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SubjectRe: [PATCH 1/2] iommu: Fix iommu_unmap and iommu_unmap_fast return type
Hi Suravee,

I love your patch! Yet something to improve:

[auto build test ERROR on iommu/next]
[also build test ERROR 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
config: s390-allyesconfig (attached as .config)
compiler: s390x-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=s390

All errors (new ones prefixed by >>):

>> drivers//iommu/s390-iommu.c:373:11: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.unmap = s390_iommu_unmap,
^~~~~~~~~~~~~~~~
drivers//iommu/s390-iommu.c:373:11: note: (near initialization for 's390_iommu_ops.unmap')
cc1: some warnings being treated as errors

vim +373 drivers//iommu/s390-iommu.c

f42c22351 Joerg Roedel 2017-04-27 365
cceb84519 Arvind Yadav 2017-08-28 366 static const struct iommu_ops s390_iommu_ops = {
8128f23c4 Gerald Schaefer 2015-08-27 367 .capable = s390_iommu_capable,
8128f23c4 Gerald Schaefer 2015-08-27 368 .domain_alloc = s390_domain_alloc,
8128f23c4 Gerald Schaefer 2015-08-27 369 .domain_free = s390_domain_free,
8128f23c4 Gerald Schaefer 2015-08-27 370 .attach_dev = s390_iommu_attach_device,
8128f23c4 Gerald Schaefer 2015-08-27 371 .detach_dev = s390_iommu_detach_device,
8128f23c4 Gerald Schaefer 2015-08-27 372 .map = s390_iommu_map,
8128f23c4 Gerald Schaefer 2015-08-27 @373 .unmap = s390_iommu_unmap,
8128f23c4 Gerald Schaefer 2015-08-27 374 .iova_to_phys = s390_iommu_iova_to_phys,
8128f23c4 Gerald Schaefer 2015-08-27 375 .add_device = s390_iommu_add_device,
8128f23c4 Gerald Schaefer 2015-08-27 376 .remove_device = s390_iommu_remove_device,
0929deca4 Joerg Roedel 2017-06-15 377 .device_group = generic_device_group,
8128f23c4 Gerald Schaefer 2015-08-27 378 .pgsize_bitmap = S390_IOMMU_PGSIZES,
8128f23c4 Gerald Schaefer 2015-08-27 379 };
8128f23c4 Gerald Schaefer 2015-08-27 380

:::::: The code at line 373 was first introduced by commit
:::::: 8128f23c436d0dd4f72412e1bf9256e424479dc3 iommu/s390: Add iommu api for s390 pci devices

:::::: TO: Gerald Schaefer <gerald.schaefer@de.ibm.com>
:::::: CC: Joerg Roedel <jroedel@suse.de>

---
0-DAY kernel test infrastructure Open Source Technology Center
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