When DRM_SIMPLEDRM=m, all of FB_CFB_{FILLRECT,COPYAREA,IMAGEBLIT} are =m,
causing undefined references in fbdev/simplefb.o.
By restricting FB_SIMPLEFB to be set only when DRM_SIMPLEDRM is not set,
the FB_CFB_* symbols are =y and the build completes without these
undefined references.
IOW, really "disable simplefb if simpledrm has been selected".
or1k-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x2c): undefined reference to `cfb_fillrect'
or1k-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x30): undefined reference to `cfb_copyarea'
or1k-linux-ld: drivers/video/fbdev/simplefb.o:(.rodata+0x34): undefined reference to `cfb_imageblit'
Fixes: 11e8f5fd223b ("drm: Add simpledrm driver")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Cc: linux-fbdev@xxxxxxxxxxxxxxx
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/video/fbdev/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-next-20210716.orig/drivers/video/fbdev/Kconfig
+++ linux-next-20210716/drivers/video/fbdev/Kconfig
@@ -2192,7 +2192,7 @@ config FB_HYPERV
config FB_SIMPLE
bool "Simple framebuffer support"
- depends on (FB = y) && !DRM_SIMPLEDRM
+ depends on (FB = y) && DRM_SIMPLEDRM=n
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT
