Re: [PATCH 1/5] iommu/arm-smmu: Make all valid stream mappings BYPASS

kernel test robot
2020-07-15T23:21:10Z

[-- Attachment #1: Type: text/plain, Size: 2375 bytes --]

Hi Bjorn,

I love your patch! Perhaps something to improve:

[auto build test WARNING on iommu/next]
[also build test WARNING on arm-perf/for-next/perf v5.8-rc5 next-20200715]
[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/Bjorn-Andersson/iommu-arm-smmu-Support-maintaining-bootloader-mappings/20200709-130417
base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm64-randconfig-r022-20200715 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 02946de3802d3bc65bc9f2eb9b8d4969b5a7add8)
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 arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64

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

All warnings (new ones prefixed by >>):

>> drivers/iommu/arm-smmu.c:1927:5: warning: no previous prototype for function 'arm_smmu_setup_identity' [-Wmissing-prototypes]
int arm_smmu_setup_identity(struct arm_smmu_device *smmu)
^
drivers/iommu/arm-smmu.c:1927:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int arm_smmu_setup_identity(struct arm_smmu_device *smmu)
^
static
1 warning generated.

vim +/arm_smmu_setup_identity +1927 drivers/iommu/arm-smmu.c

1926
> 1927 int arm_smmu_setup_identity(struct arm_smmu_device *smmu)
1928 {
1929 int i;
1930
1931 for (i = 0; i < smmu->num_mapping_groups; i++) {
1932 if (smmu->smrs[i].valid) {
1933 smmu->s2crs[i].type = S2CR_TYPE_BYPASS;
1934 smmu->s2crs[i].privcfg = S2CR_PRIVCFG_DEFAULT;
1935 smmu->s2crs[i].cbndx = 0xff;
1936 smmu->s2crs[i].count++;
1937 }
1938 }
1939
1940 return 0;
1941 }
1942

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 35323 bytes --]