linux-kernel - [leon-rdma:rdma-next 15/40] drivers/infiniband/hw/hns/hns_roce_hw_v2.c:5805:5: warning: no previous prototype for 'hns_roce_v2_query

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Date:   Wed, 24 Aug 2022 02:46:11 +0800
From:   kernel test robot <lkp@...el.com>
To:     Wenpeng Liang <liangwenpeng@...wei.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Leon Romanovsky <leon@...nel.org>
Subject: [leon-rdma:rdma-next 15/40]
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c:5805:5: warning: no previous
 prototype for 'hns_roce_v2_query_mpt'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git rdma-next
head:   07c7704e6a8741b28f249e1f53c6c1f66b718687
commit: 436aa2aa24f6efe8f918709daa71f47d2d0713ae [15/40] RDMA/hns: Support MR's restrack raw ops for hns driver
config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20220824/202208240240.7nXzYHkq-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git/commit/?id=436aa2aa24f6efe8f918709daa71f47d2d0713ae
        git remote add leon-rdma https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git
        git fetch --no-tags leon-rdma rdma-next
        git checkout 436aa2aa24f6efe8f918709daa71f47d2d0713ae
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/infiniband/

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

All warnings (new ones prefixed by >>):

>> drivers/infiniband/hw/hns/hns_roce_hw_v2.c:5805:5: warning: no previous prototype for 'hns_roce_v2_query_mpt' [-Wmissing-prototypes]
    5805 | int hns_roce_v2_query_mpt(struct hns_roce_dev *hr_dev, u32 key, void *buffer)
         |     ^~~~~~~~~~~~~~~~~~~~~


vim +/hns_roce_v2_query_mpt +5805 drivers/infiniband/hw/hns/hns_roce_hw_v2.c

  5804	
> 5805	int hns_roce_v2_query_mpt(struct hns_roce_dev *hr_dev, u32 key, void *buffer)
  5806	{
  5807		struct hns_roce_v2_mpt_entry *context;
  5808		struct hns_roce_cmd_mailbox *mailbox;
  5809		int ret;
  5810	
  5811		mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
  5812		if (IS_ERR(mailbox))
  5813			return PTR_ERR(mailbox);
  5814	
  5815		context = mailbox->buf;
  5816		ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, HNS_ROCE_CMD_QUERY_MPT,
  5817					key_to_hw_index(key));
  5818		if (ret) {
  5819			ibdev_err(&hr_dev->ib_dev,
  5820				  "failed to process cmd when querying MPT, ret = %d.\n",
  5821				  ret);
  5822			goto err_mailbox;
  5823		}
  5824	
  5825		memcpy(buffer, context, sizeof(*context));
  5826	
  5827	err_mailbox:
  5828		hns_roce_free_cmd_mailbox(hr_dev, mailbox);
  5829	
  5830		return ret;
  5831	}
  5832	

-- 
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https://01.org/lkp