Hi Thomas, kernel test robot noticed the following build errors: [auto build test ERROR on lee-backlight/for-backlight-next] [also build test ERROR on lee-leds/for-leds-next linus/master lee-backlight/for-backlight-fixes v6.14-rc4] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Thomas-Zimmermann/fbdev-Rework-fb_blank/20250226-174013 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight.git for-backlight-next patch link: https://lore.kernel.org/r/20250226093456.147402-7-tzimmermann%40suse.de patch subject: [PATCH v2 06/11] backlight: Replace fb events with a dedicated function call config: arc-randconfig-002-20250227 (https://download.01.org/0day-ci/archive/20250227/202502271951.iaH6W6q1-lkp@xxxxxxxxx/config) compiler: arc-elf-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250227/202502271951.iaH6W6q1-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202502271951.iaH6W6q1-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): In file included from drivers/video/cmdline.c:19: >> include/linux/fb.h:767:6: warning: no previous prototype for 'fb_bl_notify_blank' [-Wmissing-prototypes] 767 | void fb_bl_notify_blank(struct fb_info *info, int old_blank) | ^~~~~~~~~~~~~~~~~~ -- arc-elf-ld: drivers/video/cmdline.o: in function `fb_bl_notify_blank': >> cmdline.c:(.text+0x9c): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/adp8860_bl.o: in function `fb_bl_notify_blank': adp8860_bl.c:(.text+0xefc): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/as3711_bl.o: in function `fb_bl_notify_blank': as3711_bl.c:(.text+0x85c): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/backlight.o: in function `fb_bl_notify_blank': backlight.c:(.text+0xa34): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/da9052_bl.o: in function `fb_bl_notify_blank': da9052_bl.c:(.text+0x20c): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/ktd253-backlight.o: in function `fb_bl_notify_blank': ktd253-backlight.c:(.text+0x36c): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/lv5207lp.o: in function `fb_bl_notify_blank': lv5207lp.c:(.text+0x224): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/max8925_bl.o: in function `fb_bl_notify_blank': max8925_bl.c:(.text+0x3c8): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/mp3309c.o: in function `fb_bl_notify_blank': mp3309c.c:(.text+0x730): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/pandora_bl.o: in function `fb_bl_notify_blank': pandora_bl.c:(.text+0x294): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/pwm_bl.o: in function `fb_bl_notify_blank': pwm_bl.c:(.text+0xd08): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/video/backlight/qcom-wled.o: in function `fb_bl_notify_blank': qcom-wled.c:(.text+0x1f34): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/regulator/rpi-panel-attiny-regulator.o: in function `fb_bl_notify_blank': rpi-panel-attiny-regulator.c:(.text+0x5f4): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/drm_edid.o: in function `fb_bl_notify_blank': include/linux/fb.h:768: multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/drm_file.o: in function `fb_bl_notify_blank': include/linux/fb.h:768: multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/drm_modes.o: in function `fb_bl_notify_blank': include/linux/fb.h:768: multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/drm_panel.o: in function `fb_bl_notify_blank': include/linux/fb.h:768: multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/display/drm_dp_helper.o: in function `fb_bl_notify_blank': include/linux/fb.h:768: multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.o: in function `fb_bl_notify_blank': panel-asus-z00t-tm5p5-n35596.c:(.text+0x654): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-jdi-lpm102a188a.o: in function `fb_bl_notify_blank': panel-jdi-lpm102a188a.c:(.text+0x9c4): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-lg-sw43408.o: in function `fb_bl_notify_blank': panel-lg-sw43408.c:(.text+0x4ec): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-novatek-nt35560.o: in function `fb_bl_notify_blank': panel-novatek-nt35560.c:(.text+0x784): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-raydium-rm69380.o: in function `fb_bl_notify_blank': panel-raydium-rm69380.c:(.text+0x59c): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-samsung-s6d7aa0.o: in function `fb_bl_notify_blank': panel-samsung-s6d7aa0.c:(.text+0x92c): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-samsung-sofef00.o: in function `fb_bl_notify_blank': panel-samsung-sofef00.c:(.text+0x4f8): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-sony-tulip-truly-nt35521.o: in function `fb_bl_notify_blank': panel-sony-tulip-truly-nt35521.c:(.text+0xf38): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-truly-nt35597.o: in function `fb_bl_notify_blank': panel-truly-nt35597.c:(.text+0x7c8): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/panel/panel-visionox-r66451.o: in function `fb_bl_notify_blank': panel-visionox-r66451.c:(.text+0x704): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/gpu/drm/bridge/parade-ps8622.o: in function `fb_bl_notify_blank': parade-ps8622.c:(.text+0x7e0): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/hid/hid-picolcd_core.o: in function `fb_bl_notify_blank': hid-picolcd_core.c:(.text+0xca4): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/hid/hid-picolcd_backlight.o: in function `fb_bl_notify_blank': include/linux/fb.h:768: multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/hid/hid-picolcd_debugfs.o: in function `fb_bl_notify_blank': include/linux/fb.h:768: multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here arc-elf-ld: drivers/of/platform.o: in function `fb_bl_notify_blank': platform.c:(.text+0xb10): multiple definition of `fb_bl_notify_blank'; drivers/video/aperture.o:include/linux/fb.h:768: first defined here -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
