tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   a0d54b4f5b219fb31f0776e9f53aa137e78ae431
commit: 7b285f41f7376dc37e7fad1e803995fd39f42848 media: ipu3-cio2: Introduce 
CIO2_LOP_ENTRIES constant
date:   4 months ago
config: ia64-randconfig-s031-20210112 (attached as .config)
compiler: ia64-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
        # 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7b285f41f7376dc37e7fad1e803995fd39f42848
        git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 7b285f41f7376dc37e7fad1e803995fd39f42848
        # 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=ia64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


"sparse warnings: (new ones prefixed by >>)"
>> drivers/media/pci/intel/ipu3/ipu3-cio2.c:163:63: sparse: sparse: cast 
>> truncates bits from constant value (20000 becomes 0)

vim +163 drivers/media/pci/intel/ipu3/ipu3-cio2.c

   154  
   155  /* Initialize fpbt entries to point to dummy frame */
   156  static void cio2_fbpt_entry_init_dummy(struct cio2_device *cio2,
   157                                         struct cio2_fbpt_entry
   158                                         entry[CIO2_MAX_LOPS])
   159  {
   160          unsigned int i;
   161  
   162          entry[0].first_entry.first_page_offset = 0;
 > 163          entry[1].second_entry.num_of_pages = CIO2_LOP_ENTRIES * 
 > CIO2_MAX_LOPS;
   164          entry[1].second_entry.last_page_available_bytes = 
CIO2_PAGE_SIZE - 1;
   165  
   166          for (i = 0; i < CIO2_MAX_LOPS; i++)
   167                  entry[i].lop_page_addr = cio2->dummy_lop_bus_addr >> 
PAGE_SHIFT;
   168  
   169          cio2_fbpt_entry_enable(cio2, entry);
   170  }
   171  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

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