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: <202208060349.qkwQPlqG-lkp@intel.com>
Date:   Sat, 6 Aug 2022 03:20:30 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Will Deacon <will@...nel.org>, Christoph Hellwig <hch@....de>,
        Arnd Bergmann <arnd@...db.de>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
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:   9e2f40233670c70c25e0681cb66d50d1e2742829
commit: d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee ARM: mm: kill unused runtime hook arch_iounmap()
date:   6 weeks ago
config: arm-randconfig-s041-20220805 (https://download.01.org/0day-ci/archive/20220806/202208060349.qkwQPlqG-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash drivers/remoteproc/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.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 volatile [noderef] __iomem *io_addr @@     got void *va @@
   drivers/remoteproc/rcar_rproc.c:45:20: sparse:     expected void volatile [noderef] __iomem *io_addr
   drivers/remoteproc/rcar_rproc.c:45:20: sparse:     got void *va

vim +45 drivers/remoteproc/rcar_rproc.c

285892a74f1370 Julien Massot 2021-12-07  40  
285892a74f1370 Julien Massot 2021-12-07  41  static int rcar_rproc_mem_release(struct rproc *rproc,
285892a74f1370 Julien Massot 2021-12-07  42  				   struct rproc_mem_entry *mem)
285892a74f1370 Julien Massot 2021-12-07  43  {
285892a74f1370 Julien Massot 2021-12-07  44  	dev_dbg(&rproc->dev, "unmap memory: %pa\n", &mem->dma);
285892a74f1370 Julien Massot 2021-12-07 @45  	iounmap(mem->va);
285892a74f1370 Julien Massot 2021-12-07  46  
285892a74f1370 Julien Massot 2021-12-07  47  	return 0;
285892a74f1370 Julien Massot 2021-12-07  48  }
285892a74f1370 Julien Massot 2021-12-07  49  

:::::: The code at line 45 was first introduced by commit
:::::: 285892a74f1370a12249f765c6a4e3b16194852e remoteproc: Add Renesas rcar driver

:::::: TO: Julien Massot <julien.massot@....bzh>
:::::: CC: Mathieu Poirier <mathieu.poirier@...aro.org>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp