Hi Krishna, url: https://github.com/0day-ci/linux/commits/Krishna-Reddy/Nvidia-Arm-SMMUv2-... base: 365f8d504da50feaebf826d180113529c9383670 config: i386-allyesconfig (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty # save the attached .config to linux build tree make C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) # https://github.com/0day-ci/linux/commit/74ddf19a83203af9193b1921e43fdc6dc... git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 74ddf19a83203af9193b1921e43fdc6dc68c8379 vim +151 drivers/iommu/arm-smmu-nvidia.c 74ddf19a83203a Krishna Reddy 2020-05-21 128 74ddf19a83203a Krishna Reddy 2020-05-21 129 struct arm_smmu_device *nvidia_smmu_impl_init(struct arm_smmu_device *smmu) 74ddf19a83203a Krishna Reddy 2020-05-21 130 { 74ddf19a83203a Krishna Reddy 2020-05-21 131 unsigned int i; 74ddf19a83203a Krishna Reddy 2020-05-21 132 struct nvidia_smmu *nsmmu; 74ddf19a83203a Krishna Reddy 2020-05-21 133 struct resource *res; 74ddf19a83203a Krishna Reddy 2020-05-21 134 struct device *dev = smmu->dev; 74ddf19a83203a Krishna Reddy 2020-05-21 135 struct platform_device *pdev = to_platform_device(smmu->dev); 74ddf19a83203a Krishna Reddy 2020-05-21 136 74ddf19a83203a Krishna Reddy 2020-05-21 137 nsmmu = devm_kzalloc(smmu->dev, sizeof(*nsmmu), GFP_KERNEL); 74ddf19a83203a Krishna Reddy 2020-05-21 138 if (!nsmmu) 74ddf19a83203a Krishna Reddy 2020-05-21 139 return ERR_PTR(-ENOMEM); 74ddf19a83203a Krishna Reddy 2020-05-21 140 74ddf19a83203a Krishna Reddy 2020-05-21 141 nsmmu->smmu = *smmu; 74ddf19a83203a Krishna Reddy 2020-05-21 142 /* Instance 0 is ioremapped by arm-smmu.c */ 74ddf19a83203a Krishna Reddy 2020-05-21 143 nsmmu->num_inst = 1; 74ddf19a83203a Krishna Reddy 2020-05-21 144 74ddf19a83203a Krishna Reddy 2020-05-21 145 for (i = 1; i < MAX_SMMU_INSTANCES; i++) { 74ddf19a83203a Krishna Reddy 2020-05-21 146 res = platform_get_resource(pdev, IORESOURCE_MEM, i); 74ddf19a83203a Krishna Reddy 2020-05-21 147 if (!res) 74ddf19a83203a Krishna Reddy 2020-05-21 148 break; 74ddf19a83203a Krishna Reddy 2020-05-21 149 nsmmu->bases[i] = devm_ioremap_resource(dev, res); 74ddf19a83203a Krishna Reddy 2020-05-21 150 if (IS_ERR(nsmmu->bases[i])) 74ddf19a83203a Krishna Reddy 2020-05-21 @151 return (struct arm_smmu_device *)nsmmu->bases[i]; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This should be "return ERR_CAST(nsmmu->bases[i]);" regards, dan carepenter --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org _______________________________________________ kbuild mailing list -- kbuild(a)lists.01.org To unsubscribe send an email to kbuild-leave(a)lists.01.org