Hi Daniel, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.2-rc1 next-20190520] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Daniel-Vetter/fbcon-notifier-begone/20190521-021841 config: x86_64-randconfig-x003-201920 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): drivers/video/fbdev/savage/savagefb_driver.c: In function 'savagefb_remove': >> drivers/video/fbdev/savage/savagefb_driver.c:2341:7: error: void value not ignored as it ought to be if (unregister_framebuffer(info)) ^~~~~~~~~~~~~~~~~~~~~~ vim +2341 drivers/video/fbdev/savage/savagefb_driver.c ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2328 48c68c4f drivers/video/savage/savagefb_driver.c Greg Kroah-Hartman 2012-12-21 2329 static void savagefb_remove(struct pci_dev *dev) ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2330 { b8901b09 drivers/video/savage/savagefb_driver.c Antonino A. Daplas 2006-01-09 2331 struct fb_info *info = pci_get_drvdata(dev); ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2332 ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2333 DBG("savagefb_remove"); ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2334 ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2335 if (info) { ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2336 /* ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2337 * If unregister_framebuffer fails, then ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2338 * we will be leaving hooks that could cause ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2339 * oopsen laying around. ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2340 */ ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 @2341 if (unregister_framebuffer(info)) ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2342 printk(KERN_WARNING "savagefb: danger danger! " ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2343 "Oopsen imminent!\n"); ^1da177e drivers/video/savage/savagefb_driver.c Linus Torvalds 2005-04-16 2344 :::::: The code at line 2341 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds :::::: CC: Linus Torvalds --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation