linux-kernel - drivers/remoteproc/ti_k3_r5_remoteproc.c:377:28: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Date:   Wed, 9 Dec 2020 20:02:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     Suman Anna <s-anna@...com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: drivers/remoteproc/ti_k3_r5_remoteproc.c:377:28: 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:   a68a0262abdaa251e12c53715f48e698a18ef402
commit: 34f2653686fecc9bd5a4ee16724768c72953fb57 remoteproc: k3-r5: Initialize TCM memories for ECC
date:   8 weeks ago
config: arm64-randconfig-s031-20201209 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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: v0.6.3-179-ga00755aa-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34f2653686fecc9bd5a4ee16724768c72953fb57
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 34f2653686fecc9bd5a4ee16724768c72953fb57
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


"sparse warnings: (new ones prefixed by >>)"
>> drivers/remoteproc/ti_k3_r5_remoteproc.c:377:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *p @@     got void [noderef] __iomem *cpu_addr @@
   drivers/remoteproc/ti_k3_r5_remoteproc.c:377:28: sparse:     expected void *p
   drivers/remoteproc/ti_k3_r5_remoteproc.c:377:28: sparse:     got void [noderef] __iomem *cpu_addr
   drivers/remoteproc/ti_k3_r5_remoteproc.c:380:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *p @@     got void [noderef] __iomem *cpu_addr @@
   drivers/remoteproc/ti_k3_r5_remoteproc.c:380:28: sparse:     expected void *p
   drivers/remoteproc/ti_k3_r5_remoteproc.c:380:28: sparse:     got void [noderef] __iomem *cpu_addr

vim +377 drivers/remoteproc/ti_k3_r5_remoteproc.c

   346	
   347	/*
   348	 * The R5F cores have controls for both a reset and a halt/run. The code
   349	 * execution from DDR requires the initial boot-strapping code to be run
   350	 * from the internal TCMs. This function is used to release the resets on
   351	 * applicable cores to allow loading into the TCMs. The .prepare() ops is
   352	 * invoked by remoteproc core before any firmware loading, and is followed
   353	 * by the .start() ops after loading to actually let the R5 cores run.
   354	 */
   355	static int k3_r5_rproc_prepare(struct rproc *rproc)
   356	{
   357		struct k3_r5_rproc *kproc = rproc->priv;
   358		struct k3_r5_cluster *cluster = kproc->cluster;
   359		struct k3_r5_core *core = kproc->core;
   360		struct device *dev = kproc->dev;
   361		int ret;
   362	
   363		ret = (cluster->mode == CLUSTER_MODE_LOCKSTEP) ?
   364			k3_r5_lockstep_release(cluster) : k3_r5_split_release(core);
   365		if (ret) {
   366			dev_err(dev, "unable to enable cores for TCM loading, ret = %d\n",
   367				ret);
   368			return ret;
   369		}
   370	
   371		/*
   372		 * Zero out both TCMs unconditionally (access from v8 Arm core is not
   373		 * affected by ATCM & BTCM enable configuration values) so that ECC
   374		 * can be effective on all TCM addresses.
   375		 */
   376		dev_dbg(dev, "zeroing out ATCM memory\n");
 > 377		memset(core->mem[0].cpu_addr, 0x00, core->mem[0].size);
   378	
   379		dev_dbg(dev, "zeroing out BTCM memory\n");
   380		memset(core->mem[1].cpu_addr, 0x00, core->mem[1].size);
   381	
   382		return 0;
   383	}
   384	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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