[mkp-scsi:queue 116/118] drivers/scsi/ibmvscsi/ibmvfc.c:3644:10: note: in expansion of macro 'NULL'

[mkp-scsi:queue 116/118] drivers/scsi/ibmvscsi/ibmvfc.c:3644:10: note: in expansion of macro 'NULL'

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git queue
head:   c892193c1ec595e7f3f599ce817697d9a3d17f81
commit: 54b04c99d02e4c3e442fcb1e77f4ca6515be8826 [116/118] scsi: ibmvfc: Avoid loss of all paths during SVC node reboot
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 54b04c99d02e4c3e442fcb1e77f4ca6515be8826
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=powerpc 

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

All warnings (new ones prefixed by >>):

   In file included from include/uapi/linux/posix_types.h:5:0,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/linux/list.h:5,
                    from include/linux/module.h:12,
                    from drivers/scsi/ibmvscsi/ibmvfc.c:10:
   drivers/scsi/ibmvscsi/ibmvfc.c: In function 'ibmvfc_tgt_implicit_logout_and_del':
>> include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void
    #define NULL ((void *)0)
                 ^
>> drivers/scsi/ibmvscsi/ibmvfc.c:3644:10: note: in expansion of macro 'NULL'
      return NULL;
             ^~~~
   drivers/scsi/ibmvscsi/ibmvfc.c:3638:13: note: declared here
    static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *tgt)
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from include/uapi/linux/posix_types.h:5:0,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/linux/list.h:5,
                    from include/linux/module.h:12,
                    from drivers/scsi//ibmvscsi/ibmvfc.c:10:
   drivers/scsi//ibmvscsi/ibmvfc.c: In function 'ibmvfc_tgt_implicit_logout_and_del':
>> include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void
    #define NULL ((void *)0)
                 ^
   drivers/scsi//ibmvscsi/ibmvfc.c:3644:10: note: in expansion of macro 'NULL'
      return NULL;
             ^~~~
   drivers/scsi//ibmvscsi/ibmvfc.c:3638:13: note: declared here
    static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *tgt)
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/NULL +3644 drivers/scsi/ibmvscsi/ibmvfc.c

  3632	
  3633	/**
  3634	 * ibmvfc_tgt_implicit_logout_and_del - Initiate an Implicit Logout for specified target
  3635	 * @tgt:		ibmvfc target struct
  3636	 *
  3637	 **/
  3638	static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *tgt)
  3639	{
  3640		struct ibmvfc_host *vhost = tgt->vhost;
  3641		struct ibmvfc_event *evt;
  3642	
  3643		if (vhost->discovery_threads >= disc_threads)
> 3644			return NULL;
  3645	
  3646		vhost->discovery_threads++;
  3647		evt = __ibmvfc_tgt_get_implicit_logout_evt(tgt,
  3648							   ibmvfc_tgt_implicit_logout_and_del_done);
  3649	
  3650		ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT);
  3651		if (ibmvfc_send_event(evt, vhost, default_timeout)) {
  3652			vhost->discovery_threads--;
  3653			ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_DEL_RPORT);
  3654			kref_put(&tgt->kref, ibmvfc_release_tgt);
  3655		} else
  3656			tgt_dbg(tgt, "Sent Implicit Logout\n");
  3657	}
  3658	

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

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