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Date: Sat, 3 Sep 2022 23:56:17 +0800
From: kernel test robot <lkp@...el.com>
To: Finn Thain <fthain@...ux-m68k.org>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Michael Ellerman <mpe@...erman.id.au>,
Christophe Leroy <christophe.leroy@...roup.eu>
Subject: arch/powerpc/boot/decompress.c:132:8: error: call to undeclared
function '__decompress'; ISO C99 and later do not support implicit function
declarations
Hi Finn,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d895ec7938c431fe61a731939da76a6461bc6133
commit: 86ce436e30d86327c9f5260f718104ae7b21f506 macintosh/via-pmu: Fix build failure when CONFIG_INPUT is disabled
date: 3 months ago
config: powerpc-randconfig-r012-20220903
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c55b41d5199d2394dd6cdb8f52180d8b81d809d4)
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
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=86ce436e30d86327c9f5260f718104ae7b21f506
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 86ce436e30d86327c9f5260f718104ae7b21f506
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
>> arch/powerpc/boot/decompress.c:132:8: error: call to undeclared function '__decompress'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
ret = __decompress(inbuf, input_size, NULL, flush, outbuf,
^
1 error generated.
vim +/__decompress +132 arch/powerpc/boot/decompress.c
1b7898ee276b39 Oliver O'Halloran 2016-09-22 97
1b7898ee276b39 Oliver O'Halloran 2016-09-22 98 /**
1b7898ee276b39 Oliver O'Halloran 2016-09-22 99 * partial_decompress - decompresses part or all of a compressed buffer
1b7898ee276b39 Oliver O'Halloran 2016-09-22 100 * @inbuf: input buffer
1b7898ee276b39 Oliver O'Halloran 2016-09-22 101 * @input_size: length of the input buffer
930a77c3ad79c3 Zhang Jianhua 2021-05-10 102 * @outbuf: output buffer
930a77c3ad79c3 Zhang Jianhua 2021-05-10 103 * @output_size: length of the output buffer
1b7898ee276b39 Oliver O'Halloran 2016-09-22 104 * @skip number of output bytes to ignore
1b7898ee276b39 Oliver O'Halloran 2016-09-22 105 *
1b7898ee276b39 Oliver O'Halloran 2016-09-22 106 * This function takes compressed data from inbuf, decompresses and write it to
1b7898ee276b39 Oliver O'Halloran 2016-09-22 107 * outbuf. Once output_size bytes are written to the output buffer, or the
1b7898ee276b39 Oliver O'Halloran 2016-09-22 108 * stream is exhausted the function will return the number of bytes that were
1b7898ee276b39 Oliver O'Halloran 2016-09-22 109 * decompressed. Otherwise it will return whatever error code the decompressor
1b7898ee276b39 Oliver O'Halloran 2016-09-22 110 * reported (NB: This is specific to each decompressor type).
1b7898ee276b39 Oliver O'Halloran 2016-09-22 111 *
1b7898ee276b39 Oliver O'Halloran 2016-09-22 112 * The skip functionality is mainly there so the program and discover
1b7898ee276b39 Oliver O'Halloran 2016-09-22 113 * the size of the compressed image so that it can ask firmware (if present)
1b7898ee276b39 Oliver O'Halloran 2016-09-22 114 * for an appropriately sized buffer.
1b7898ee276b39 Oliver O'Halloran 2016-09-22 115 */
1b7898ee276b39 Oliver O'Halloran 2016-09-22 116 long partial_decompress(void *inbuf, unsigned long input_size,
1b7898ee276b39 Oliver O'Halloran 2016-09-22 117 void *outbuf, unsigned long output_size, unsigned long _skip)
1b7898ee276b39 Oliver O'Halloran 2016-09-22 118 {
1b7898ee276b39 Oliver O'Halloran 2016-09-22 119 int ret;
1b7898ee276b39 Oliver O'Halloran 2016-09-22 120
1b7898ee276b39 Oliver O'Halloran 2016-09-22 121 /*
1b7898ee276b39 Oliver O'Halloran 2016-09-22 122 * The skipped bytes needs to be included in the size of data we want
1b7898ee276b39 Oliver O'Halloran 2016-09-22 123 * to decompress.
1b7898ee276b39 Oliver O'Halloran 2016-09-22 124 */
1b7898ee276b39 Oliver O'Halloran 2016-09-22 125 output_size += _skip;
1b7898ee276b39 Oliver O'Halloran 2016-09-22 126
1b7898ee276b39 Oliver O'Halloran 2016-09-22 127 decompressed_bytes = 0;
1b7898ee276b39 Oliver O'Halloran 2016-09-22 128 output_buffer = outbuf;
1b7898ee276b39 Oliver O'Halloran 2016-09-22 129 limit = output_size;
1b7898ee276b39 Oliver O'Halloran 2016-09-22 130 skip = _skip;
1b7898ee276b39 Oliver O'Halloran 2016-09-22 131
1b7898ee276b39 Oliver O'Halloran 2016-09-22 @132 ret = __decompress(inbuf, input_size, NULL, flush, outbuf,
:::::: The code at line 132 was first introduced by commit
:::::: 1b7898ee276b39e54d870dc4ef3374f663d0b426 powerpc/boot: Use the pre-boot decompression API
:::::: TO: Oliver O'Halloran <oohall@...il.com>
:::::: CC: Michael Ellerman <mpe@...erman.id.au>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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