Re: [PATCH 2/3] megaraid_sas: iouring iopoll support

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Hi Kashyap,

I love your patch! Perhaps something to improve:

[auto build test WARNING on next-20201013]
[cannot apply to scsi/for-next mkp-scsi/for-next v5.9 v5.9-rc8 v5.9-rc7 v5.9]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Kashyap-Desai/add-io_uring-with-IOPOLL-support-in-scsi-layer/20201014-202916
base:    f2fb1afc57304f9dd68c20a08270e287470af2eb
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 9.3.0
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://github.com/0day-ci/linux/commit/4f93510c3e695f6f22822115f6587db68fb40e5c
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Kashyap-Desai/add-io_uring-with-IOPOLL-support-in-scsi-layer/20201014-202916
        git checkout 4f93510c3e695f6f22822115f6587db68fb40e5c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 

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

All warnings (new ones prefixed by >>):

>> drivers/scsi/megaraid/megaraid_sas_fusion.c:3652:5: warning: no previous prototype for 'megasas_blk_mq_poll' [-Wmissing-prototypes]
    3652 | int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
         |     ^~~~~~~~~~~~~~~~~~~

vim +/megasas_blk_mq_poll +3652 drivers/scsi/megaraid/megaraid_sas_fusion.c

  3651	
> 3652	int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
  3653	{
  3654	
  3655		struct megasas_instance *instance;
  3656		int num_entries = 0;
  3657		struct fusion_context *fusion;
  3658	
  3659		instance = (struct megasas_instance *)shost->hostdata;
  3660	
  3661		fusion = instance->ctrl_context;
  3662	
  3663		queue_num = queue_num + instance->low_latency_index_start;
  3664	
  3665		if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1))
  3666			return 0;
  3667	
  3668		num_entries = complete_cmd_fusion(instance, queue_num, NULL);
  3669		atomic_dec(&fusion->busy_mq_poll[queue_num]);
  3670	
  3671		return num_entries;
  3672	}
  3673	

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

Attachment: .config.gz
Description: application/gzip


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