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    Subjectdrivers/remoteproc/ti_k3_r5_remoteproc.c:711:17: sparse: sparse: cast removes address space '__iomem' of expression
    tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
    head: 0983f6bf2bfc0789b51ddf7315f644ff4da50acb
    commit: 1168af40b1ad8cb2e78f4a70869fa4a076320e4f remoteproc: k3-r5: Add support for IPC-only mode for all R5Fs
    date: 11 months ago
    config: arm64-randconfig-s043-20230208 (https://download.01.org/0day-ci/archive/20230209/202302090952.7jjbsmUl-lkp@intel.com/config)
    compiler: aarch64-linux-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=1168af40b1ad8cb2e78f4a70869fa4a076320e4f
    git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
    git fetch --no-tags linus master
    git checkout 1168af40b1ad8cb2e78f4a70869fa4a076320e4f
    # save the config file
    mkdir build_dir && cp config build_dir/.config
    COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 olddefconfig
    COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/infiniband/hw/hns/ drivers/remoteproc/

    If you fix the issue, kindly add following tag where applicable
    | Reported-by: kernel test robot <lkp@intel.com>
    | Link: https://lore.kernel.org/oe-kbuild-all/202302090952.7jjbsmUl-lkp@intel.com

    sparse warnings: (new ones prefixed by >>)
    drivers/remoteproc/ti_k3_r5_remoteproc.c:476:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void * @@ got void [noderef] __iomem *cpu_addr @@
    drivers/remoteproc/ti_k3_r5_remoteproc.c:476:28: sparse: expected void *
    drivers/remoteproc/ti_k3_r5_remoteproc.c:476:28: sparse: got void [noderef] __iomem *cpu_addr
    drivers/remoteproc/ti_k3_r5_remoteproc.c:479:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void * @@ got void [noderef] __iomem *cpu_addr @@
    drivers/remoteproc/ti_k3_r5_remoteproc.c:479:28: sparse: expected void *
    drivers/remoteproc/ti_k3_r5_remoteproc.c:479:28: sparse: got void [noderef] __iomem *cpu_addr
    >> drivers/remoteproc/ti_k3_r5_remoteproc.c:711:17: sparse: sparse: cast removes address space '__iomem' of expression

    vim +/__iomem +711 drivers/remoteproc/ti_k3_r5_remoteproc.c

    681
    682 /*
    683 * This function implements the .get_loaded_rsc_table() callback and is used
    684 * to provide the resource table for the booted R5F in IPC-only mode. The K3 R5F
    685 * firmwares follow a design-by-contract approach and are expected to have the
    686 * resource table at the base of the DDR region reserved for firmware usage.
    687 * This provides flexibility for the remote processor to be booted by different
    688 * bootloaders that may or may not have the ability to publish the resource table
    689 * address and size through a DT property. This callback is invoked only in
    690 * IPC-only mode.
    691 */
    692 static struct resource_table *k3_r5_get_loaded_rsc_table(struct rproc *rproc,
    693 size_t *rsc_table_sz)
    694 {
    695 struct k3_r5_rproc *kproc = rproc->priv;
    696 struct device *dev = kproc->dev;
    697
    698 if (!kproc->rmem[0].cpu_addr) {
    699 dev_err(dev, "memory-region #1 does not exist, loaded rsc table can't be found");
    700 return ERR_PTR(-ENOMEM);
    701 }
    702
    703 /*
    704 * NOTE: The resource table size is currently hard-coded to a maximum
    705 * of 256 bytes. The most common resource table usage for K3 firmwares
    706 * is to only have the vdev resource entry and an optional trace entry.
    707 * The exact size could be computed based on resource table address, but
    708 * the hard-coded value suffices to support the IPC-only mode.
    709 */
    710 *rsc_table_sz = 256;
    > 711 return (struct resource_table *)kproc->rmem[0].cpu_addr;
    712 }
    713

    --
    0-DAY CI Kernel Test Service
    https://github.com/intel/lkp-tests

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