[linux-next:master 7640/10763] drivers/cpufreq/tegra186-cpufreq.c:108:18: sparse: sparse: incorrect type in assignment (different address spaces)

[kernel test robot <lkp@intel.com>]

[-- Attachment #1: Type: text/plain, Size: 4721 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   d1d2220c7f39d0fca302c4ba6cca4ede01660a2b
commit: b89c01c960511dcffe3666d89645c95445d00902 [7640/10763] cpufreq: tegra186: Fix initial frequency
config: arm64-randconfig-s031-20200923 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.2-201-g24bdaac6-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=b89c01c960511dcffe3666d89645c95445d00902
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout b89c01c960511dcffe3666d89645c95445d00902
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 

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


sparse warnings: (new ones prefixed by >>)

   drivers/cpufreq/tegra186-cpufreq.c:72:37: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *driver_data @@     got void [noderef] __iomem * @@
   drivers/cpufreq/tegra186-cpufreq.c:72:37: sparse:     expected void *driver_data
   drivers/cpufreq/tegra186-cpufreq.c:72:37: sparse:     got void [noderef] __iomem *
   drivers/cpufreq/tegra186-cpufreq.c:87:40: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __iomem *edvd_reg @@     got void *driver_data @@
   drivers/cpufreq/tegra186-cpufreq.c:87:40: sparse:     expected void [noderef] __iomem *edvd_reg
   drivers/cpufreq/tegra186-cpufreq.c:87:40: sparse:     got void *driver_data
>> drivers/cpufreq/tegra186-cpufreq.c:108:18: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void [noderef] __iomem *edvd_reg @@     got void *driver_data @@
   drivers/cpufreq/tegra186-cpufreq.c:108:18: sparse:     expected void [noderef] __iomem *edvd_reg
   drivers/cpufreq/tegra186-cpufreq.c:108:18: sparse:     got void *driver_data

vim +108 drivers/cpufreq/tegra186-cpufreq.c

    53	
    54	static int tegra186_cpufreq_init(struct cpufreq_policy *policy)
    55	{
    56		struct tegra186_cpufreq_data *data = cpufreq_get_driver_data();
    57		unsigned int i;
    58	
    59		for (i = 0; i < data->num_clusters; i++) {
    60			struct tegra186_cpufreq_cluster *cluster = &data->clusters[i];
    61			const struct tegra186_cpufreq_cluster_info *info =
    62				cluster->info;
    63			int core;
    64	
    65			for (core = 0; core < ARRAY_SIZE(info->cpus); core++) {
    66				if (info->cpus[core] == policy->cpu)
    67					break;
    68			}
    69			if (core == ARRAY_SIZE(info->cpus))
    70				continue;
    71	
  > 72			policy->driver_data =
    73				data->regs + info->offset + EDVD_CORE_VOLT_FREQ(core);
    74			policy->freq_table = cluster->table;
    75			break;
    76		}
    77	
    78		policy->cpuinfo.transition_latency = 300 * 1000;
    79	
    80		return 0;
    81	}
    82	
    83	static int tegra186_cpufreq_set_target(struct cpufreq_policy *policy,
    84					       unsigned int index)
    85	{
    86		struct cpufreq_frequency_table *tbl = policy->freq_table + index;
    87		void __iomem *edvd_reg = policy->driver_data;
    88		u32 edvd_val = tbl->driver_data;
    89	
    90		writel(edvd_val, edvd_reg);
    91	
    92		return 0;
    93	}
    94	
    95	static unsigned int tegra186_cpufreq_get(unsigned int cpu)
    96	{
    97		struct cpufreq_frequency_table *tbl;
    98		struct cpufreq_policy *policy;
    99		void __iomem *edvd_reg;
   100		unsigned int i, freq = 0;
   101		u32 ndiv;
   102	
   103		policy = cpufreq_cpu_get(cpu);
   104		if (!policy)
   105			return 0;
   106	
   107		tbl = policy->freq_table;
 > 108		edvd_reg = policy->driver_data;
   109		ndiv = readl(edvd_reg) & EDVD_CORE_VOLT_FREQ_F_MASK;
   110	
   111		for (i = 0; tbl[i].frequency != CPUFREQ_TABLE_END; i++) {
   112			if ((tbl[i].driver_data & EDVD_CORE_VOLT_FREQ_F_MASK) == ndiv) {
   113				freq = tbl[i].frequency;
   114				break;
   115			}
   116		}
   117	
   118		cpufreq_cpu_put(policy);
   119	
   120		return freq;
   121	}
   122	

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

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 38635 bytes --]