[PATCH] libacpi: switch to SPDX

[Jan Beulich <jbeulich@xxxxxxxx>]

Commit 68823df358e8 ("acpi: Re-license ACPI builder files from GPLv2 to
LGPLv2.1") added references to a "special exception on linking described
in file LICENSE", without actually adding such a file. Quite likely
COPYING was meant instead, yet then its text matches LICENSES/LGPL-2.1
except for some explanatory text (clarifying the "only" aspect) at the
top (and formatting). Hence replace the text in all the files with SPDX
references to LGPL-2.1.

Note that dsdt_acpi_info.asl had no license text. An SPDX tag is being
added there nevertheless.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/tools/libacpi/COPYING
+++ /dev/null
@@ -1,468 +0,0 @@
-This library is licensed under LGPL v2.1 to allow its usage in LGPL-2.1
-libraries such as libxl. Note that the only valid version of the LGPL as
-far as the files in this directory (and its subdirectories) are concerned
-is _this_ particular version of the license (i.e., *only* v2.1, not v2.2
-or v3.x, unless explicitly otherwise stated.
-
-Where clause 3 is invoked in order to relicense under the GPL then
-this shall be considered to be GPL v2 only for files which have
-specified LGPL v2.1 only.
-
-                  GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 2.1, February 1999
-
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--- a/tools/libacpi/Makefile
+++ b/tools/libacpi/Makefile
@@ -1,16 +1,6 @@
+# SPDX-License-Identifier: LGPL-2.1
 #
 # Copyright (c) 2004, Intel Corporation.
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU Lesser General Public License as published
-# by the Free Software Foundation; version 2.1 only. with the special
-# exception on linking described in file LICENSE.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Lesser General Public License for more details.
-#
 
 XEN_ROOT = $(CURDIR)/../..
 include $(XEN_ROOT)/tools/Rules.mk
--- a/tools/libacpi/acpi2_0.h
+++ b/tools/libacpi/acpi2_0.h
@@ -1,15 +1,6 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * Copyright (c) 2004, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 #ifndef _ACPI_2_0_H_
 #define _ACPI_2_0_H_
--- a/tools/libacpi/build.c
+++ b/tools/libacpi/build.c
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * Copyright (c) 2004, Intel Corporation.
  * Copyright (c) 2006, Keir Fraser, XenSource Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 #include LIBACPI_STDUTILS
--- a/tools/libacpi/dsdt.asl
+++ b/tools/libacpi/dsdt.asl
@@ -1,17 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /******************************************************************************
  * DSDT for Xen with Qemu device model
  *
  * Copyright (c) 2004, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 DefinitionBlock ("DSDT.aml", "DSDT", 2, "Xen", "HVM", 0)
--- a/tools/libacpi/dsdt_acpi_info.asl
+++ b/tools/libacpi/dsdt_acpi_info.asl
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 
     Scope (\_SB)
     {
--- a/tools/libacpi/libacpi.h
+++ b/tools/libacpi/libacpi.h
@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /******************************************************************************
  * libacpi.h
  * 
  * libacpi interfaces
  * 
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- *
  * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.
  */
 
--- a/tools/libacpi/mk_dsdt.c
+++ b/tools/libacpi/mk_dsdt.c
@@ -1,14 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
- */
+/* SPDX-License-Identifier: LGPL-2.1 */
 
 #include <stdio.h>
 #include <stdarg.h>
--- a/tools/libacpi/ssdt_laptop_slate.asl
+++ b/tools/libacpi/ssdt_laptop_slate.asl
@@ -1,17 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * ssdt_conv.asl
  *
  * Copyright (c) 2017  Citrix Systems, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 /*
--- a/tools/libacpi/ssdt_pm.asl
+++ b/tools/libacpi/ssdt_pm.asl
@@ -1,18 +1,9 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * ssdt_pm.asl
  *
  * Copyright (c) 2008  Kamala Narasimhan
  * Copyright (c) 2008  Citrix Systems, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 /*
--- a/tools/libacpi/ssdt_s3.asl
+++ b/tools/libacpi/ssdt_s3.asl
@@ -1,17 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * ssdt_s3.asl
  *
  * Copyright (c) 2011  Citrix Systems, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 DefinitionBlock ("SSDT_S3.aml", "SSDT", 2, "Xen", "HVM", 0)
--- a/tools/libacpi/ssdt_s4.asl
+++ b/tools/libacpi/ssdt_s4.asl
@@ -1,17 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * ssdt_s4.asl
  *
  * Copyright (c) 2011  Citrix Systems, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 DefinitionBlock ("SSDT_S4.aml", "SSDT", 2, "Xen", "HVM", 0)
--- a/tools/libacpi/ssdt_tpm.asl
+++ b/tools/libacpi/ssdt_tpm.asl
@@ -1,17 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * ssdt_tpm.asl
  *
  * Copyright (c) 2006, IBM Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 /* SSDT for TPM TIS Interface for Xen with Qemu device model. */
--- a/tools/libacpi/static_tables.c
+++ b/tools/libacpi/static_tables.c
@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: LGPL-2.1 */
 /*
  * Copyright (c) 2004, Intel Corporation.
  * Copyright (c) 2006, Keir Fraser, XenSource Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; version 2.1 only. with the special
- * exception on linking described in file LICENSE.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Lesser General Public License for more details.
  */
 
 #include "acpi2_0.h"