[xlnx:xlnx_rebase_v5.4 458/1762] drivers/media/platform/xilinx/xilinx-multi-scaler.c:361:18: warning: passing argument 1 of 'ioread32' discards 'const' qualifier from pointer target type

[kernel test robot]

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4
head:   d128303e4c53bcf7775c46771bf64c71596f3303
commit: 31ff947476b863c4f59eb26baa654631e7b05a7b [458/1762] v4l: xilinx-multi-scaler: Remove volatile
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/Xilinx/linux-xlnx/commit/31ff947476b863c4f59eb26baa654631e7b05a7b
        git remote add xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xlnx xlnx_rebase_v5.4
        git checkout 31ff947476b863c4f59eb26baa654631e7b05a7b
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

   drivers/media/platform/xilinx/xilinx-multi-scaler.c: In function 'xm2msc_readreg':
>> drivers/media/platform/xilinx/xilinx-multi-scaler.c:361:18: warning: passing argument 1 of 'ioread32' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     361 |  return ioread32(addr);
         |                  ^~~~
   In file included from arch/x86/include/asm/io.h:229,
                    from arch/x86/include/asm/realmode.h:15,
                    from arch/x86/include/asm/acpi.h:16,
                    from arch/x86/include/asm/fixmap.h:29,
                    from arch/x86/include/asm/apic.h:11,
                    from arch/x86/include/asm/smp.h:13,
                    from include/linux/smp.h:68,
                    from include/linux/percpu.h:7,
                    from include/linux/arch_topology.h:9,
                    from include/linux/topology.h:30,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/fs.h:15,
                    from drivers/media/platform/xilinx/xilinx-multi-scaler.c:16:
   include/asm-generic/iomap.h:32:30: note: expected 'void *' but argument is of type 'const void *'
      32 | extern unsigned int ioread32(void __iomem *);
         |                              ^~~~~~~~~~~~~~
   In file included from include/linux/printk.h:332,
                    from include/linux/kernel.h:15,
                    from include/linux/delay.h:22,
                    from drivers/media/platform/xilinx/xilinx-multi-scaler.c:15:
   drivers/media/platform/xilinx/xilinx-multi-scaler.c: In function 'xm2msc_parse_of':
   drivers/media/platform/xilinx/xilinx-multi-scaler.c:1782:15: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'resource_size_t' {aka 'unsigned int'} [-Wformat=]
    1782 |  dev_dbg(dev, "IO Mem 0x%llx mapped at %p\n", res->start, xm2msc->regs);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dynamic_debug.h:125:15: note: in definition of macro '__dynamic_func_call'
     125 |   func(&id, ##__VA_ARGS__);  \
         |               ^~~~~~~~~~~
   include/linux/dynamic_debug.h:157:2: note: in expansion of macro '_dynamic_func_call'
     157 |  _dynamic_func_call(fmt,__dynamic_dev_dbg,   \
         |  ^~~~~~~~~~~~~~~~~~
   include/linux/device.h:1751:2: note: in expansion of macro 'dynamic_dev_dbg'
    1751 |  dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
         |  ^~~~~~~~~~~~~~~
   include/linux/device.h:1751:23: note: in expansion of macro 'dev_fmt'
    1751 |  dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                       ^~~~~~~
   drivers/media/platform/xilinx/xilinx-multi-scaler.c:1782:2: note: in expansion of macro 'dev_dbg'
    1782 |  dev_dbg(dev, "IO Mem 0x%llx mapped at %p\n", res->start, xm2msc->regs);
         |  ^~~~~~~
   drivers/media/platform/xilinx/xilinx-multi-scaler.c:1782:28: note: format string is defined here
    1782 |  dev_dbg(dev, "IO Mem 0x%llx mapped at %p\n", res->start, xm2msc->regs);
         |                         ~~~^
         |                            |
         |                            long long unsigned int
         |                         %x


vim +361 drivers/media/platform/xilinx/xilinx-multi-scaler.c

f5d1fac4b3ef01 Suresh Gupta 2018-09-17  358  
31ff947476b863 Suresh Gupta 2018-10-12  359  static inline u32 xm2msc_readreg(const void __iomem *addr)
f5d1fac4b3ef01 Suresh Gupta 2018-09-17  360  {
f5d1fac4b3ef01 Suresh Gupta 2018-09-17 @361  	return ioread32(addr);
f5d1fac4b3ef01 Suresh Gupta 2018-09-17  362  }
f5d1fac4b3ef01 Suresh Gupta 2018-09-17  363  

:::::: The code at line 361 was first introduced by commit
:::::: f5d1fac4b3ef01a4f9a489e9be9a65964a5baf57 platform: xilinx: Add mem to mem Multi-Scaler driver (XM2MSC)

:::::: TO: Suresh Gupta <suresh.gupta at xilinx.com>
:::::: CC: Michal Simek <michal.simek at xilinx.com>

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