Hi Suravee, I love your patch! Perhaps something to improve: [auto build test WARNING on iommu/next] [also build test WARNING on v4.15 next-20180202] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Suravee-Suthikulpanit/iommu-Fix-iommu_unmap-and-iommu_unmap_fast-return-type/20180203-015316 base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> drivers/iommu/qcom_iommu.c:592:27: sparse: incorrect type in initializer (different signedness) @@ expected long ( )( ... ) @@ got unsigned long ( )( ... ) @@ drivers/iommu/qcom_iommu.c:592:27: expected long ( )( ... ) drivers/iommu/qcom_iommu.c:592:27: got unsigned long ( )( ... ) drivers/iommu/qcom_iommu.c:592:12: error: initialization from incompatible pointer type .unmap = qcom_iommu_unmap, ^~~~~~~~~~~~~~~~ drivers/iommu/qcom_iommu.c:592:12: note: (near initialization for 'qcom_iommu_ops.unmap') cc1: some warnings being treated as errors vim +592 drivers/iommu/qcom_iommu.c 0ae349a0f3 Rob Clark 2017-08-09 584 0ae349a0f3 Rob Clark 2017-08-09 585 static const struct iommu_ops qcom_iommu_ops = { 0ae349a0f3 Rob Clark 2017-08-09 586 .capable = qcom_iommu_capable, 0ae349a0f3 Rob Clark 2017-08-09 587 .domain_alloc = qcom_iommu_domain_alloc, 0ae349a0f3 Rob Clark 2017-08-09 588 .domain_free = qcom_iommu_domain_free, 0ae349a0f3 Rob Clark 2017-08-09 589 .attach_dev = qcom_iommu_attach_dev, 0ae349a0f3 Rob Clark 2017-08-09 590 .detach_dev = qcom_iommu_detach_dev, 0ae349a0f3 Rob Clark 2017-08-09 591 .map = qcom_iommu_map, 0ae349a0f3 Rob Clark 2017-08-09 @592 .unmap = qcom_iommu_unmap, 0ae349a0f3 Rob Clark 2017-08-09 593 .map_sg = default_iommu_map_sg, 4d689b6194 Robin Murphy 2017-09-28 594 .flush_iotlb_all = qcom_iommu_iotlb_sync, 4d689b6194 Robin Murphy 2017-09-28 595 .iotlb_sync = qcom_iommu_iotlb_sync, 0ae349a0f3 Rob Clark 2017-08-09 596 .iova_to_phys = qcom_iommu_iova_to_phys, 0ae349a0f3 Rob Clark 2017-08-09 597 .add_device = qcom_iommu_add_device, 0ae349a0f3 Rob Clark 2017-08-09 598 .remove_device = qcom_iommu_remove_device, 0ae349a0f3 Rob Clark 2017-08-09 599 .device_group = generic_device_group, 0ae349a0f3 Rob Clark 2017-08-09 600 .of_xlate = qcom_iommu_of_xlate, 0ae349a0f3 Rob Clark 2017-08-09 601 .pgsize_bitmap = SZ_4K | SZ_64K | SZ_1M | SZ_16M, 0ae349a0f3 Rob Clark 2017-08-09 602 }; 0ae349a0f3 Rob Clark 2017-08-09 603 :::::: The code at line 592 was first introduced by commit :::::: 0ae349a0f33fb040a2bc228fdc6d60111455feab iommu/qcom: Add qcom_iommu :::::: TO: Rob Clark <robdclark@xxxxxxxxx> :::::: CC: Joerg Roedel <jroedel@xxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
