[android-common:android-5.4 15/19] drivers/iommu/arm-smmu-v3.c:816:24: sparse: sparse: incorrect type in assignment (different base types)

[android-common:android-5.4 15/19] drivers/iommu/arm-smmu-v3.c:816:24: sparse: sparse: incorrect type in assignment (different base types)

[kernel test robot]

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Hi Will,

First bad commit (maybe != root cause):

tree:   https://android.googlesource.com/kernel/common android-5.4
head:   adcba6dd6d36e490e4477a9cf4f1c251c16dbbda
commit: 6d83d361e7522c5021961bd8826798a74f943aa0 [15/19] FROMLIST: iommu/arm-smmu-v3: Allow building as a module
config: arm64-randconfig-s032-20210119 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-208-g46a52ca4-dirty
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android-5.4
        git checkout 6d83d361e7522c5021961bd8826798a74f943aa0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 

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


"sparse warnings: (new ones prefixed by >>)"
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
   drivers/iommu/arm-smmu-v3.c:816:26: sparse: sparse: cast to restricted __le64
>> drivers/iommu/arm-smmu-v3.c:816:24: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le64 [usertype] @@     got unsigned long long @@
   drivers/iommu/arm-smmu-v3.c:816:24: sparse:     expected restricted __le64 [usertype]
   drivers/iommu/arm-smmu-v3.c:816:24: sparse:     got unsigned long long
   drivers/iommu/arm-smmu-v3.c:824:20: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le64 [usertype] *[assigned] dst @@     got unsigned long long [usertype] *ent @@
   drivers/iommu/arm-smmu-v3.c:824:20: sparse:     expected restricted __le64 [usertype] *[assigned] dst
   drivers/iommu/arm-smmu-v3.c:824:20: sparse:     got unsigned long long [usertype] *ent
   drivers/iommu/arm-smmu-v3.c:824:25: sparse: sparse: incorrect type in argument 2 (different base types) @@     expected unsigned long long [usertype] *[assigned] src @@     got restricted __le64 [usertype] * @@
   drivers/iommu/arm-smmu-v3.c:824:25: sparse:     expected unsigned long long [usertype] *[assigned] src
   drivers/iommu/arm-smmu-v3.c:824:25: sparse:     got restricted __le64 [usertype] *
   drivers/iommu/arm-smmu-v3.c:974:20: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le64 [usertype] *[assigned] dst @@     got unsigned long long * @@
   drivers/iommu/arm-smmu-v3.c:974:20: sparse:     expected restricted __le64 [usertype] *[assigned] dst
   drivers/iommu/arm-smmu-v3.c:974:20: sparse:     got unsigned long long *
   drivers/iommu/arm-smmu-v3.c:974:25: sparse: sparse: incorrect type in argument 2 (different base types) @@     expected unsigned long long [usertype] *[assigned] src @@     got restricted __le64 [usertype] * @@
   drivers/iommu/arm-smmu-v3.c:974:25: sparse:     expected unsigned long long [usertype] *[assigned] src
   drivers/iommu/arm-smmu-v3.c:974:25: sparse:     got restricted __le64 [usertype] *
   drivers/iommu/arm-smmu-v3.c:1653:53: sparse: sparse: incorrect type in argument 3 (different base types) @@     expected restricted __le64 [usertype] *dst @@     got unsigned long long [usertype] *strtab @@
   drivers/iommu/arm-smmu-v3.c:1653:53: sparse:     expected restricted __le64 [usertype] *dst
   drivers/iommu/arm-smmu-v3.c:1653:53: sparse:     got unsigned long long [usertype] *strtab
   drivers/iommu/arm-smmu-v3.c:1681:39: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] *[assigned] strtab @@     got restricted __le64 [usertype] *l2ptr @@
   drivers/iommu/arm-smmu-v3.c:1681:39: sparse:     expected unsigned long long [usertype] *[assigned] strtab
   drivers/iommu/arm-smmu-v3.c:1681:39: sparse:     got restricted __le64 [usertype] *l2ptr
   drivers/iommu/arm-smmu-v3.c: note: in included file (through arch/arm64/include/asm/atomic.h, include/linux/atomic.h, include/asm-generic/bitops/atomic.h, ...):
   arch/arm64/include/asm/cmpxchg.h:172:1: sparse: sparse: cast truncates bits from constant value (ffffffff80000000 becomes 0)
   arch/arm64/include/asm/cmpxchg.h:172:1: sparse: sparse: cast truncates bits from constant value (ffffffff80000000 becomes 0)

vim +816 drivers/iommu/arm-smmu-v3.c

48ec83bcbcf5090f Will Deacon 2015-05-27  810  
48ec83bcbcf5090f Will Deacon 2015-05-27  811  static void queue_read(__le64 *dst, u64 *src, size_t n_dwords)
48ec83bcbcf5090f Will Deacon 2015-05-27  812  {
48ec83bcbcf5090f Will Deacon 2015-05-27  813  	int i;
48ec83bcbcf5090f Will Deacon 2015-05-27  814  
48ec83bcbcf5090f Will Deacon 2015-05-27  815  	for (i = 0; i < n_dwords; ++i)
48ec83bcbcf5090f Will Deacon 2015-05-27 @816  		*dst++ = le64_to_cpu(*src++);
48ec83bcbcf5090f Will Deacon 2015-05-27  817  }
48ec83bcbcf5090f Will Deacon 2015-05-27  818  

:::::: The code@line 816 was first introduced by commit
:::::: 48ec83bcbcf5090fcdf74a6168f161d247492979 iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices

:::::: TO: Will Deacon <will.deacon@arm.com>
:::::: CC: Joerg Roedel <jroedel@suse.de>

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

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