[linux-next:master 10925/14602] drivers/net/wireless/mediatek/mt76/mt7921/mac.c:1392:70: sparse: sparse: Using plain integer as NULL pointer

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   c457d9676496f5a895509f9c510278beaaffc829
commit: 0c1ce988460765ece1ba8eacd00533eefb6e666a [10925/14602] mt76: mt7921: add wifi reset support
config: riscv-randconfig-s031-20210422 (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=0c1ce988460765ece1ba8eacd00533eefb6e666a
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 0c1ce988460765ece1ba8eacd00533eefb6e666a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=riscv 

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


sparse warnings: (new ones prefixed by >>)
>> drivers/net/wireless/mediatek/mt76/mt7921/mac.c:1392:70: sparse: sparse: Using plain integer as NULL pointer

vim +1392 drivers/net/wireless/mediatek/mt76/mt7921/mac.c

  1361	
  1362	/* system error recovery */
  1363	void mt7921_mac_reset_work(struct work_struct *work)
  1364	{
  1365		struct ieee80211_hw *hw;
  1366		struct mt7921_dev *dev;
  1367		int i;
  1368	
  1369		dev = container_of(work, struct mt7921_dev, reset_work);
  1370		hw = mt76_hw(dev);
  1371	
  1372		dev_err(dev->mt76.dev, "chip reset\n");
  1373		ieee80211_stop_queues(hw);
  1374	
  1375		cancel_delayed_work_sync(&dev->mphy.mac_work);
  1376		cancel_delayed_work_sync(&dev->pm.ps_work);
  1377		cancel_work_sync(&dev->pm.wake_work);
  1378	
  1379		mutex_lock(&dev->mt76.mutex);
  1380		for (i = 0; i < 10; i++) {
  1381			if (!mt7921_mac_reset(dev))
  1382				break;
  1383		}
  1384		mutex_unlock(&dev->mt76.mutex);
  1385	
  1386		if (i == 10)
  1387			dev_err(dev->mt76.dev, "chip reset failed\n");
  1388	
  1389		ieee80211_wake_queues(hw);
  1390		ieee80211_iterate_active_interfaces(hw,
  1391						    IEEE80211_IFACE_ITER_RESUME_ALL,
> 1392						    mt7921_vif_connect_iter, 0);
  1393	}
  1394	

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

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