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* [hch-block:blkdev.h-includes 15/16] drivers/mmc/core/sd.c:1016:21: error: variable has incomplete type 'struct scatterlist'
@ 2021-07-25  8:21 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-07-25  8:21 UTC (permalink / raw)
  To: Christoph Hellwig; +Cc: clang-built-linux, kbuild-all, linux-kernel

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tree:   git://git.infradead.org/users/hch/block.git blkdev.h-includes
head:   db08f634bead64da6de80830782f3c339fc41b11
commit: 9571c3f0ec1966546513f3be443b4abe3a7b4666 [15/16] block: move integrity handling out of blkdev.h
config: riscv-randconfig-r036-20210725 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c63dbd850182797bc4b76124d08e1c320ab2365d)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        git remote add hch-block git://git.infradead.org/users/hch/block.git
        git fetch --no-tags hch-block blkdev.h-includes
        git checkout 9571c3f0ec1966546513f3be443b4abe3a7b4666
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=riscv SHELL=/bin/bash drivers/mmc/core/

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

All errors (new ones prefixed by >>):

>> drivers/mmc/core/sd.c:1016:21: error: variable has incomplete type 'struct scatterlist'
           struct scatterlist sg;
                              ^
   include/linux/mmc/core.h:139:9: note: forward declaration of 'struct scatterlist'
           struct scatterlist      *sg;            /* I/O scatter list */
                  ^
>> drivers/mmc/core/sd.c:1045:2: error: implicit declaration of function 'sg_init_one' [-Werror,-Wimplicit-function-declaration]
           sg_init_one(&sg, reg_buf, 512);
           ^
   2 errors generated.


vim +1016 drivers/mmc/core/sd.c

6a11fc47f175c8 Adrian Hunter 2017-09-25  1008  
2c5d4276903804 Ulf Hansson   2021-05-04  1009  static int sd_write_ext_reg(struct mmc_card *card, u8 fno, u8 page, u16 offset,
2c5d4276903804 Ulf Hansson   2021-05-04  1010  			    u8 reg_data)
2c5d4276903804 Ulf Hansson   2021-05-04  1011  {
2c5d4276903804 Ulf Hansson   2021-05-04  1012  	struct mmc_host *host = card->host;
2c5d4276903804 Ulf Hansson   2021-05-04  1013  	struct mmc_request mrq = {};
2c5d4276903804 Ulf Hansson   2021-05-04  1014  	struct mmc_command cmd = {};
2c5d4276903804 Ulf Hansson   2021-05-04  1015  	struct mmc_data data = {};
2c5d4276903804 Ulf Hansson   2021-05-04 @1016  	struct scatterlist sg;
2c5d4276903804 Ulf Hansson   2021-05-04  1017  	u8 *reg_buf;
2c5d4276903804 Ulf Hansson   2021-05-04  1018  
2c5d4276903804 Ulf Hansson   2021-05-04  1019  	reg_buf = kzalloc(512, GFP_KERNEL);
2c5d4276903804 Ulf Hansson   2021-05-04  1020  	if (!reg_buf)
2c5d4276903804 Ulf Hansson   2021-05-04  1021  		return -ENOMEM;
2c5d4276903804 Ulf Hansson   2021-05-04  1022  
2c5d4276903804 Ulf Hansson   2021-05-04  1023  	mrq.cmd = &cmd;
2c5d4276903804 Ulf Hansson   2021-05-04  1024  	mrq.data = &data;
2c5d4276903804 Ulf Hansson   2021-05-04  1025  
2c5d4276903804 Ulf Hansson   2021-05-04  1026  	/*
2c5d4276903804 Ulf Hansson   2021-05-04  1027  	 * Arguments of CMD49:
2c5d4276903804 Ulf Hansson   2021-05-04  1028  	 * [31:31] MIO (0 = memory).
2c5d4276903804 Ulf Hansson   2021-05-04  1029  	 * [30:27] FNO (function number).
2c5d4276903804 Ulf Hansson   2021-05-04  1030  	 * [26:26] MW - mask write mode (0 = disable).
2c5d4276903804 Ulf Hansson   2021-05-04  1031  	 * [25:18] page number.
2c5d4276903804 Ulf Hansson   2021-05-04  1032  	 * [17:9] offset address.
2c5d4276903804 Ulf Hansson   2021-05-04  1033  	 * [8:0] length (0 = 1 byte).
2c5d4276903804 Ulf Hansson   2021-05-04  1034  	 */
2c5d4276903804 Ulf Hansson   2021-05-04  1035  	cmd.arg = fno << 27 | page << 18 | offset << 9;
2c5d4276903804 Ulf Hansson   2021-05-04  1036  
2c5d4276903804 Ulf Hansson   2021-05-04  1037  	/* The first byte in the buffer is the data to be written. */
2c5d4276903804 Ulf Hansson   2021-05-04  1038  	reg_buf[0] = reg_data;
2c5d4276903804 Ulf Hansson   2021-05-04  1039  
2c5d4276903804 Ulf Hansson   2021-05-04  1040  	data.flags = MMC_DATA_WRITE;
2c5d4276903804 Ulf Hansson   2021-05-04  1041  	data.blksz = 512;
2c5d4276903804 Ulf Hansson   2021-05-04  1042  	data.blocks = 1;
2c5d4276903804 Ulf Hansson   2021-05-04  1043  	data.sg = &sg;
2c5d4276903804 Ulf Hansson   2021-05-04  1044  	data.sg_len = 1;
2c5d4276903804 Ulf Hansson   2021-05-04 @1045  	sg_init_one(&sg, reg_buf, 512);
2c5d4276903804 Ulf Hansson   2021-05-04  1046  
2c5d4276903804 Ulf Hansson   2021-05-04  1047  	cmd.opcode = SD_WRITE_EXTR_SINGLE;
2c5d4276903804 Ulf Hansson   2021-05-04  1048  	cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
2c5d4276903804 Ulf Hansson   2021-05-04  1049  
2c5d4276903804 Ulf Hansson   2021-05-04  1050  	mmc_set_data_timeout(&data, card);
2c5d4276903804 Ulf Hansson   2021-05-04  1051  	mmc_wait_for_req(host, &mrq);
2c5d4276903804 Ulf Hansson   2021-05-04  1052  
2c5d4276903804 Ulf Hansson   2021-05-04  1053  	kfree(reg_buf);
2c5d4276903804 Ulf Hansson   2021-05-04  1054  
2c5d4276903804 Ulf Hansson   2021-05-04  1055  	/*
2c5d4276903804 Ulf Hansson   2021-05-04  1056  	 * Note that, the SD card is allowed to signal busy on DAT0 up to 1s
2c5d4276903804 Ulf Hansson   2021-05-04  1057  	 * after the CMD49. Although, let's leave this to be managed by the
2c5d4276903804 Ulf Hansson   2021-05-04  1058  	 * caller.
2c5d4276903804 Ulf Hansson   2021-05-04  1059  	 */
2c5d4276903804 Ulf Hansson   2021-05-04  1060  
2c5d4276903804 Ulf Hansson   2021-05-04  1061  	if (cmd.error)
2c5d4276903804 Ulf Hansson   2021-05-04  1062  		return cmd.error;
2c5d4276903804 Ulf Hansson   2021-05-04  1063  	if (data.error)
2c5d4276903804 Ulf Hansson   2021-05-04  1064  		return data.error;
2c5d4276903804 Ulf Hansson   2021-05-04  1065  
2c5d4276903804 Ulf Hansson   2021-05-04  1066  	return 0;
2c5d4276903804 Ulf Hansson   2021-05-04  1067  }
2c5d4276903804 Ulf Hansson   2021-05-04  1068  

:::::: The code at line 1016 was first introduced by commit
:::::: 2c5d42769038045b92160a849aad43c4b3170e2a mmc: core: Add support for Power Off Notification for SD cards

:::::: TO: Ulf Hansson <ulf.hansson@linaro.org>
:::::: CC: Ulf Hansson <ulf.hansson@linaro.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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