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Date: Tue, 2 Jan 2024 09:37:28 +0800
From: kernel test robot <lkp@intel.com>
To: Arend van Spriel <arend.vanspriel@broadcom.com>,
	Kalle Valo <kvalo@kernel.org>
Cc: oe-kbuild-all@lists.linux.dev, linux-wireless@vger.kernel.org,
	Arend van Spriel <arend.vanspriel@broadcom.com>
Subject: Re: [PATCH 1/4] wifi: brcmfmac: export firmware interface functions
Message-ID: <202401020903.F2PfPAdw-lkp@intel.com>
References: <20240101084430.161821-2-arend.vanspriel@broadcom.com>
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In-Reply-To: <20240101084430.161821-2-arend.vanspriel@broadcom.com>

Hi Arend,

kernel test robot noticed the following build warnings:

[auto build test WARNING on wireless-next/main]
[also build test WARNING on wireless/main linus/master v6.7-rc8 next-20231222]
[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/Arend-van-Spriel/wifi-brcmfmac-export-firmware-interface-functions/20240101-164717
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git main
patch link:    https://lore.kernel.org/r/20240101084430.161821-2-arend.vanspriel%40broadcom.com
patch subject: [PATCH 1/4] wifi: brcmfmac: export firmware interface functions
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20240102/202401020903.F2PfPAdw-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240102/202401020903.F2PfPAdw-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401020903.F2PfPAdw-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/uapi/linux/swab.h:8,
                    from include/linux/swab.h:5,
                    from include/uapi/linux/byteorder/big_endian.h:14,
                    from include/linux/byteorder/big_endian.h:5,
                    from arch/m68k/include/uapi/asm/byteorder.h:5,
                    from include/asm-generic/bitops/le.h:6,
                    from arch/m68k/include/asm/bitops.h:566,
                    from include/linux/bitops.h:68,
                    from include/linux/kernel.h:23,
                    from drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:8:
   In function '__arch_swab32',
       inlined from '__fswab32' at include/uapi/linux/swab.h:60:9,
       inlined from 'brcmf_fil_cmd_int_get' at drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.h:99:19,
       inlined from 'brcmf_cfg80211_get_station_ibss' at drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:3088:8:
>> arch/m68k/include/uapi/asm/swab.h:22:9: warning: 'rate' is used uninitialized [-Wuninitialized]
      22 |         __asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
         |         ^~~~~~~
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c: In function 'brcmf_cfg80211_get_station_ibss':
   drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:3084:13: note: 'rate' was declared here
    3084 |         u32 rate;
         |             ^~~~


vim +/rate +22 arch/m68k/include/uapi/asm/swab.h

9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16  19  
9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16  20  static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16  21  {
9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16 @22  	__asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16  23  	return val;
9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16  24  }
9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16  25  #define __arch_swab32 __arch_swab32
6aeea60aee9454 arch/m68k/include/asm/swab.h Harvey Harrison 2009-01-20  26  #endif
9863a0babc2f0d arch/m68k/include/asm/swab.h Greg Ungerer    2009-03-16  27  

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0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki