linux-kernel - Re: [PATCH] serial: sh-sci: Fix length of scatterlist

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Message-ID: <201510202148.eD6cp8fN%fengguang.wu@intel.com>
Date:	Tue, 20 Oct 2015 21:15:38 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Cc:	kbuild-all@...org, gregkh@...uxfoundation.org, jslaby@...e.com,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-sh@...r.kernel.org,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: Re: [PATCH] serial: sh-sci: Fix length of scatterlist

Hi Yoshihiro,

[auto build test ERROR on tty/tty-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Yoshihiro-Shimoda/serial-sh-sci-Fix-length-of-scatterlist/20151020-201918
config: x86_64-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/tty/serial/sh-sci.c: In function 'sci_request_dma':
>> drivers/tty/serial/sh-sci.c:1440:4: error: implicit declaration of function 'sg_dma_length' [-Werror=implicit-function-declaration]
       sg_dma_length(sg) = s->buf_len_rx;
       ^
>> drivers/tty/serial/sh-sci.c:1440:22: error: lvalue required as left operand of assignment
       sg_dma_length(sg) = s->buf_len_rx;
                         ^
   cc1: some warnings being treated as errors

vim +/sg_dma_length +1440 drivers/tty/serial/sh-sci.c

  1434			for (i = 0; i < 2; i++) {
  1435				struct scatterlist *sg = &s->sg_rx[i];
  1436	
  1437				sg_init_table(sg, 1);
  1438				s->rx_buf[i] = buf;
  1439				sg_dma_address(sg) = dma;
> 1440				sg_dma_length(sg) = s->buf_len_rx;
  1441	
  1442				buf += s->buf_len_rx;
  1443				dma += s->buf_len_rx;

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