Hi Shameer,

I love your patch! Yet something to improve:

[auto build test ERROR on pm/linux-next]
[also build test ERROR on arm/for-next soc/for-next arm64/for-next/core linus/master v5.12-rc8]
[cannot apply to iommu/next xlnx/master next-20210420]
[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/Shameer-Kolothum/ACPI-IORT-Support-for-IORT-RMR-node/20210420-173125
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
config: arm-randconfig-r023-20210420 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project ca8eef7e3da8f750d7c7aa004fe426d1d34787ea)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/0day-ci/linux/commit/ea2019c2969e4e8f6ec2b0dc2d492f0d05f36cd9
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Shameer-Kolothum/ACPI-IORT-Support-for-IORT-RMR-node/20210420-173125
        git checkout ea2019c2969e4e8f6ec2b0dc2d492f0d05f36cd9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from drivers/iommu/arm/arm-smmu/arm-smmu.c:24:
   include/linux/dma-iommu.h:94:71: warning: declaration of 'struct iommu_rmr' will not be visible outside of this function [-Wvisibility]
   static void iommu_dma_get_rmr_resv_regions(struct device *dev, struct iommu_rmr *rmr,
                                                                         ^
   include/linux/dma-iommu.h:100:1: error: expected identifier or '('
   {
   ^
>> drivers/iommu/arm/arm-smmu/arm-smmu.c:1622:39: error: incompatible pointer types passing 'struct iommu_rmr *' to parameter of type 'struct iommu_rmr *' [-Werror,-Wincompatible-pointer-types]
                   iommu_dma_get_rmr_resv_regions(dev, rmr, head);
                                                       ^~~
   include/linux/dma-iommu.h:94:82: note: passing argument to parameter 'rmr' here
   static void iommu_dma_get_rmr_resv_regions(struct device *dev, struct iommu_rmr *rmr,
                                                                                    ^
   1 warning and 2 errors generated.


vim +1622 drivers/iommu/arm/arm-smmu/arm-smmu.c

  1609	
  1610	static void arm_smmu_rmr_get_resv_regions(struct device *dev,
  1611						  struct list_head *head)
  1612	{
  1613		struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev);
  1614		struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
  1615		struct arm_smmu_device *smmu = cfg->smmu;
  1616		struct iommu_rmr *rmr;
  1617	
  1618		list_for_each_entry(rmr, &smmu->rmr_list, list) {
  1619			if (!arm_smmu_dev_has_rmr(cfg, fwspec, rmr))
  1620				continue;
  1621	
> 1622			iommu_dma_get_rmr_resv_regions(dev, rmr, head);
  1623		}
  1624	}
  1625	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org