[ammarfaizi2-block:crng/random/jd/not-zero-entropy 3/12] kernel/time/timekeeping.c:2388: warning: expecting prototype for random_read_entropy_fallback(). Prototype was for random_get_entropy_fallback() instead

From: kernel test robot
Date: Tue Apr 12 2022 - 08:11:56 EST


tree: https://github.com/ammarfaizi2/linux-block crng/random/jd/not-zero-entropy
head: 4ee3bf173a552cd996e048d57f65bb5b471ab577
commit: aeeed98e20910aeafd5db8c56b449810b60bad9f [3/12] timekeeping: add raw clock fallback for random_get_entropy()
config: arc-buildonly-randconfig-r003-20220411 (https://download.01.org/0day-ci/archive/20220412/202204121944.p7MPjuCv-lkp@xxxxxxxxx/config)
compiler: arceb-elf-gcc (GCC) 11.2.0
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://github.com/ammarfaizi2/linux-block/commit/aeeed98e20910aeafd5db8c56b449810b60bad9f
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block crng/random/jd/not-zero-entropy
git checkout aeeed98e20910aeafd5db8c56b449810b60bad9f
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash kernel/time/

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

All warnings (new ones prefixed by >>):

kernel/time/timekeeping.c:1684: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* We have three kinds of time sources to use for sleep time
kernel/time/timekeeping.c:1705: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* 1) can be determined whether to use or not only when doing
>> kernel/time/timekeeping.c:2388: warning: expecting prototype for random_read_entropy_fallback(). Prototype was for random_get_entropy_fallback() instead
kernel/time/timekeeping.c:2396: warning: Function parameter or member 'txc' not described in 'do_adjtimex'
kernel/time/timekeeping.c:2462: warning: Function parameter or member 'phase_ts' not described in 'hardpps'
kernel/time/timekeeping.c:2462: warning: Function parameter or member 'raw_ts' not described in 'hardpps'


vim +2388 kernel/time/timekeeping.c

2382
2383 /**
2384 * random_read_entropy_fallback - Returns the raw clock source value,
2385 * used by random.c for platforms with no valid random_get_entropy().
2386 */
2387 unsigned long random_get_entropy_fallback(void)
> 2388 {
2389 return tk_clock_read(&tk_core.timekeeper.tkr_mono);
2390 }
2391

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