[linux-next:master 13548/14867] drivers/spi/spi-altera-dfl.c:52:30: sparse: sparse: incorrect type in initializer (different address spaces)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   e3d35712f85ac84fb06234848f6c043ab418cf8b
commit: ba2fc167e9447596a812e828842d0130ea9cd0e4 [13548/14867] spi: altera: Add DFL bus driver for Altera API Controller
config: ia64-randconfig-s032-20210424 (attached as .config)
compiler: ia64-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: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=ba2fc167e9447596a812e828842d0130ea9cd0e4
        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 ba2fc167e9447596a812e828842d0130ea9cd0e4
        # 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__' W=1 ARCH=ia64 

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


sparse warnings: (new ones prefixed by >>)
>> drivers/spi/spi-altera-dfl.c:52:30: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __iomem *base @@     got void *context @@
   drivers/spi/spi-altera-dfl.c:52:30: sparse:     expected void [noderef] __iomem *base
   drivers/spi/spi-altera-dfl.c:52:30: sparse:     got void *context
   drivers/spi/spi-altera-dfl.c:78:30: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void [noderef] __iomem *base @@     got void *context @@
   drivers/spi/spi-altera-dfl.c:78:30: sparse:     expected void [noderef] __iomem *base
   drivers/spi/spi-altera-dfl.c:78:30: sparse:     got void *context
>> drivers/spi/spi-altera-dfl.c:161:22: sparse: sparse: incorrect type in argument 3 (different address spaces) @@     expected void *bus_context @@     got void [noderef] __iomem *[assigned] base @@
   drivers/spi/spi-altera-dfl.c:161:22: sparse:     expected void *bus_context
   drivers/spi/spi-altera-dfl.c:161:22: sparse:     got void [noderef] __iomem *[assigned] base
   drivers/spi/spi-altera-dfl.c: note: in included file (through arch/ia64/include/asm/io.h, include/linux/io.h):
   include/asm-generic/io.h:236:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] value @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:236:22: sparse:     expected unsigned long long [usertype] value
   include/asm-generic/io.h:236:22: sparse:     got restricted __le64 [usertype]
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:236:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] value @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:236:22: sparse:     expected unsigned long long [usertype] value
   include/asm-generic/io.h:236:22: sparse:     got restricted __le64 [usertype]
   include/asm-generic/io.h:236:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] value @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:236:22: sparse:     expected unsigned long long [usertype] value
   include/asm-generic/io.h:236:22: sparse:     got restricted __le64 [usertype]
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64

vim +52 drivers/spi/spi-altera-dfl.c

    48	
    49	static int indirect_bus_reg_read(void *context, unsigned int reg,
    50					 unsigned int *val)
    51	{
  > 52		void __iomem *base = context;
    53		int loops;
    54		u64 v;
    55	
    56		writeq((reg >> 2) | INDIRECT_RD, base + INDIRECT_ADDR);
    57	
    58		loops = 0;
    59		while ((readq(base + INDIRECT_ADDR) & INDIRECT_RD) &&
    60		       (loops++ < INDIRECT_TIMEOUT))
    61			cpu_relax();
    62	
    63		if (loops >= INDIRECT_TIMEOUT) {
    64			pr_err("%s timed out %d\n", __func__, loops);
    65			return -ETIME;
    66		}
    67	
    68		v = readq(base + INDIRECT_RD_DATA);
    69	
    70		*val = v & INDIRECT_DATA_MASK;
    71	
    72		return 0;
    73	}
    74	
    75	static int indirect_bus_reg_write(void *context, unsigned int reg,
    76					  unsigned int val)
    77	{
    78		void __iomem *base = context;
    79		int loops;
    80	
    81		writeq(val, base + INDIRECT_WR_DATA);
    82		writeq((reg >> 2) | INDIRECT_WR, base + INDIRECT_ADDR);
    83	
    84		loops = 0;
    85		while ((readq(base + INDIRECT_ADDR) & INDIRECT_WR) &&
    86		       (loops++ < INDIRECT_TIMEOUT))
    87			cpu_relax();
    88	
    89		if (loops >= INDIRECT_TIMEOUT) {
    90			pr_err("%s timed out %d\n", __func__, loops);
    91			return -ETIME;
    92		}
    93		return 0;
    94	}
    95	
    96	static const struct regmap_config indirect_regbus_cfg = {
    97		.reg_bits = 32,
    98		.reg_stride = 4,
    99		.val_bits = 32,
   100		.fast_io = true,
   101		.max_register = 24,
   102	
   103		.reg_write = indirect_bus_reg_write,
   104		.reg_read = indirect_bus_reg_read,
   105	};
   106	
   107	static struct spi_board_info m10_bmc_info = {
   108		.modalias = "m10-d5005",
   109		.max_speed_hz = 12500000,
   110		.bus_num = 0,
   111		.chip_select = 0,
   112	};
   113	
   114	static void config_spi_master(void __iomem *base, struct spi_master *master)
   115	{
   116		u64 v;
   117	
   118		v = readq(base + SPI_CORE_PARAMETER);
   119	
   120		master->mode_bits = SPI_CS_HIGH;
   121		if (FIELD_GET(CLK_POLARITY, v))
   122			master->mode_bits |= SPI_CPOL;
   123		if (FIELD_GET(CLK_PHASE, v))
   124			master->mode_bits |= SPI_CPHA;
   125	
   126		master->num_chipselect = FIELD_GET(NUM_CHIPSELECT, v);
   127		master->bits_per_word_mask =
   128			SPI_BPW_RANGE_MASK(1, FIELD_GET(DATA_WIDTH, v));
   129	}
   130	
   131	static int dfl_spi_altera_probe(struct dfl_device *dfl_dev)
   132	{
   133		struct device *dev = &dfl_dev->dev;
   134		struct spi_master *master;
   135		struct altera_spi *hw;
   136		void __iomem *base;
   137		int err = -ENODEV;
   138	
   139		master = spi_alloc_master(dev, sizeof(struct altera_spi));
   140		if (!master)
   141			return -ENOMEM;
   142	
   143		master->bus_num = dfl_dev->id;
   144	
   145		hw = spi_master_get_devdata(master);
   146	
   147		hw->dev = dev;
   148	
   149		base = devm_ioremap_resource(dev, &dfl_dev->mmio_res);
   150	
   151		if (IS_ERR(base)) {
   152			dev_err(dev, "%s get mem resource fail!\n", __func__);
   153			return PTR_ERR(base);
   154		}
   155	
   156		config_spi_master(base, master);
   157		dev_dbg(dev, "%s cs %u bpm 0x%x mode 0x%x\n", __func__,
   158			master->num_chipselect, master->bits_per_word_mask,
   159			master->mode_bits);
   160	
 > 161		hw->regmap = devm_regmap_init(dev, NULL, base, &indirect_regbus_cfg);
   162		if (IS_ERR(hw->regmap))
   163			return PTR_ERR(hw->regmap);
   164	
   165		hw->irq = -EINVAL;
   166	
   167		altera_spi_init_master(master);
   168	
   169		err = devm_spi_register_master(dev, master);
   170		if (err) {
   171			dev_err(dev, "%s failed to register spi master %d\n", __func__, err);
   172			goto exit;
   173		}
   174	
   175		if (!spi_new_device(master,  &m10_bmc_info)) {
   176			dev_err(dev, "%s failed to create SPI device: %s\n",
   177				__func__, m10_bmc_info.modalias);
   178		}
   179	
   180		return 0;
   181	exit:
   182		spi_master_put(master);
   183		return err;
   184	}
   185	

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

Attachment: .config.gz
Description: application/gzip


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