linux-kernel - drivers/remoteproc/rcar_rproc.c:45:20: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <202312072159.2k3mbRlb-lkp@intel.com>
Date:   Thu, 7 Dec 2023 21:39:54 +0800
From:   kernel test robot <lkp@...el.com>
To:     Julien Massot <julien.massot@....bzh>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: drivers/remoteproc/rcar_rproc.c:45:20: 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:   bee0e7762ad2c6025b9f5245c040fcc36ef2bde8
commit: 285892a74f1370a12249f765c6a4e3b16194852e remoteproc: Add Renesas rcar driver
date:   2 years ago
config: mips-randconfig-r122-20231108 (https://download.01.org/0day-ci/archive/20231207/202312072159.2k3mbRlb-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231207/202312072159.2k3mbRlb-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/202312072159.2k3mbRlb-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/remoteproc/rcar_rproc.c:28:12: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *va @@     got void [noderef] __iomem * @@
   drivers/remoteproc/rcar_rproc.c:28:12: sparse:     expected void *va
   drivers/remoteproc/rcar_rproc.c:28:12: sparse:     got void [noderef] __iomem *
>> drivers/remoteproc/rcar_rproc.c:45:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void *va @@
   drivers/remoteproc/rcar_rproc.c:45:20: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/remoteproc/rcar_rproc.c:45:20: sparse:     got void *va

vim +45 drivers/remoteproc/rcar_rproc.c

    20	
    21	static int rcar_rproc_mem_alloc(struct rproc *rproc,
    22					 struct rproc_mem_entry *mem)
    23	{
    24		struct device *dev = &rproc->dev;
    25		void *va;
    26	
    27		dev_dbg(dev, "map memory: %pa+%zx\n", &mem->dma, mem->len);
  > 28		va = ioremap_wc(mem->dma, mem->len);
    29		if (!va) {
    30			dev_err(dev, "Unable to map memory region: %pa+%zx\n",
    31				&mem->dma, mem->len);
    32			return -ENOMEM;
    33		}
    34	
    35		/* Update memory entry va */
    36		mem->va = va;
    37	
    38		return 0;
    39	}
    40	
    41	static int rcar_rproc_mem_release(struct rproc *rproc,
    42					   struct rproc_mem_entry *mem)
    43	{
    44		dev_dbg(&rproc->dev, "unmap memory: %pa\n", &mem->dma);
  > 45		iounmap(mem->va);
    46	
    47		return 0;
    48	}
    49	

-- 
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https://github.com/intel/lkp-tests/wiki