linux-kernel - Re: [PATCH v2] NTB: ntb_pp: Add full multi-port NTB API support

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Date:   Mon, 4 Dec 2017 04:26:12 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     kbuild-all@...org, jdmason@...zu.us, dave.jiang@...el.com,
        Allen.Hubbe@....com, Shyam-sundar.S-k@....com,
        Xiangliang.Yu@....com, Sergey.Semin@...latforms.ru,
        linux-ntb@...glegroups.com, linux-kernel@...r.kernel.org,
        Serge Semin <fancer.lancer@...il.com>
Subject: Re: [PATCH v2] NTB: ntb_pp: Add full multi-port NTB API support

Hi Serge,

I love your patch! Yet something to improve:

[auto build test ERROR on v4.15-rc1]
[cannot apply to ntb/ntb-next next-20171201]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Serge-Semin/NTB-ntb_pp-Add-full-multi-port-NTB-API-support/20171204-025207
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

   drivers/ntb/test/ntb_pingpong.c: In function 'pp_ping':
>> drivers/ntb/test/ntb_pingpong.c:185:2: error: implicit declaration of function 'ntb_peer_msg_write' [-Werror=implicit-function-declaration]
     ntb_peer_msg_write(pp->ntb, pp->out_pidx, 0, count);
     ^
   drivers/ntb/test/ntb_pingpong.c: In function 'pp_pong':
   drivers/ntb/test/ntb_pingpong.c:202:13: warning: passing argument 2 of 'ntb_msg_read' makes integer from pointer without a cast
     msg_data = ntb_msg_read(pp->ntb, &pidx, 0);
                ^
   In file included from drivers/ntb/test/ntb_pingpong.c:85:0:
   include/linux/ntb.h:1473:19: note: expected 'int' but argument is of type 'int *'
    static inline int ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx,
                      ^
   drivers/ntb/test/ntb_pingpong.c:202:13: error: too few arguments to function 'ntb_msg_read'
     msg_data = ntb_msg_read(pp->ntb, &pidx, 0);
                ^
   In file included from drivers/ntb/test/ntb_pingpong.c:85:0:
   include/linux/ntb.h:1473:19: note: declared here
    static inline int ntb_msg_read(struct ntb_dev *ntb, int midx, int *pidx,
                      ^
   cc1: some warnings being treated as errors

vim +/ntb_peer_msg_write +185 drivers/ntb/test/ntb_pingpong.c

   176	
   177	static void pp_ping(struct pp_ctx *pp)
   178	{
   179		u32 count;
   180	
   181		count = atomic_read(&pp->count);
   182	
   183		spin_lock(&pp->lock);
   184		ntb_peer_spad_write(pp->ntb, pp->out_pidx, 0, count);
 > 185		ntb_peer_msg_write(pp->ntb, pp->out_pidx, 0, count);
   186	
   187		dev_dbg(&pp->ntb->dev, "Ping port %d spad %#x, msg %#x\n",
   188			ntb_peer_port_number(pp->ntb, pp->out_pidx), count, count);
   189	
   190		ntb_peer_db_set(pp->ntb, pp->out_db);
   191		ntb_db_clear_mask(pp->ntb, pp->in_db);
   192		spin_unlock(&pp->lock);
   193	}
   194	

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