Hi Uwe, kernel test robot noticed the following build warnings:
[auto build test WARNING on 0636e6205beed850d985276dc56fd73d785bea5c] url: https://github.com/intel-lab-lkp/linux/commits/Uwe-Kleine-K-nig/fbdev-au1100fb-Mark-several-local-functions-as-static/20260204-171704 base: 0636e6205beed850d985276dc56fd73d785bea5c patch link: https://lore.kernel.org/r/474eca0c9ecb8a2e610e82922ad22ad7e8ff0b8b.1770196161.git.u.kleine-koenig%40baylibre.com patch subject: [PATCH v1 2/3] fbdev: au1100fb: Make driver compilable on non-mips platforms config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20260204/[email protected]/config) compiler: s390-linux-gcc (GCC) 15.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260204/[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 warnings (new ones prefixed by >>): drivers/video/fbdev/au1100fb.c: In function 'au1100fb_fb_mmap': drivers/video/fbdev/au1100fb.c:354:39: error: lvalue required as left operand of assignment 354 | pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6 | ^~ In file included from include/asm-generic/bug.h:31, from arch/s390/include/asm/bug.h:60, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from arch/s390/include/asm/cmpxchg.h:11, from arch/s390/include/asm/atomic.h:16, from include/linux/atomic.h:7, from include/asm-generic/bitops/atomic.h:5, from arch/s390/include/asm/bitops.h:75, from include/linux/bitops.h:67, from include/linux/kernel.h:23, from include/linux/clk.h:13, from drivers/video/fbdev/au1100fb.c:44: drivers/video/fbdev/au1100fb.c: In function 'au1100fb_drv_probe': >> include/linux/kern_levels.h:5:25: warning: format '%d' expects argument of >> type 'int', but argument 2 has type 'size_t' {aka 'long unsigned int'} >> [-Wformat=] 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/printk.h:484:25: note: in definition of macro 'printk_index_wrap' 484 | _p_func(_fmt, ##__VA_ARGS__); \ | ^~~~ drivers/video/fbdev/au1100fb.h:33:30: note: in expansion of macro 'printk' 33 | #define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg) | ^~~~~~ include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH' 11 | #define KERN_ERR KERN_SOH "3" /* error conditions */ | ^~~~~~~~ drivers/video/fbdev/au1100fb.h:33:37: note: in expansion of macro 'KERN_ERR' 33 | #define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg) | ^~~~~~~~ drivers/video/fbdev/au1100fb.c:472:17: note: in expansion of macro 'print_err' 472 | print_err("fail to allocate framebuffer (size: %dK))", | ^~~~~~~~~ vim +5 include/linux/kern_levels.h 314ba3520e513a Joe Perches 2012-07-30 4 04d2c8c83d0e3a Joe Perches 2012-07-30 @5 #define KERN_SOH "\001" /* ASCII Start Of Header */ 04d2c8c83d0e3a Joe Perches 2012-07-30 6 #define KERN_SOH_ASCII '\001' 04d2c8c83d0e3a Joe Perches 2012-07-30 7 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
