linux-kernel - drivers/remoteproc/stm32_rproc.c:139:20: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Date:   Tue, 30 Aug 2022 14:27:17 +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/stm32_rproc.c:139:20: 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:   dcf8e5633e2e69ad60b730ab5905608b756a032f
commit: d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee ARM: mm: kill unused runtime hook arch_iounmap()
date:   9 weeks ago
config: arm-randconfig-s031-20220829 (https://download.01.org/0day-ci/archive/20220830/202208301441.pwlngzY0-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/stm32_rproc.c:122:12: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *va @@     got void [noderef] __iomem * @@
   drivers/remoteproc/stm32_rproc.c:122:12: sparse:     expected void *va
   drivers/remoteproc/stm32_rproc.c:122:12: sparse:     got void [noderef] __iomem *
>> drivers/remoteproc/stm32_rproc.c:139:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *io_addr @@     got void *va @@
   drivers/remoteproc/stm32_rproc.c:139:20: sparse:     expected void volatile [noderef] __iomem *io_addr
   drivers/remoteproc/stm32_rproc.c:139:20: sparse:     got void *va
   drivers/remoteproc/stm32_rproc.c:632:17: sparse: sparse: cast removes address space '__iomem' of expression

vim +139 drivers/remoteproc/stm32_rproc.c

13140de09cc2dd Fabien Dessenne 2019-05-14  134  
13140de09cc2dd Fabien Dessenne 2019-05-14  135  static int stm32_rproc_mem_release(struct rproc *rproc,
13140de09cc2dd Fabien Dessenne 2019-05-14  136  				   struct rproc_mem_entry *mem)
13140de09cc2dd Fabien Dessenne 2019-05-14  137  {
13140de09cc2dd Fabien Dessenne 2019-05-14  138  	dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma);
13140de09cc2dd Fabien Dessenne 2019-05-14 @139  	iounmap(mem->va);
13140de09cc2dd Fabien Dessenne 2019-05-14  140  
13140de09cc2dd Fabien Dessenne 2019-05-14  141  	return 0;
13140de09cc2dd Fabien Dessenne 2019-05-14  142  }
13140de09cc2dd Fabien Dessenne 2019-05-14  143  

:::::: The code at line 139 was first introduced by commit
:::::: 13140de09cc2dd5e5166ad42292bb82af4e23cef remoteproc: stm32: add an ST stm32_rproc driver

:::::: TO: Fabien Dessenne <fabien.dessenne@...com>
:::::: CC: Bjorn Andersson <bjorn.andersson@...aro.org>

-- 
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https://01.org/lkp