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Message-ID: <202102222147.whCFmnm7-lkp@intel.com>
Date:   Mon, 22 Feb 2021 21:16:53 +0800
From:   kernel test robot <lkp@...el.com>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: arch/mips/boot/compressed/../../../../lib/zstd/decompress.c:126:12:
 warning: no previous prototype for 'ZSTD_createDCtx_advanced'

Hi Paul,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   31caf8b2a847214be856f843e251fc2ed2cd1075
commit: a510b616131f85215ba156ed67e5ed1c0701f80f MIPS: Add support for ZSTD-compressed kernels
date:   6 months ago
config: mips-randconfig-r014-20210222 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a510b616131f85215ba156ed67e5ed1c0701f80f
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout a510b616131f85215ba156ed67e5ed1c0701f80f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 

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

All warnings (new ones prefixed by >>):

   arch/mips/boot/compressed/decompress.c:38:6: warning: no previous prototype for 'error' [-Wmissing-prototypes]
      38 | void error(char *x)
         |      ^~~~~
   In file included from arch/mips/boot/compressed/../../../../lib/decompress_unzstd.c:75,
                    from arch/mips/boot/compressed/decompress.c:76:
>> arch/mips/boot/compressed/../../../../lib/zstd/decompress.c:126:12: warning: no previous prototype for 'ZSTD_createDCtx_advanced' [-Wmissing-prototypes]
     126 | ZSTD_DCtx *ZSTD_createDCtx_advanced(ZSTD_customMem customMem)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~
>> arch/mips/boot/compressed/../../../../lib/zstd/decompress.c:394:8: warning: no previous prototype for 'ZSTD_getcBlockSize' [-Wmissing-prototypes]
     394 | size_t ZSTD_getcBlockSize(const void *src, size_t srcSize, blockProperties_t *bpPtr)
         |        ^~~~~~~~~~~~~~~~~~
>> arch/mips/boot/compressed/../../../../lib/zstd/decompress.c:432:8: warning: no previous prototype for 'ZSTD_decodeLiteralsBlock' [-Wmissing-prototypes]
     432 | size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx *dctx, const void *src, size_t srcSize) /* note : srcSize < BLOCKSIZE */
         |        ^~~~~~~~~~~~~~~~~~~~~~~~
>> arch/mips/boot/compressed/../../../../lib/zstd/decompress.c:794:8: warning: no previous prototype for 'ZSTD_decodeSeqHeaders' [-Wmissing-prototypes]
     794 | size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx *dctx, int *nbSeqPtr, const void *src, size_t srcSize)
         |        ^~~~~~~~~~~~~~~~~~~~~
>> arch/mips/boot/compressed/../../../../lib/zstd/decompress.c:1497:8: warning: no previous prototype for 'ZSTD_generateNxBytes' [-Wmissing-prototypes]
    1497 | size_t ZSTD_generateNxBytes(void *dst, size_t dstCapacity, BYTE byte, size_t length)
         |        ^~~~~~~~~~~~~~~~~~~~
   arch/mips/boot/compressed/decompress.c:81:6: warning: no previous prototype for '__stack_chk_fail' [-Wmissing-prototypes]
      81 | void __stack_chk_fail(void)
         |      ^~~~~~~~~~~~~~~~
   arch/mips/boot/compressed/decompress.c:86:6: warning: no previous prototype for 'decompress_kernel' [-Wmissing-prototypes]
      86 | void decompress_kernel(unsigned long boot_heap_start)
         |      ^~~~~~~~~~~~~~~~~
   In file included from arch/mips/boot/compressed/../../../../lib/zstd/fse_decompress.c:50,
                    from arch/mips/boot/compressed/../../../../lib/decompress_unzstd.c:72,
                    from arch/mips/boot/compressed/decompress.c:76:
   arch/mips/boot/compressed/../../../../lib/zstd/zstd_internal.h:124:18: warning: 'OF_defaultNormLog' defined but not used [-Wunused-const-variable=]
     124 | static const U32 OF_defaultNormLog = OF_DEFAULTNORMLOG;
         |                  ^~~~~~~~~~~~~~~~~
   arch/mips/boot/compressed/../../../../lib/zstd/zstd_internal.h:122:18: warning: 'OF_defaultNorm' defined but not used [-Wunused-const-variable=]
     122 | static const S16 OF_defaultNorm[MaxOff + 1] = {1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1};
         |                  ^~~~~~~~~~~~~~
   arch/mips/boot/compressed/../../../../lib/zstd/zstd_internal.h:120:18: warning: 'ML_defaultNormLog' defined but not used [-Wunused-const-variable=]
     120 | static const U32 ML_defaultNormLog = ML_DEFAULTNORMLOG;
         |                  ^~~~~~~~~~~~~~~~~
   arch/mips/boot/compressed/../../../../lib/zstd/zstd_internal.h:117:18: warning: 'ML_defaultNorm' defined but not used [-Wunused-const-variable=]
     117 | static const S16 ML_defaultNorm[MaxML + 1] = {1, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  1,  1,  1,  1,  1,  1, 1,
         |                  ^~~~~~~~~~~~~~
   arch/mips/boot/compressed/../../../../lib/zstd/zstd_internal.h:113:18: warning: 'LL_defaultNormLog' defined but not used [-Wunused-const-variable=]
     113 | static const U32 LL_defaultNormLog = LL_DEFAULTNORMLOG;
         |                  ^~~~~~~~~~~~~~~~~
   arch/mips/boot/compressed/../../../../lib/zstd/zstd_internal.h:111:18: warning: 'LL_defaultNorm' defined but not used [-Wunused-const-variable=]
     111 | static const S16 LL_defaultNorm[MaxLL + 1] = {4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 1, 1, 1, 1, 1, -1, -1, -1, -1};
         |                  ^~~~~~~~~~~~~~


vim +/ZSTD_createDCtx_advanced +126 arch/mips/boot/compressed/../../../../lib/zstd/decompress.c

73f3d1b48f5069 Nick Terrell 2017-08-09  125  
73f3d1b48f5069 Nick Terrell 2017-08-09 @126  ZSTD_DCtx *ZSTD_createDCtx_advanced(ZSTD_customMem customMem)
73f3d1b48f5069 Nick Terrell 2017-08-09  127  {
73f3d1b48f5069 Nick Terrell 2017-08-09  128  	ZSTD_DCtx *dctx;
73f3d1b48f5069 Nick Terrell 2017-08-09  129  
73f3d1b48f5069 Nick Terrell 2017-08-09  130  	if (!customMem.customAlloc || !customMem.customFree)
73f3d1b48f5069 Nick Terrell 2017-08-09  131  		return NULL;
73f3d1b48f5069 Nick Terrell 2017-08-09  132  
73f3d1b48f5069 Nick Terrell 2017-08-09  133  	dctx = (ZSTD_DCtx *)ZSTD_malloc(sizeof(ZSTD_DCtx), customMem);
73f3d1b48f5069 Nick Terrell 2017-08-09  134  	if (!dctx)
73f3d1b48f5069 Nick Terrell 2017-08-09  135  		return NULL;
73f3d1b48f5069 Nick Terrell 2017-08-09  136  	memcpy(&dctx->customMem, &customMem, sizeof(customMem));
73f3d1b48f5069 Nick Terrell 2017-08-09  137  	ZSTD_decompressBegin(dctx);
73f3d1b48f5069 Nick Terrell 2017-08-09  138  	return dctx;
73f3d1b48f5069 Nick Terrell 2017-08-09  139  }
73f3d1b48f5069 Nick Terrell 2017-08-09  140  

:::::: The code at line 126 was first introduced by commit
:::::: 73f3d1b48f5069d46ba48aa28c2898dc93185560 lib: Add zstd modules

:::::: TO: Nick Terrell <terrelln@...com>
:::::: CC: Chris Mason <clm@...com>

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

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