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

From: kernel test robot
Date: Fri Aug 05 2022 - 15:21:37 EST


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@xxxxxxxxx/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@xxxxxxxxx>

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@xxxxxxx>
:::::: CC: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>

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