linux-kernel - drivers/remoteproc/qcom_common.c:126:27: sparse: sparse: restricted _

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Message-ID: <202104271523.yN7gH0mD-lkp@intel.com>
Date:   Tue, 27 Apr 2021 15:25:25 +0800
From:   kernel test robot <lkp@...el.com>
To:     Siddharth Gupta <sidgup@...eaurora.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rishabh Bhatnagar <rishabhb@...eaurora.org>,
        Gurbir Arora <gurbaror@...eaurora.org>
Subject: drivers/remoteproc/qcom_common.c:126:27: sparse: sparse: restricted
 __le32 degrades to integer

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4a0225c3d208cfa6e4550f2210ffd9114a952a81
commit: 8ed8485c4f056d488d17a2b56581c86aeb42955d remoteproc: qcom: Add capability to collect minidumps
date:   5 months ago
config: arm64-randconfig-s031-20210427 (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: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8ed8485c4f056d488d17a2b56581c86aeb42955d
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 8ed8485c4f056d488d17a2b56581c86aeb42955d
        # 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__' W=1 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/qcom_common.c:126:27: sparse: sparse: restricted __le32 degrades to integer
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast to restricted __le32
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast from restricted __le64
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast to restricted __le32
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast from restricted __le64
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast to restricted __le32
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast from restricted __le64
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast to restricted __le32
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast from restricted __le64
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast to restricted __le32
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast from restricted __le64
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast to restricted __le32
>> drivers/remoteproc/qcom_common.c:133:32: sparse: sparse: cast from restricted __le64

vim +126 drivers/remoteproc/qcom_common.c

   103	
   104	static int qcom_add_minidump_segments(struct rproc *rproc, struct minidump_subsystem *subsystem)
   105	{
   106		struct minidump_region __iomem *ptr;
   107		struct minidump_region region;
   108		int seg_cnt, i;
   109		dma_addr_t da;
   110		size_t size;
   111		char *name;
   112	
   113		if (WARN_ON(!list_empty(&rproc->dump_segments))) {
   114			dev_err(&rproc->dev, "dump segment list already populated\n");
   115			return -EUCLEAN;
   116		}
   117	
   118		seg_cnt = le32_to_cpu(subsystem->region_count);
   119		ptr = ioremap((unsigned long)le64_to_cpu(subsystem->regions_baseptr),
   120			      seg_cnt * sizeof(struct minidump_region));
   121		if (!ptr)
   122			return -EFAULT;
   123	
   124		for (i = 0; i < seg_cnt; i++) {
   125			memcpy_fromio(&region, ptr + i, sizeof(region));
 > 126			if (region.valid == MD_REGION_VALID) {
   127				name = kstrdup(region.name, GFP_KERNEL);
   128				if (!name) {
   129					iounmap(ptr);
   130					return -ENOMEM;
   131				}
   132				da = le64_to_cpu(region.address);
 > 133				size = le32_to_cpu(region.size);
   134				rproc_coredump_add_custom_segment(rproc, da, size, NULL, name);
   135			}
   136		}
   137	
   138		iounmap(ptr);
   139		return 0;
   140	}
   141	

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

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