linux-kernel - [PATCH] drm/amdkfd: make SPDX License expression more sound

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Date:   Thu, 16 Dec 2021 10:45:03 +0100
From:   Lukas Bulwahn <lukas.bulwahn@...il.com>
To:     Felix Kuehling <Felix.Kuehling@....com>,
        Jonathan Kim <jonathan.kim@....com>,
        Alex Deucher <alexander.deucher@....com>,
        amd-gfx@...ts.freedesktop.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-spdx@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Subject: [PATCH] drm/amdkfd: make SPDX License expression more sound

Commit b5f57384805a ("drm/amdkfd: Add sysfs bitfields and enums to uAPI")
adds include/uapi/linux/kfd_sysfs.h with the "GPL-2.0 OR MIT WITH
Linux-syscall-note" SPDX-License expression.

The command ./scripts/spdxcheck.py warns:

  include/uapi/linux/kfd_sysfs.h: 1:48 Exception not valid for license MIT: Linux-syscall-note

For a uapi header, the file under GPLv2 License must be combined with the
Linux-syscall-note, but combining the MIT License with the
Linux-syscall-note makes no sense, as the note provides an exception for
GPL-licensed code, not for permissively licensed code.

So, reorganize the SPDX expression to only combine the note with the GPL
License condition. This makes spdxcheck happy again.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...il.com>
---
I am not a lawyer and I do not intend to modify the actual licensing of
this header file. So, I really would like to have an Ack from some AMD
developer here.

Maybe also a lawyer on the linux-spdx list can check my reasoning on the
licensing with the exception note?

 include/uapi/linux/kfd_sysfs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/kfd_sysfs.h b/include/uapi/linux/kfd_sysfs.h
index e1fb78b4bf09..3e330f368917 100644
--- a/include/uapi/linux/kfd_sysfs.h
+++ b/include/uapi/linux/kfd_sysfs.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0 OR MIT WITH Linux-syscall-note */
+/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
 /*
  * Copyright 2021 Advanced Micro Devices, Inc.
  *
-- 
2.17.1