Hello, On Mon, Feb 09, 2026 at 02:30:13PM +0800, kernel test robot wrote: > kernel test robot noticed the following build errors: > > [auto build test ERROR on 0636e6205beed850d985276dc56fd73d785bea5c] > > url: > https://github.com/intel-lab-lkp/linux/commits/Uwe-Kleine-K-nig/fbdev-au1100fb-Don-t-store-device-specific-data-in-global-variables/20260209-015956 > base: 0636e6205beed850d985276dc56fd73d785bea5c > patch link: > https://lore.kernel.org/r/67b7aa0157b9cf5de111ab6b2725d207ec98aae9.1770572936.git.u.kleine-koenig%40baylibre.com > patch subject: [PATCH v3 5/6] fbdev: au1100fb: Make driver compilable on > non-mips platforms > config: csky-allmodconfig > (https://download.01.org/0day-ci/archive/20260209/[email protected]/config) > compiler: csky-linux-gcc (GCC) 15.2.0 > reproduce (this is a W=1 build): > (https://download.01.org/0day-ci/archive/20260209/[email protected]/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version > of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <[email protected]> > | Closes: > https://lore.kernel.org/oe-kbuild-all/[email protected]/ > > All errors (new ones prefixed by >>): > > csky-linux-ld: drivers/video/fbdev/au1100fb.o: in function > `au1100fb_drv_remove': > au1100fb.c:(.text+0x21c): undefined reference to `unregister_framebuffer' > >> csky-linux-ld: au1100fb.c:(.text+0x224): undefined reference to > >> `fb_dealloc_cmap' > csky-linux-ld: drivers/video/fbdev/au1100fb.o: in function > `au1100fb_fb_mmap': > au1100fb.c:(.text+0x2bc): undefined reference to `unregister_framebuffer' > csky-linux-ld: au1100fb.c:(.text+0x2c0): undefined reference to > `fb_dealloc_cmap' > csky-linux-ld: drivers/video/fbdev/au1100fb.o: in function > `au1100fb_drv_probe': > au1100fb.c:(.text+0x540): undefined reference to `fb_get_options' > >> csky-linux-ld: au1100fb.c:(.text+0x6e4): undefined reference to > >> `fb_get_options' > >> csky-linux-ld: au1100fb.c:(.text+0x7bc): undefined reference to > >> `fb_alloc_cmap' > >> csky-linux-ld: au1100fb.c:(.text+0x7d8): undefined reference to > >> `register_framebuffer' > csky-linux-ld: au1100fb.c:(.text+0x818): undefined reference to > `fb_dealloc_cmap' > csky-linux-ld: au1100fb.c:(.text+0x850): undefined reference to > `fb_alloc_cmap' > csky-linux-ld: au1100fb.c:(.text+0x860): undefined reference to > `register_framebuffer' > csky-linux-ld: au1100fb.c:(.text+0x874): undefined reference to > `fb_dealloc_cmap' > >> csky-linux-ld: drivers/video/fbdev/au1100fb.o:(.rodata+0xc): undefined > >> reference to `fb_io_read' > >> csky-linux-ld: drivers/video/fbdev/au1100fb.o:(.rodata+0x10): undefined > >> reference to `fb_io_write' > >> csky-linux-ld: drivers/video/fbdev/au1100fb.o:(.rodata+0x2c): undefined > >> reference to `cfb_fillrect' > >> csky-linux-ld: drivers/video/fbdev/au1100fb.o:(.rodata+0x30): undefined > >> reference to `cfb_copyarea' > >> csky-linux-ld: drivers/video/fbdev/au1100fb.o:(.rodata+0x34): undefined > >> reference to `cfb_imageblit'
The problem is that we have CONFIG_FB_AU1100=y but only CONFIG_FB=m in that config. I thought a bool depending on a tristate implies the latter to be =y, it seems I'm wrong and FB_AU1100 needs to depend on (FB = y). Best regards Uwe
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