[staging:staging-next 391/415] drivers/staging/wfx/sta.c:203:5: warning: no previous prototype for 'wfx_get_ps_timeout'

[kbuild test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-next
head:   36cf583eaff3458abbfac144c5e4d417a23fa1a1
commit: 398999dabc8cfc51c7274639cb87e2a316138859 [391/415] staging: wfx: split wfx_get_ps_timeout() from wfx_update_pm()
config: nds32-allyesconfig (attached as .config)
compiler: nds32le-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
        git checkout 398999dabc8cfc51c7274639cb87e2a316138859
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

In file included from ./arch/nds32/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/thread_info.h:12,
from include/asm-generic/preempt.h:5,
from ./arch/nds32/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/spinlock.h:51,
from include/linux/seqlock.h:36,
from include/linux/time.h:6,
from include/linux/skbuff.h:15,
from include/linux/if_ether.h:19,
from include/linux/etherdevice.h:20,
from drivers/staging/wfx/sta.c:8:
include/linux/dma-mapping.h: In function 'dma_map_resource':
arch/nds32/include/asm/memory.h:82:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
82 | #define pfn_valid(pfn)  ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr))
|                                ^~
include/asm-generic/bug.h:139:27: note: in definition of macro 'WARN_ON_ONCE'
139 |  int __ret_warn_once = !!(condition);            |                           ^~~~~~~~~
include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid'
352 |  if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr))))
|                   ^~~~~~~~~
drivers/staging/wfx/sta.c: At top level:
>> drivers/staging/wfx/sta.c:203:5: warning: no previous prototype for 'wfx_get_ps_timeout' [-Wmissing-prototypes]
203 | int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
|     ^~~~~~~~~~~~~~~~~~
drivers/staging/wfx/sta.c:233:5: warning: no previous prototype for 'wfx_update_pm' [-Wmissing-prototypes]
233 | int wfx_update_pm(struct wfx_vif *wvif)
|     ^~~~~~~~~~~~~

vim +/wfx_get_ps_timeout +203 drivers/staging/wfx/sta.c

   202	
 > 203	int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
   204	{
   205		struct ieee80211_channel *chan0 = NULL, *chan1 = NULL;
   206		struct ieee80211_conf *conf = &wvif->wdev->hw->conf;
   207	
   208		WARN(!wvif->vif->bss_conf.assoc && enable_ps,
   209		     "enable_ps is reliable only if associated");
   210		if (wdev_to_wvif(wvif->wdev, 0))
   211			chan0 = wdev_to_wvif(wvif->wdev, 0)->vif->bss_conf.chandef.chan;
   212		if (wdev_to_wvif(wvif->wdev, 1))
   213			chan1 = wdev_to_wvif(wvif->wdev, 1)->vif->bss_conf.chandef.chan;
   214		if (chan0 && chan1 && chan0->hw_value != chan1->hw_value &&
   215		    wvif->vif->type != NL80211_IFTYPE_AP) {
   216			// It is necessary to enable powersave if channels
   217			// are differents.
   218			if (enable_ps)
   219				*enable_ps = true;
   220			if (wvif->bss_not_support_ps_poll)
   221				return 30;
   222			else
   223				return 0;
   224		}
   225		if (enable_ps)
   226			*enable_ps = wvif->vif->bss_conf.ps;
   227		if (wvif->vif->bss_conf.assoc && wvif->vif->bss_conf.ps)
   228			return conf->dynamic_ps_timeout;
   229		else
   230			return -1;
   231	}
   232	

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

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