linux-kernel - drivers/interconnect/qcom/icc-rpmh.c:132:28: sparse: sparse: incorrect type in assignment (different base types)

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Date:   Wed, 2 Dec 2020 22:27:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     David Dai <daidavid1@...eaurora.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Odelu Kukatla <okukatla@...eaurora.org>,
        Evan Green <evgreen@...omium.org>,
        Sibi Sankar <sibis@...eaurora.org>
Subject: drivers/interconnect/qcom/icc-rpmh.c:132:28: sparse: sparse:
 incorrect type in assignment (different base types)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   509a15421674b9e1a3e1916939d0d0efd3e578da
commit: 976daac4a1c581e5d5fd64047519fd6fcde39738 interconnect: qcom: Consolidate interconnect RPMh support
date:   9 months ago
config: arm64-randconfig-s032-20201202 (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=976daac4a1c581e5d5fd64047519fd6fcde39738
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 976daac4a1c581e5d5fd64047519fd6fcde39738
        # 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/interconnect/qcom/icc-rpmh.c:132:28: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le32 [usertype] unit @@     got unsigned int [usertype] @@
   drivers/interconnect/qcom/icc-rpmh.c:132:28: sparse:     expected restricted __le32 [usertype] unit
   drivers/interconnect/qcom/icc-rpmh.c:132:28: sparse:     got unsigned int [usertype]
>> drivers/interconnect/qcom/icc-rpmh.c:133:29: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le16 [usertype] width @@     got unsigned short [usertype] @@
   drivers/interconnect/qcom/icc-rpmh.c:133:29: sparse:     expected restricted __le16 [usertype] width
   drivers/interconnect/qcom/icc-rpmh.c:133:29: sparse:     got unsigned short [usertype]

vim +132 drivers/interconnect/qcom/icc-rpmh.c

    94	
    95	/**
    96	 * qcom_icc_bcm_init - populates bcm aux data and connect qnodes
    97	 * @bcm: bcm to be initialized
    98	 * @dev: associated provider device
    99	 *
   100	 * Return: 0 on success, or an error code otherwise
   101	 */
   102	int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev)
   103	{
   104		struct qcom_icc_node *qn;
   105		const struct bcm_db *data;
   106		size_t data_count;
   107		int i;
   108	
   109		/* BCM is already initialised*/
   110		if (bcm->addr)
   111			return 0;
   112	
   113		bcm->addr = cmd_db_read_addr(bcm->name);
   114		if (!bcm->addr) {
   115			dev_err(dev, "%s could not find RPMh address\n",
   116				bcm->name);
   117			return -EINVAL;
   118		}
   119	
   120		data = cmd_db_read_aux_data(bcm->name, &data_count);
   121		if (IS_ERR(data)) {
   122			dev_err(dev, "%s command db read error (%ld)\n",
   123				bcm->name, PTR_ERR(data));
   124			return PTR_ERR(data);
   125		}
   126		if (!data_count) {
   127			dev_err(dev, "%s command db missing or partial aux data\n",
   128				bcm->name);
   129			return -EINVAL;
   130		}
   131	
 > 132		bcm->aux_data.unit = le32_to_cpu(data->unit);
 > 133		bcm->aux_data.width = le16_to_cpu(data->width);
   134		bcm->aux_data.vcd = data->vcd;
   135		bcm->aux_data.reserved = data->reserved;
   136		INIT_LIST_HEAD(&bcm->list);
   137		INIT_LIST_HEAD(&bcm->ws_list);
   138	
   139		/* Link Qnodes to their respective BCMs */
   140		for (i = 0; i < bcm->num_nodes; i++) {
   141			qn = bcm->nodes[i];
   142			qn->bcms[qn->num_bcms] = bcm;
   143			qn->num_bcms++;
   144		}
   145	
   146		return 0;
   147	}
   148	EXPORT_SYMBOL_GPL(qcom_icc_bcm_init);
   149	

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

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