linux-kernel - drivers/net/wireless/intel/iwlwifi/fw/dbg.c:86: warning: Excess struct/union/enum/typedef member 'trans_len' description in 'iwl_fw_dump

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Message-ID: <202311250305.tf8Cus1Y-lkp@intel.com>
Date:   Sat, 25 Nov 2023 05:54:23 +0800
From:   kernel test robot <lkp@...el.com>
To:     Johannes Berg <johannes.berg@...el.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Luca Coelho <luciano.coelho@...el.com>
Subject: drivers/net/wireless/intel/iwlwifi/fw/dbg.c:86: warning: Excess
 struct/union/enum/typedef member 'trans_len' description in
 'iwl_fw_dump_ptrs'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f1a09972a45ae63efbd1587337c4be13b1893330
commit: 7174beb60c53209c6e98c9cee20efdee97ef880f iwlwifi: refactor firmware debug code
date:   6 years ago
config: powerpc-randconfig-003-20231123 (https://download.01.org/0day-ci/archive/20231125/202311250305.tf8Cus1Y-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231125/202311250305.tf8Cus1Y-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/202311250305.tf8Cus1Y-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/bug.h:4:0,
                    from arch/powerpc/include/asm/cmpxchg.h:8,
                    from arch/powerpc/include/asm/atomic.h:10,
                    from include/linux/atomic.h:4,
                    from include/linux/debug_locks.h:5,
                    from include/linux/lockdep.h:25,
                    from include/linux/spinlock_types.h:18,
                    from include/linux/mutex.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:15,
                    from include/linux/kobject.h:21,
                    from include/linux/device.h:17,
                    from include/linux/devcoredump.h:23,
                    from drivers/net/wireless/intel/iwlwifi/fw/dbg.c:65:
   include/linux/dma-mapping.h: In function 'dma_map_resource':
   arch/powerpc/include/asm/page.h:129:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
    #define pfn_valid(pfn)  ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)
                                   ^
   arch/powerpc/include/asm/bug.h:75:27: note: in definition of macro 'BUG_ON'
     if (__builtin_constant_p(x)) {    \
                              ^
   include/linux/dma-mapping.h:307:9: note: in expansion of macro 'pfn_valid'
     BUG_ON(pfn_valid(PHYS_PFN(phys_addr)));
            ^~~~~~~~~
   arch/powerpc/include/asm/page.h:129:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
    #define pfn_valid(pfn)  ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)
                                   ^
   arch/powerpc/include/asm/bug.h:76:7: note: in definition of macro 'BUG_ON'
      if (x)      \
          ^
   include/linux/dma-mapping.h:307:9: note: in expansion of macro 'pfn_valid'
     BUG_ON(pfn_valid(PHYS_PFN(phys_addr)));
            ^~~~~~~~~
   arch/powerpc/include/asm/page.h:129:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
    #define pfn_valid(pfn)  ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr)
                                   ^
   arch/powerpc/include/asm/bug.h:84:25: note: in definition of macro 'BUG_ON'
        "r" ((__force long)(x)));   \
                            ^
   include/linux/dma-mapping.h:307:9: note: in expansion of macro 'pfn_valid'
     BUG_ON(pfn_valid(PHYS_PFN(phys_addr)));
            ^~~~~~~~~
>> drivers/net/wireless/intel/iwlwifi/fw/dbg.c:86: warning: Excess struct/union/enum/typedef member 'trans_len' description in 'iwl_fw_dump_ptrs'


vim +86 drivers/net/wireless/intel/iwlwifi/fw/dbg.c

    72	
    73	/**
    74	 * struct iwl_fw_dump_ptrs - set of pointers needed for the fw-error-dump
    75	 *
    76	 * @fwrt_ptr: pointer to the buffer coming from fwrt
    77	 * @trans_ptr: pointer to struct %iwl_trans_dump_data which contains the
    78	 *	transport's data.
    79	 * @trans_len: length of the valid data in trans_ptr
    80	 * @fwrt_len: length of the valid data in fwrt_ptr
    81	 */
    82	struct iwl_fw_dump_ptrs {
    83		struct iwl_trans_dump_data *trans_ptr;
    84		void *fwrt_ptr;
    85		u32 fwrt_len;
  > 86	};
    87	

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