Hi AngeloGioacchino, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on tip/timers/core] [also build test WARNING on robh/for-next v5.18-rc6 next-20220509] [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] url: https://github.com/intel-lab-lkp/linux/commits/AngeloGioacchino-Del-Regno/MediaTek-SoC-ARM-ARM64-System-Timer/20220509-182806 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git f4b62e1e1137507268c2c63dc4e6da279dc58e9f config: mips-randconfig-r015-20220509 (https://download.01.org/0day-ci/archive/20220510/202205100325.mvo9fxmN-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a385645b470e2d3a1534aae618ea56b31177639f) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/cd08992dd0c0e2c02229be62ecb2a51da4c1d315 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review AngeloGioacchino-Del-Regno/MediaTek-SoC-ARM-ARM64-System-Timer/20220509-182806 git checkout cd08992dd0c0e2c02229be62ecb2a51da4c1d315 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/clocksource/ drivers/gpu/drm/mgag200/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/clocksource/timer-mediatek.c:103:6: warning: variable 'val' set but not used [-Wunused-but-set-variable] u32 val; ^ 1 warning generated. vim +/val +103 drivers/clocksource/timer-mediatek.c 99 100 static void mtk_cpux_disable_irq(struct timer_of *to) 101 { 102 const unsigned long *irq_mask = cpumask_bits(cpu_possible_mask); > 103 u32 val; 104 105 val = mtk_cpux_readl(CPUX_IDX_GLOBAL_IRQ, to); 106 val &= ~(*irq_mask); 107 } 108 -- 0-DAY CI Kernel Test Service https://01.org/lkp