drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:570:21: sparse: sparse: cast to restricted __be32

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   eccc876724927ff3b9ff91f36f7b6b159e948f0c
commit: 088c5f0d1a7c7f01e668d9d2d75e7d93b43b7690 hinic: add generating mailbox random index support
date:   3 months ago
config: arm64-randconfig-s031-20201110 (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: v0.6.3-76-gf680124b-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=088c5f0d1a7c7f01e668d9d2d75e7d93b43b7690
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 088c5f0d1a7c7f01e668d9d2d75e7d93b43b7690
        # 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@intel.com>


"sparse warnings: (new ones prefixed by >>)"
>> drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:570:21: sparse: sparse: cast to restricted __be32
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:648:54: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got unsigned char [usertype] * @@
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:648:54: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:648:54: sparse:     got unsigned char [usertype] *
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:671:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got unsigned char [usertype] * @@
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:671:58: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:671:58: sparse:     got unsigned char [usertype] *
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:723:22: sparse: sparse: cast to restricted __be64
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:1164:25: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected unsigned char [usertype] *data @@     got void [noderef] __iomem * @@
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:1164:25: sparse:     expected unsigned char [usertype] *data
   drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c:1164:25: sparse:     got void [noderef] __iomem *

vim +570 drivers/net/ethernet/huawei/hinic/hinic_hw_mbox.c

   541	
   542	static bool check_vf_mbox_random_id(struct hinic_mbox_func_to_func *func_to_func,
   543					    u8 *header)
   544	{
   545		struct hinic_hwdev *hwdev = func_to_func->hwdev;
   546		struct hinic_mbox_work *mbox_work = NULL;
   547		u64 mbox_header = *((u64 *)header);
   548		u16 offset, src;
   549		u32 random_id;
   550		int vf_in_pf;
   551	
   552		src = HINIC_MBOX_HEADER_GET(mbox_header, SRC_GLB_FUNC_IDX);
   553	
   554		if (IS_PF_OR_PPF_SRC(src) || !func_to_func->support_vf_random)
   555			return true;
   556	
   557		if (!HINIC_IS_PPF(hwdev->hwif)) {
   558			offset = hinic_glb_pf_vf_offset(hwdev->hwif);
   559			vf_in_pf = src - offset;
   560	
   561			if (vf_in_pf < 1 || vf_in_pf > hwdev->nic_cap.max_vf) {
   562				dev_warn(&hwdev->hwif->pdev->dev,
   563					 "Receive vf id(0x%x) is invalid, vf id should be from 0x%x to 0x%x\n",
   564					 src, offset + 1,
   565					 hwdev->nic_cap.max_vf + offset);
   566				return false;
   567			}
   568		}
   569	
 > 570		random_id = be32_to_cpu(*(u32 *)(header + MBOX_SEG_LEN +
   571						 MBOX_HEADER_SZ));
   572	
   573		if (random_id == func_to_func->vf_mbx_rand_id[src] ||
   574		    random_id == func_to_func->vf_mbx_old_rand_id[src])
   575			return true;
   576	
   577		dev_warn(&hwdev->hwif->pdev->dev,
   578			 "The mailbox random id(0x%x) of func_id(0x%x) doesn't match with pf reservation(0x%x)\n",
   579			 random_id, src, func_to_func->vf_mbx_rand_id[src]);
   580	
   581		mbox_work = kzalloc(sizeof(*mbox_work), GFP_KERNEL);
   582		if (!mbox_work)
   583			return false;
   584	
   585		mbox_work->func_to_func = func_to_func;
   586		mbox_work->src_func_idx = src;
   587	
   588		INIT_WORK(&mbox_work->work, update_random_id_work_handler);
   589		queue_work(func_to_func->workq, &mbox_work->work);
   590	
   591		return false;
   592	}
   593	

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

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