lkml.org 
[lkml]   [2020]   [May]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectarch/mips/bmips/setup.c:170:23: warning: array comparison always evaluates to true
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 444fc5cde64330661bf59944c43844e7d4c2ccd8
commit: afe956c577b2d5a3d9834e4424587c1ebcf90c4c kbuild: Enable -Wtautological-compare
date: 7 weeks ago
config: mips-randconfig-r033-20200527 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
git checkout afe956c577b2d5a3d9834e4424587c1ebcf90c4c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> arch/mips/bmips/setup.c:170:23: warning: array comparison always evaluates to true [-Wtautological-compare]
else if (__dtb_start != __dtb_end)
^
1 warning generated.

vim +170 arch/mips/bmips/setup.c

d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 155
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 156 void __init plat_mem_setup(void)
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 157 {
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 158 void *dtb;
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 159 const struct bmips_quirk *q;
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 160
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 161 set_io_port_base(0);
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 162 ioport_resource.start = 0;
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 163 ioport_resource.end = ~0;
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 164
dc7a12bdfccd94c arch/mips/bmips/setup.c Mauro Carvalho Chehab 2019-04-14 165 /* intended to somewhat resemble ARM; see Documentation/arm/booting.rst */
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 166 if (fw_arg0 == 0 && fw_arg1 == 0xffffffff)
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 167 dtb = phys_to_virt(fw_arg2);
e524c788bfc1d5e arch/mips/bmips/setup.c Yasha Cherikovsky 2018-09-25 168 else if (fw_passed_dtb) /* UHI interface or appended dtb */
15f37e1588920e0 arch/mips/bmips/setup.c Jonas Gorski 2016-06-20 169 dtb = (void *)fw_passed_dtb;
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 @170 else if (__dtb_start != __dtb_end)
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 171 dtb = (void *)__dtb_start;
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 172 else
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 173 panic("no dtb found");
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 174
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 175 __dt_setup_arch(dtb);
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 176
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 177 for (q = bmips_quirk_list; q->quirk_fn; q++) {
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 178 if (of_flat_dt_is_compatible(of_get_flat_dt_root(),
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 179 q->compatible)) {
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 180 q->quirk_fn();
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 181 }
4b049a6b275db68 arch/mips/bmips/setup.c Kevin Cernekee 2014-12-25 182 }
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 183 }
d666cd0246f78bd arch/mips/bcm3384/setup.c Kevin Cernekee 2014-10-20 184

:::::: The code at line 170 was first introduced by commit
:::::: 4b049a6b275db68c2c028937b89abd732dcdf536 MIPS: BMIPS: Add quirks for several Broadcom platforms

:::::: TO: Kevin Cernekee <cernekee@gmail.com>
:::::: CC: Ralf Baechle <ralf@linux-mips.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[unhandled content-type:application/gzip]
\
 
 \ /
  Last update: 2020-05-27 09:56    [W:0.036 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site