[PATCH v2] sparc: Fix undefined reference to fb_is_primary_device

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Commit 55bffc8170bb ("fbdev: Split frame buffer support in FB and FB_CORE
symbols") added a new FB_CORE Kconfig symbol, that can be enabled to only
have fbcon/VT and DRM fbdev emulation, but without support for any legacy
fbdev driver.

Unfortunately, it missed to change the CONFIG_FB in arch/sparc makefiles,
which leads to the following linking error in some sparc64 configurations:

   sparc64-linux-ld: drivers/video/fbdev/core/fbcon.o: in function `fbcon_fb_registered':
>> fbcon.c:(.text+0x4f60): undefined reference to `fb_is_primary_device'

Fixes: 55bffc8170bb ("fbdev: Split frame buffer support in FB and FB_CORE symbols")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/r/202401290306.IV8rhJ02-lkp@xxxxxxxxx/
Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
---

I don't have a sparc64 toolchain to test this patch, but I'm pretty sure
that this is the correct fix for the linking error reported by the robot.

Changes in v2:
- Add collected tags.
- Also fix arch/sparc/Makefile (Thomas Zimmermann).

 arch/sparc/Makefile       | 2 +-
 arch/sparc/video/Makefile | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index 5f6035936131..2a03daa68f28 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -60,7 +60,7 @@ libs-y                 += arch/sparc/prom/
 libs-y                 += arch/sparc/lib/
 
 drivers-$(CONFIG_PM) += arch/sparc/power/
-drivers-$(CONFIG_FB) += arch/sparc/video/
+drivers-$(CONFIG_FB_CORE) += arch/sparc/video/
 
 boot := arch/sparc/boot
 
diff --git a/arch/sparc/video/Makefile b/arch/sparc/video/Makefile
index 6baddbd58e4d..d4d83f1702c6 100644
--- a/arch/sparc/video/Makefile
+++ b/arch/sparc/video/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-obj-$(CONFIG_FB) += fbdev.o
+obj-$(CONFIG_FB_CORE) += fbdev.o
-- 
2.43.0





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