Received-SPF: pass (google.com: domain of linux-kernel+bounces-181907-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: Thomas Zimmermann <tzimmermann@suse.de>
To: arnd@arndb.de,
	chaitanya.kumar.borah@intel.com,
	suresh.kumar.kurmi@intel.com,
	jani.saarinen@intel.com,
	davem@davemloft.net,
	andreas@gaisler.com,
	tglx@linutronix.de,
	mingo@redhat.com,
	bp@alien8.de,
	dave.hansen@linux.intel.com,
	x86@kernel.org,
	hpa@zytor.com,
	rafael@kernel.org,
	hdegoede@redhat.com
Cc: linux-arch@vger.kernel.org,
	sparclinux@vger.kernel.org,
	linux-acpi@vger.kernel.org,
	intel-gfx@lists.freedesktop.org,
	linux-fbdev@vger.kernel.org,
	dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org,
	Thomas Zimmermann <tzimmermann@suse.de>
Subject: [PATCH] arch: Fix name collision with ACPI's video.o
Date: Fri, 17 May 2024 11:14:33 +0200
Message-ID: <20240517091557.25800-1-tzimmermann@suse.de>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Commit 2fd001cd3600 ("arch: Rename fbdev header and source files")
renames the video source files under arch/ such that they do not
refer to fbdev any longer. The new files named video.o conflict with
ACPI's video.ko module. Modprobing the ACPI module can then fail with
warnings about missing symbols, as shown below.

  (i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol acpi_video_unregister (err -2)
  (i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol acpi_video_register_backlight (err -2)
  (i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol __acpi_video_get_backlight_type (err -2)
  (i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol acpi_video_register (err -2)

Fix the issue by renaming the architecture's video.o to video-common.o.

Reported-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Closes: https://lore.kernel.org/intel-gfx/9dcac6e9-a3bf-4ace-bbdc-f697f767f9e0@suse.de/T/#t
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 2fd001cd3600 ("arch: Rename fbdev header and source files")
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arch@vger.kernel.org
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
---
 arch/sparc/video/Makefile                    | 2 +-
 arch/sparc/video/{video.c => video-common.c} | 0
 arch/x86/video/Makefile                      | 2 +-
 arch/x86/video/{video.c => video-common.c}   | 0
 4 files changed, 2 insertions(+), 2 deletions(-)
 rename arch/sparc/video/{video.c => video-common.c} (100%)
 rename arch/x86/video/{video.c => video-common.c} (100%)

diff --git a/arch/sparc/video/Makefile b/arch/sparc/video/Makefile
index fdf83a408d750..dcfbe7a5912c0 100644
--- a/arch/sparc/video/Makefile
+++ b/arch/sparc/video/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-obj-y	+= video.o
+obj-y	+= video-common.o
diff --git a/arch/sparc/video/video.c b/arch/sparc/video/video-common.c
similarity index 100%
rename from arch/sparc/video/video.c
rename to arch/sparc/video/video-common.c
diff --git a/arch/x86/video/Makefile b/arch/x86/video/Makefile
index fdf83a408d750..dcfbe7a5912c0 100644
--- a/arch/x86/video/Makefile
+++ b/arch/x86/video/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-obj-y	+= video.o
+obj-y	+= video-common.o
diff --git a/arch/x86/video/video.c b/arch/x86/video/video-common.c
similarity index 100%
rename from arch/x86/video/video.c
rename to arch/x86/video/video-common.c
-- 
2.45.0