linux-kernel - [axboe-block:perf-wip 13/20] drivers/block/rnbd/rnbd-clt.c:1226:27: error: initialization of 'int (*)(struct blk_mq_hw_ctx *, struct io_batch *)' from incompatible pointer type 'int (*)(struct blk_mq_hw

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Date:   Fri, 8 Oct 2021 23:12:55 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [axboe-block:perf-wip 13/20] drivers/block/rnbd/rnbd-clt.c:1226:27:
 error: initialization of 'int (*)(struct blk_mq_hw_ctx *, struct io_batch
 *)' from incompatible pointer type 'int (*)(struct blk_mq_hw_ctx *)'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git perf-wip
head:   ba7751cd7411b7aaffd07728bd7cd6eeb890865d
commit: c5b891d342f43c8e486be3aeacd5ee61298d3561 [13/20] block: add a struct io_batch argument to fops->iopoll()
config: h8300-randconfig-r004-20211008 (attached as .config)
compiler: h8300-linux-gcc (GCC) 11.2.0
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/axboe/linux-block.git/commit/?id=c5b891d342f43c8e486be3aeacd5ee61298d3561
        git remote add axboe-block https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
        git fetch --no-tags axboe-block perf-wip
        git checkout c5b891d342f43c8e486be3aeacd5ee61298d3561
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=h8300 

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

All errors (new ones prefixed by >>):

>> drivers/block/rnbd/rnbd-clt.c:1226:27: error: initialization of 'int (*)(struct blk_mq_hw_ctx *, struct io_batch *)' from incompatible pointer type 'int (*)(struct blk_mq_hw_ctx *)' [-Werror=incompatible-pointer-types]
    1226 |         .poll           = rnbd_rdma_poll,
         |                           ^~~~~~~~~~~~~~
   drivers/block/rnbd/rnbd-clt.c:1226:27: note: (near initialization for 'rnbd_mq_ops.poll')
   cc1: some warnings being treated as errors
--
>> drivers/nvme/host/tcp.c:2457:27: error: initialization of 'int (*)(struct blk_mq_hw_ctx *, struct io_batch *)' from incompatible pointer type 'int (*)(struct blk_mq_hw_ctx *)' [-Werror=incompatible-pointer-types]
    2457 |         .poll           = nvme_tcp_poll,
         |                           ^~~~~~~~~~~~~
   drivers/nvme/host/tcp.c:2457:27: note: (near initialization for 'nvme_tcp_mq_ops.poll')
   cc1: some warnings being treated as errors


vim +1226 drivers/block/rnbd/rnbd-clt.c

2958a995edc946 Gioh Kim  2021-04-19  1221  
f7a7a5c228d45e Jack Wang 2020-05-11  1222  static struct blk_mq_ops rnbd_mq_ops = {
f7a7a5c228d45e Jack Wang 2020-05-11  1223  	.queue_rq	= rnbd_queue_rq,
f7a7a5c228d45e Jack Wang 2020-05-11  1224  	.complete	= rnbd_softirq_done_fn,
2958a995edc946 Gioh Kim  2021-04-19  1225  	.map_queues     = rnbd_rdma_map_queues,
2958a995edc946 Gioh Kim  2021-04-19 @1226  	.poll           = rnbd_rdma_poll,
f7a7a5c228d45e Jack Wang 2020-05-11  1227  };
f7a7a5c228d45e Jack Wang 2020-05-11  1228  

:::::: The code at line 1226 was first introduced by commit
:::::: 2958a995edc94654df690318df7b9b49e5a3ef88 block/rnbd-clt: Support polling mode for IO latency optimization

:::::: TO: Gioh Kim <gi-oh.kim@...ud.ionos.com>
:::::: CC: Jens Axboe <axboe@...nel.dk>

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

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