Hi Chunyan, I love your patch! Yet something to improve: [auto build test ERROR on robh/for-next] [also build test ERROR on v5.11-rc4 next-20210121] [cannot apply to iommu/next] [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/Chunyan-Zhang/Add-Unisoc-iommu-basic-driver/20210121-194023 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 9.3.0 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/891db11d7229149235a02e5bc31a61188243a5d7 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chunyan-Zhang/Add-Unisoc-iommu-basic-driver/20210121-194023 git checkout 891db11d7229149235a02e5bc31a61188243a5d7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/iommu/sprd-iommu.c: In function 'sprd_iommu_attach_device': >> drivers/iommu/sprd-iommu.c:248:16: error: implicit declaration of function 'dma_alloc_coherent' [-Werror=implicit-function-declaration] 248 | dom->pgt_va = dma_alloc_coherent(sdev->dev, pgt_size, &dom->pgt_pa, GFP_KERNEL); | ^~~~~~~~~~~~~~~~~~ drivers/iommu/sprd-iommu.c:248:14: warning: assignment to 'u32 *' {aka 'unsigned int *'} from 'int' makes pointer from integer without a cast [-Wint-conversion] 248 | dom->pgt_va = dma_alloc_coherent(sdev->dev, pgt_size, &dom->pgt_pa, GFP_KERNEL); | ^ drivers/iommu/sprd-iommu.c: In function 'sprd_iommu_detach_device': >> drivers/iommu/sprd-iommu.c:270:2: error: implicit declaration of function 'dma_free_coherent' [-Werror=implicit-function-declaration] 270 | dma_free_coherent(sdev->dev, pgt_size, dom->pgt_va, dom->pgt_pa); | ^~~~~~~~~~~~~~~~~ In file included from include/linux/device.h:15, from drivers/iommu/sprd-iommu.c:10: drivers/iommu/sprd-iommu.c: In function 'sprd_iommu_map': drivers/iommu/sprd-iommu.c:296:27: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'} [-Wformat=] 296 | dev_err(dom->sdev->dev, "(iova(0x%lx) + sixe(0x%lx)) are not in the range!\n", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dev_printk.h:19:22: note: in definition of macro 'dev_fmt' 19 | #define dev_fmt(fmt) fmt | ^~~ drivers/iommu/sprd-iommu.c:296:3: note: in expansion of macro 'dev_err' 296 | dev_err(dom->sdev->dev, "(iova(0x%lx) + sixe(0x%lx)) are not in the range!\n", | ^~~~~~~ drivers/iommu/sprd-iommu.c:296:52: note: format string is defined here 296 | dev_err(dom->sdev->dev, "(iova(0x%lx) + sixe(0x%lx)) are not in the range!\n", | ~~^ | | | long unsigned int | %x drivers/iommu/sprd-iommu.c:279:38: warning: variable 'mdata' set but not used [-Wunused-but-set-variable] 279 | const struct sprd_iommu_match_data *mdata; | ^~~~~ drivers/iommu/sprd-iommu.c: In function 'sprd_iommu_probe': drivers/iommu/sprd-iommu.c:483:21: warning: assignment to 'u32 *' {aka 'unsigned int *'} from 'int' makes pointer from integer without a cast [-Wint-conversion] 483 | sdev->prot_page_va = dma_alloc_coherent(dev, SPRD_IOMMU_PAGE_SIZE, | ^ cc1: some warnings being treated as errors vim +/dma_alloc_coherent +248 drivers/iommu/sprd-iommu.c 240 241 static int sprd_iommu_attach_device(struct iommu_domain *domain, 242 struct device *dev) 243 { 244 struct sprd_iommu_device *sdev = dev_iommu_priv_get(dev); 245 struct sprd_iommu_domain *dom = to_sprd_domain(domain); 246 size_t pgt_size = sprd_iommu_pgt_size(domain); 247 > 248 dom->pgt_va = dma_alloc_coherent(sdev->dev, pgt_size, &dom->pgt_pa, GFP_KERNEL); 249 if (!dom->pgt_va) 250 return -ENOMEM; 251 252 dom->sdev = sdev; 253 254 sprd_iommu_first_ppn(dom); 255 sprd_iommu_first_vpn(dom); 256 sprd_iommu_vpn_range(dom); 257 sprd_iommu_default_ppn(sdev); 258 sprd_iommu_hw_en(sdev, true); 259 260 return 0; 261 } 262 263 static void sprd_iommu_detach_device(struct iommu_domain *domain, 264 struct device *dev) 265 { 266 struct sprd_iommu_domain *dom = to_sprd_domain(domain); 267 struct sprd_iommu_device *sdev = dom->sdev; 268 size_t pgt_size = sprd_iommu_pgt_size(domain); 269 > 270 dma_free_coherent(sdev->dev, pgt_size, dom->pgt_va, dom->pgt_pa); 271 sprd_iommu_hw_en(sdev, false); 272 dom->sdev = NULL; 273 } 274 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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