Hi Eric, I love your patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm-tip/drm-tip linus/master v5.8-rc3 next-20200703] [cannot apply to drm/drm-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Eric-Anholt/drm-msm-Garbage-collect-unused-resource-_len-fields/20200630-022449 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: arm64-randconfig-r031-20200703 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project ca464639a1c9dd3944eb055ffd2796e8c2e7639f) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 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/gpu/drm/msm/msm_drv.c:123:15: warning: no previous prototype for function '_msm_ioremap' [-Wmissing-prototypes] void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name, ^ drivers/gpu/drm/msm/msm_drv.c:123:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name, ^ static 1 warning generated. vim +/_msm_ioremap +123 drivers/gpu/drm/msm/msm_drv.c 122 > 123 void __iomem *_msm_ioremap(struct platform_device *pdev, const char *name, 124 const char *dbgname, bool quiet) 125 { 126 struct resource *res; 127 unsigned long size; 128 void __iomem *ptr; 129 130 if (name) 131 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); 132 else 133 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 134 135 if (!res) { 136 if (!quiet) 137 DRM_DEV_ERROR(&pdev->dev, "failed to get memory resource: %s\n", name); 138 return ERR_PTR(-EINVAL); 139 } 140 141 size = resource_size(res); 142 143 ptr = devm_ioremap(&pdev->dev, res->start, size); 144 if (!ptr) { 145 if (!quiet) 146 DRM_DEV_ERROR(&pdev->dev, "failed to ioremap: %s\n", name); 147 return ERR_PTR(-ENOMEM); 148 } 149 150 if (reglog) 151 printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size); 152 153 return ptr; 154 } 155 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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