Hi Rob, I love your patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [cannot apply to drm-tip/drm-tip drm-exynos/exynos-drm-next linus/master v5.15 next-20211111] [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/0day-ci/linux/commits/Rob-Clark/drm-msm-a6xx-Serialize... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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 # https://github.com/0day-ci/linux/commit/8dceed1b008b31b3a8f509b45b4417ce8... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Rob-Clark/drm-msm-a6xx-Serialize-GMU-communication/20211002-033033 git checkout 8dceed1b008b31b3a8f509b45b4417ce8b931943 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 1643 | void a6xx_gpu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp) | ^~~~~~~~~~~~~~~~~ vim +/a6xx_gpu_set_freq +1643 drivers/gpu/drm/msm/adreno/a6xx_gpu.c 1642 1644 { 1645 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 1646 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 1647 1648 mutex_lock(&a6xx_gpu->gmu.lock); 1649 a6xx_gmu_set_freq(gpu, opp); 1650 mutex_unlock(&a6xx_gpu->gmu.lock); 1651 } 1652 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org