[smfrench-smb3:for-next 3/4] fs/cifs/connect.c:220:1: warning: no previous prototype for 'cifs_abort_connection'

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

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tree:   git://github.com/smfrench/smb3-kernel.git for-next
head:   cf16d89f370730b5169ffc9f39a4a263dc6a3cf4
commit: 6b67a1be0316ddc1c6dbfc8cdfbb419fee341f61 [3/4] cifs: mark sessions for reconnection in helper function
config: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20220209/202202090904.E1cctEXS-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/smfrench/smb3-kernel/commit/6b67a1be0316ddc1c6dbfc8cdfbb419fee341f61
        git remote add smfrench-smb3 git://github.com/smfrench/smb3-kernel.git
        git fetch --no-tags smfrench-smb3 for-next
        git checkout 6b67a1be0316ddc1c6dbfc8cdfbb419fee341f61
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/cifs/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> fs/cifs/connect.c:220:1: warning: no previous prototype for 'cifs_abort_connection' [-Wmissing-prototypes]
     220 | cifs_abort_connection(struct TCP_Server_Info *server)
         | ^~~~~~~~~~~~~~~~~~~~~


vim +/cifs_abort_connection +220 fs/cifs/connect.c

   218	
   219	void
 > 220	cifs_abort_connection(struct TCP_Server_Info *server)
   221	{
   222		struct mid_q_entry *mid, *nmid;
   223		struct list_head retry_list;
   224	
   225		server->maxBuf = 0;
   226		server->max_read = 0;
   227	
   228		/* do not want to be sending data on a socket we are freeing */
   229		cifs_dbg(FYI, "%s: tearing down socket\n", __func__);
   230		mutex_lock(&server->srv_mutex);
   231		if (server->ssocket) {
   232			cifs_dbg(FYI, "State: 0x%x Flags: 0x%lx\n", server->ssocket->state,
   233				 server->ssocket->flags);
   234			kernel_sock_shutdown(server->ssocket, SHUT_WR);
   235			cifs_dbg(FYI, "Post shutdown state: 0x%x Flags: 0x%lx\n", server->ssocket->state,
   236				 server->ssocket->flags);
   237			sock_release(server->ssocket);
   238			server->ssocket = NULL;
   239		}
   240		server->sequence_number = 0;
   241		server->session_estab = false;
   242		kfree(server->session_key.response);
   243		server->session_key.response = NULL;
   244		server->session_key.len = 0;
   245		server->lstrp = jiffies;
   246	
   247		/* mark submitted MIDs for retry and issue callback */
   248		INIT_LIST_HEAD(&retry_list);
   249		cifs_dbg(FYI, "%s: moving mids to private list\n", __func__);
   250		spin_lock(&GlobalMid_Lock);
   251		list_for_each_entry_safe(mid, nmid, &server->pending_mid_q, qhead) {
   252			kref_get(&mid->refcount);
   253			if (mid->mid_state == MID_REQUEST_SUBMITTED)
   254				mid->mid_state = MID_RETRY_NEEDED;
   255			list_move(&mid->qhead, &retry_list);
   256			mid->mid_flags |= MID_DELETED;
   257		}
   258		spin_unlock(&GlobalMid_Lock);
   259		mutex_unlock(&server->srv_mutex);
   260	
   261		cifs_dbg(FYI, "%s: issuing mid callbacks\n", __func__);
   262		list_for_each_entry_safe(mid, nmid, &retry_list, qhead) {
   263			list_del_init(&mid->qhead);
   264			mid->callback(mid);
   265			cifs_mid_q_entry_release(mid);
   266		}
   267	
   268		if (cifs_rdma_enabled(server)) {
   269			mutex_lock(&server->srv_mutex);
   270			smbd_destroy(server);
   271			mutex_unlock(&server->srv_mutex);
   272		}
   273	}
   274	

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