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

kernel test robot
2022-08-30T04:33:07Z

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/20220830/202208301242.YC5114Ec-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@intel.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@st.com>
:::::: CC: Bjorn Andersson <bjorn.andersson@linaro.org>

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