb.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* tsb.S: Sparc64 TSB table handling.
  *
  * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/ttable_32.S b/arch/sparc/kernel/ttable_32.S
index 8a7a96c..e79fd78 100644
--- a/arch/sparc/kernel/ttable_32.S
+++ b/arch/sparc/kernel/ttable_32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* The Sparc trap table, bootloader gives us control at _start. */
         __HEAD
 
diff --git a/arch/sparc/kernel/ttable_64.S b/arch/sparc/kernel/ttable_64.S
index efe93ab..18685fe 100644
--- a/arch/sparc/kernel/ttable_64.S
+++ b/arch/sparc/kernel/ttable_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* ttable.S: Sparc V9 Trap Table(s) with SpitFire/Cheetah/SUN4V extensions.
  *
  * Copyright (C) 1996, 2001, 2006 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/una_asm_32.S b/arch/sparc/kernel/una_asm_32.S
index 8f096e8..f8bf839 100644
--- a/arch/sparc/kernel/una_asm_32.S
+++ b/arch/sparc/kernel/una_asm_32.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* una_asm.S: Kernel unaligned trap assembler helpers.
  *
  * Copyright (C) 1996,2005,2008 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/una_asm_64.S b/arch/sparc/kernel/una_asm_64.S
index 1c8d332..e256f39 100644
--- a/arch/sparc/kernel/una_asm_64.S
+++ b/arch/sparc/kernel/una_asm_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* una_asm.S: Kernel unaligned trap assembler helpers.
  *
  * Copyright (C) 1996,2005 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/unaligned_32.c b/arch/sparc/kernel/unaligned_32.c
index 8367dce..7642d7e 100644
--- a/arch/sparc/kernel/unaligned_32.c
+++ b/arch/sparc/kernel/unaligned_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * unaligned.c: Unaligned load/store trap handling with special
  *              cases for the kernel to do them more quickly.
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index cda7fd3..23db2ef 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * unaligned.c: Unaligned load/store trap handling with special
  *              cases for the kernel to do them more quickly.
diff --git a/arch/sparc/kernel/urtt_fill.S b/arch/sparc/kernel/urtt_fill.S
index 364af32..44183aa 100644
--- a/arch/sparc/kernel/urtt_fill.S
+++ b/arch/sparc/kernel/urtt_fill.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <asm/thread_info.h>
 #include <asm/trap_block.h>
 #include <asm/spitfire.h>
diff --git a/arch/sparc/kernel/utrap.S b/arch/sparc/kernel/utrap.S
index c731e80..7a2d9a9 100644
--- a/arch/sparc/kernel/utrap.S
+++ b/arch/sparc/kernel/utrap.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 	.globl		utrap_trap
 	.type		utrap_trap,#function
 utrap_trap:		/* %g3=handler,%g4=level */
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index da1ac3f..1a0fa10 100644
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* vio.c: Virtual I/O channel devices probing infrastructure.
  *
  *    Copyright (c) 2003-2005 IBM Corp.
diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c
index dcd278f..c858f5f3 100644
--- a/arch/sparc/kernel/viohs.c
+++ b/arch/sparc/kernel/viohs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* viohs.c: LDOM Virtual I/O handshake helper layer.
  *
  * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c
index 8f35eea..64ed80e 100644
--- a/arch/sparc/kernel/visemul.c
+++ b/arch/sparc/kernel/visemul.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* visemul.c: Emulation of VIS instructions.
  *
  * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index d78847d..5a23445 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* ld script for sparc32/sparc64 kernel */
 
 #include <asm-generic/vmlinux.lds.h>
diff --git a/arch/sparc/kernel/windows.c b/arch/sparc/kernel/windows.c
index 435a467..69a6ba6 100644
--- a/arch/sparc/kernel/windows.c
+++ b/arch/sparc/kernel/windows.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* windows.c: Routines to deal with register window management
  *            at the C-code level.
  *
diff --git a/arch/sparc/kernel/winfixup.S b/arch/sparc/kernel/winfixup.S
index 1ee173c..448acce 100644
--- a/arch/sparc/kernel/winfixup.S
+++ b/arch/sparc/kernel/winfixup.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* winfixup.S: Handle cases where user stack pointer is found to be bogus.
  *
  * Copyright (C) 1997, 2006 David S. Miller (davem@davemloft.net)
diff --git a/arch/sparc/kernel/wof.S b/arch/sparc/kernel/wof.S
index 28a7bc6..96a3a11 100644
--- a/arch/sparc/kernel/wof.S
+++ b/arch/sparc/kernel/wof.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * wof.S: Sparc window overflow handler.
  *
diff --git a/arch/sparc/kernel/wuf.S b/arch/sparc/kernel/wuf.S
index 2c21cc59..1a4ca49 100644
--- a/arch/sparc/kernel/wuf.S
+++ b/arch/sparc/kernel/wuf.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * wuf.S: Window underflow trap handler for the Sparc.
  *