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Message-ID: <202307311920.0ZdHwXvk-lkp@intel.com>
Date:   Mon, 31 Jul 2023 20:04:23 +0800
From:   kernel test robot <lkp@...el.com>
To:     LeoLiu-oc <LeoLiu-oc@...oxin.com>, olivia@...enic.com,
        herbert@...dor.apana.org.au, jiajie.ho@...rfivetech.com,
        conor.dooley@...rochip.com, martin@...ser.cx, mmyangfl@...il.com,
        jenny.zhang@...rfivetech.com, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        leoliu@...oxin.com, CobeChen@...oxin.com, YunShen@...oxin.com,
        TonyWWang@...oxin.com, leoliu-oc <leoliu-oc@...oxin.com>
Subject: Re: [PATCH v2 2/2] hwrng: add Zhaoxin HW RNG driver

Hi LeoLiu-oc,

kernel test robot noticed the following build errors:

[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on char-misc/char-misc-next char-misc/char-misc-linus herbert-cryptodev-2.6/master linus/master v6.5-rc4 next-20230731]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/LeoLiu-oc/hwrng-via-rng-convert-to-x86_cpu_id-probing/20230731-164950
base:   char-misc/char-misc-testing
patch link:    https://lore.kernel.org/r/20230731084515.2057375-3-LeoLiu-oc%40zhaoxin.com
patch subject: [PATCH v2 2/2] hwrng: add Zhaoxin HW RNG driver
config: hexagon-randconfig-r024-20230731 (https://download.01.org/0day-ci/archive/20230731/202307311920.0ZdHwXvk-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce: (https://download.01.org/0day-ci/archive/20230731/202307311920.0ZdHwXvk-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307311920.0ZdHwXvk-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/char/hw_random/zhaoxin-rng.c:14:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from drivers/char/hw_random/zhaoxin-rng.c:14:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from drivers/char/hw_random/zhaoxin-rng.c:14:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
>> drivers/char/hw_random/zhaoxin-rng.c:16:10: fatal error: 'asm/cpu_device_id.h' file not found
   #include <asm/cpu_device_id.h>
            ^~~~~~~~~~~~~~~~~~~~~
   6 warnings and 1 error generated.


vim +16 drivers/char/hw_random/zhaoxin-rng.c

  > 16	#include <asm/cpu_device_id.h>
    17	#include <asm/fpu/api.h>
    18	

-- 
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