Re: arch/arm/mach-omap2/sr_device.c:207:51: warning: variable 'sr_inst' is uninitialized when used here

[Tony Lindgren]

* kernel test robot  [210327 05:06]:
> >> arch/arm/mach-omap2/sr_device.c:207:51: warning: variable 'sr_inst' is 
> >> uninitialized when used here [-Wuninitialized]
>name = kasprintf(GFP_KERNEL, "smartreflex_%s", 
> sr_inst[i]);
>   
> ^~~
>arch/arm/mach-omap2/sr_device.c:191:29: note: initialize the variable 
> 'sr_inst' to silence this warning
>const char * const *sr_inst;
>   ^
>= NULL
>1 warning generated.

Thanks for the report, FYI I posted a fix for this at:

https://lore.kernel.org/linux-omap/20210331063556.30654-1-t...@atomide.com/T/#u

Regards,

Tony

arch/arm/mach-omap2/sr_device.c:207:51: warning: variable 'sr_inst' is uninitialized when used here

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   0f4498cef9f5cd18d7c6639a2a902ec1edc5be4e
commit: fbfa463be8dc7957ee4f81556e9e1ea2a951807d ARM: OMAP2+: Fix smartreflex 
init regression after dropping legacy data
date:   6 weeks ago
config: arm-randconfig-r025-20210326 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 
f490a5969bd52c8a48586f134ff8f02ccbb295b3)
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 arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fbfa463be8dc7957ee4f81556e9e1ea2a951807d
git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout fbfa463be8dc7957ee4f81556e9e1ea2a951807d
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot 

All warnings (new ones prefixed by >>):

>> arch/arm/mach-omap2/sr_device.c:207:51: warning: variable 'sr_inst' is 
>> uninitialized when used here [-Wuninitialized]
   name = kasprintf(GFP_KERNEL, "smartreflex_%s", 
sr_inst[i]);
  
^~~
   arch/arm/mach-omap2/sr_device.c:191:29: note: initialize the variable 
'sr_inst' to silence this warning
   const char * const *sr_inst;
  ^
   = NULL
   1 warning generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for TEGRA20_APB_DMA
   Depends on DMADEVICES && (ARCH_TEGRA || COMPILE_TEST
   Selected by
   - SOC_TEGRA_FUSE && ARCH_TEGRA && ARCH_TEGRA_2x_SOC


vim +/sr_inst +207 arch/arm/mach-omap2/sr_device.c

   188  
   189  int __init omap_devinit_smartreflex(void)
   190  {
   191  const char * const *sr_inst;
   192  int i, nr_sr = 0;
   193  
   194  if (soc_is_omap44xx()) {
   195  sr_inst = omap4_sr_instances;
   196  nr_sr = ARRAY_SIZE(omap4_sr_instances);
   197  
   198  } else if (soc_is_dra7xx()) {
   199  sr_inst = dra7_sr_instances;
   200  nr_sr = ARRAY_SIZE(dra7_sr_instances);
   201  }
   202  
   203  if (nr_sr) {
   204  const char *name, *voltdm;
   205  
   206  for (i = 0; i < nr_sr; i++) {
 > 207  name = kasprintf(GFP_KERNEL, "smartreflex_%s", 
 > sr_inst[i]);

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


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