netdev - Re: [PATCH net-next 1/2] cxgb4: rework on-chip memory read

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Message-ID: <201801160933.dVCWbUfA%fengguang.wu@intel.com>
Date:   Tue, 16 Jan 2018 09:59:27 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org, davem@...emloft.net,
        ganeshgr@...lsio.com, nirranjan@...lsio.com, indranil@...lsio.com,
        Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
Subject: Re: [PATCH net-next 1/2] cxgb4: rework on-chip memory read

Hi Rahul,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Rahul-Lakkireddy/cxgb4-rework-on-chip-memory-read/20180116-050826
reproduce:
        # apt-get install sparse
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> drivers/net/ethernet/chelsio/cxgb4/cudbg_intrinsic.c:29:14: sparse: incorrect type in assignment (different base types) @@ expected restricted __be32 <noident> @@ got unsignrestricted __be32 <noident> @@
   drivers/net/ethernet/chelsio/cxgb4/cudbg_intrinsic.c:29:14: expected restricted __be32 <noident>
   drivers/net/ethernet/chelsio/cxgb4/cudbg_intrinsic.c:29:14: got unsigned int <noident>

vim +29 drivers/net/ethernet/chelsio/cxgb4/cudbg_intrinsic.c

    21	
    22	unsigned int cudbg_mem_read_def(struct cudbg_init *pdbg_init,
    23					u32 start, u32 offset, u32 size,
    24					u32 mem_aperture, u8 *outbuf)
    25	{
    26		struct adapter *adap = pdbg_init->adap;
    27		__be32 *buf = (__be32 *)outbuf;
    28	
  > 29		*buf = le32_to_cpu((__force __le32)
    30				   t4_read_reg(adap, start + offset));
    31	
    32		return sizeof(__be32);
    33	}
    34	

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