[linux-next:master 1027/3956] arch/mips/kernel/cacheinfo.c:112:3: warning: Variable 'level' is modified but its new value is never used.

[linux-next:master 1027/3956] arch/mips/kernel/cacheinfo.c:112:3: warning: Variable 'level' is modified but its new value is never used.

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b3a3cbdec55b090d22a09f75efb7c7d34cb97f25
commit: e8bb8f28233d88f4ad89fdf83d54bbc4a8ee40f2 [1027/3956] MIPS: cacheinfo: Add missing VCache
compiler: mips-linux-gcc (GCC) 9.3.0

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


cppcheck possible warnings: (new ones prefixed by >>, may not real problems)

>> arch/mips/kernel/cacheinfo.c:112:3: warning: Variable 'level' is modified but its new value is never used. [unreadVariable]
     level++;
     ^

vim +/level +112 arch/mips/kernel/cacheinfo.c

3b1313eb32c499d4 Vladimir Kondratiev 2019-11-24   76  
ef462f3b64e9fb0c Justin Chen         2016-12-07   77  static int __populate_cache_leaves(unsigned int cpu)
ef462f3b64e9fb0c Justin Chen         2016-12-07   78  {
ef462f3b64e9fb0c Justin Chen         2016-12-07   79  	struct cpuinfo_mips *c = &current_cpu_data;
ef462f3b64e9fb0c Justin Chen         2016-12-07   80  	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
ef462f3b64e9fb0c Justin Chen         2016-12-07   81  	struct cacheinfo *this_leaf = this_cpu_ci->info_list;
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   82  	int level = 1;
ef462f3b64e9fb0c Justin Chen         2016-12-07   83  
ef462f3b64e9fb0c Justin Chen         2016-12-07   84  	if (c->icache.waysize) {
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   85  		/* I/D caches are per core */
3b1313eb32c499d4 Vladimir Kondratiev 2019-11-24   86  		fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   87  		populate_cache(dcache, this_leaf, level, CACHE_TYPE_DATA);
3b1313eb32c499d4 Vladimir Kondratiev 2019-11-24   88  		fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   89  		populate_cache(icache, this_leaf, level, CACHE_TYPE_INST);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   90  		level++;
ef462f3b64e9fb0c Justin Chen         2016-12-07   91  	} else {
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   92  		populate_cache(dcache, this_leaf, level, CACHE_TYPE_UNIFIED);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   93  		level++;
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   94  	}
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   95  
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   96  	if (c->vcache.waysize) {
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   97  		/* Vcache is per core as well */
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   98  		fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30   99  		populate_cache(vcache, this_leaf, level, CACHE_TYPE_UNIFIED);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30  100  		level++;
ef462f3b64e9fb0c Justin Chen         2016-12-07  101  	}
ef462f3b64e9fb0c Justin Chen         2016-12-07  102  
3b1313eb32c499d4 Vladimir Kondratiev 2019-11-24  103  	if (c->scache.waysize) {
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30  104  		/* Scache is per cluster */
3b1313eb32c499d4 Vladimir Kondratiev 2019-11-24  105  		fill_cpumask_cluster(cpu, &this_leaf->shared_cpu_map);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30  106  		populate_cache(scache, this_leaf, level, CACHE_TYPE_UNIFIED);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30  107  		level++;
3b1313eb32c499d4 Vladimir Kondratiev 2019-11-24  108  	}
ef462f3b64e9fb0c Justin Chen         2016-12-07  109  
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30  110  	if (c->tcache.waysize) {
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30  111  		populate_cache(tcache, this_leaf, level, CACHE_TYPE_UNIFIED);
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30 @112  		level++;
e8bb8f28233d88f4 Jiaxun Yang         2020-12-30  113  	}
ef462f3b64e9fb0c Justin Chen         2016-12-07  114  
b8bea8a5e5d942e6 Vladimir Kondratiev 2019-07-16  115  	this_cpu_ci->cpu_map_populated = true;
b8bea8a5e5d942e6 Vladimir Kondratiev 2019-07-16  116  
ef462f3b64e9fb0c Justin Chen         2016-12-07  117  	return 0;
ef462f3b64e9fb0c Justin Chen         2016-12-07  118  }
ef462f3b64e9fb0c Justin Chen         2016-12-07  119  

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