linux-kernel - drivers/edac/versal_edac.c:745:21: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Date:   Fri, 10 Nov 2023 02:49:19 +0800
From:   kernel test robot <lkp@...el.com>
To:     Shubhrajyoti Datta <shubhrajyoti.datta@....com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        "Borislav Petkov (AMD)" <bp@...en8.de>,
        Sai Krishna Potthuri <sai.krishna.potthuri@....com>
Subject: drivers/edac/versal_edac.c:745:21: sparse: sparse: incorrect type in
 argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6bc986ab839c844e78a2333a02e55f02c9e57935
commit: 6f15b178cd6315c997981f76c6ebed7ad39144c5 EDAC/versal: Add a Xilinx Versal memory controller driver
date:   2 weeks ago
config: arm64-randconfig-r121-20231109 (https://download.01.org/0day-ci/archive/20231110/202311100254.i2Rgql3X-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231110/202311100254.i2Rgql3X-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311100254.i2Rgql3X-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/edac/versal_edac.c:745:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected char const * @@     got char const [noderef] __user *data @@
   drivers/edac/versal_edac.c:745:21: sparse:     expected char const *
   drivers/edac/versal_edac.c:745:21: sparse:     got char const [noderef] __user *data

vim +745 drivers/edac/versal_edac.c

   736	
   737	static ssize_t xddr_inject_data_poison_store(struct mem_ctl_info *mci,
   738						     const char __user *data)
   739	{
   740		struct edac_priv *priv = mci->pvt_info;
   741	
   742		writel(0, priv->ddrmc_baseaddr + ECCW0_FLIP0_OFFSET);
   743		writel(0, priv->ddrmc_baseaddr + ECCW1_FLIP0_OFFSET);
   744	
 > 745		if (strncmp(data, "CE", 2) == 0) {
   746			writel(ECC_CEPOISON_MASK, priv->ddrmc_baseaddr +
   747			       ECCW0_FLIP0_OFFSET);
   748			writel(ECC_CEPOISON_MASK, priv->ddrmc_baseaddr +
   749			       ECCW1_FLIP0_OFFSET);
   750		} else {
   751			writel(ECC_UEPOISON_MASK, priv->ddrmc_baseaddr +
   752			       ECCW0_FLIP0_OFFSET);
   753			writel(ECC_UEPOISON_MASK, priv->ddrmc_baseaddr +
   754			       ECCW1_FLIP0_OFFSET);
   755		}
   756	
   757		/* Lock the PCSR registers */
   758		writel(1, priv->ddrmc_baseaddr + XDDR_PCSR_OFFSET);
   759	
   760		return 0;
   761	}
   762	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki