[android-common:android12-5.10 7514/7527] drivers/iommu/iommu.c:7:24: warning: format '%ld' expects argument of type 'long int', but argument 6 has type 'size_t' {aka 'unsigned int'}

Sunday, 11 April 2021

tree:   https://android.googlesource.com/kernel/common android12-5.10
head:   92de566762db61b138765a26e4afaacc7d7f7816
commit: 08d46858c709eb584f7ecd5f385ba32dd739d39d [7514/7527] FROMLIST: iommu: Add support
for the map_pages() callback
config: i386-randconfig-s002-20210411 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-279-g6d5d9b42-dirty
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android12-5.10
        git checkout 08d46858c709eb584f7ecd5f385ba32dd739d39d
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com&gt;

All warnings (new ones prefixed by >>):

   drivers/iommu/iommu.c: In function '__iommu_map_pages':
...
> drivers/iommu/iommu.c:7:24: warning: format '%ld' expects
argument of type 'long int', but argument 6 has type 'size_t' {aka
'unsigned int'} [-Wformat=]        7 | #define pr_fmt(fmt)    "iommu:
" fmt
         |                        ^~~~~~~~~
   include/linux/dynamic_debug.h:129:15: note: in expansion of macro 'pr_fmt'
     129 |   func(&id, ##__VA_ARGS__);  \
         |               ^~~~~~~~~~~
   include/linux/dynamic_debug.h:147:2: note: in expansion of macro
'__dynamic_func_call'
     147 |  __dynamic_func_call(__UNIQUE_ID(ddebug), fmt, func, ##__VA_ARGS__)
         |  ^~~~~~~~~~~~~~~~~~~
   include/linux/dynamic_debug.h:157:2: note: in expansion of macro
'_dynamic_func_call'
     157 |  _dynamic_func_call(fmt, __dynamic_pr_debug,  \
         |  ^~~~~~~~~~~~~~~~~~
   include/linux/printk.h:424:2: note: in expansion of macro 'dynamic_pr_debug'
     424 |  dynamic_pr_debug(fmt, ##__VA_ARGS__)
         |  ^~~~~~~~~~~~~~~~
   drivers/iommu/iommu.c:2398:2: note: in expansion of macro 'pr_debug'
    2398 |  pr_debug("mapping: iova 0x%lx pa %pa pgsize 0x%zx count %ld\n",
         |  ^~~~~~~~
   drivers/iommu/iommu.c:2398:60: note: format string is defined here
    2398 |  pr_debug("mapping: iova 0x%lx pa %pa pgsize 0x%zx count %ld\n",
         |                                                          ~~^
         |                                                            |
         |                                                            long int
         |                                                          %d

vim +7 drivers/iommu/iommu.c

92e7066fde31d5 Joerg Roedel   2015-05-28 @7  #define pr_fmt(fmt)    "iommu: "
fmt
7d3002cc8c160d Ohad Ben-Cohen 2011-11-10  8  

:::::: The code at line 7 was first introduced by commit
:::::: 92e7066fde31d5ac48a9bccc12d3063d251dd079 iommu: Remove function name from pr_fmt()

:::::: TO: Joerg Roedel <jroedel(a)suse.de&gt;
:::::: CC: Joerg Roedel <jroedel(a)suse.de&gt;

---
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