Hi Srinivasan, I love your patch! Perhaps something to improve: [auto build test WARNING on kvalo-wireless-drivers-next/master] [also build test WARNING on kvalo-wireless-drivers/master jberg-mac80211/master v5.15-rc7] [cannot apply to jberg-mac80211-next/master next-20211026] [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/Srinivasan-Raju/nl80211-Add-LC-placeholder-band-definition-to-nl80211_band/20211018-190152 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git master config: mips-randconfig-r011-20211027 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5db7568a6a1fcb408eb8988abdaff2a225a8eb72) 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 # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://github.com/0day-ci/linux/commit/ae5d24705bf40b9954a995fd7d768ab4cc879bc2 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Srinivasan-Raju/nl80211-Add-LC-placeholder-band-definition-to-nl80211_band/20211018-190152 git checkout ae5d24705bf40b9954a995fd7d768ab4cc879bc2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/net/wireless/purelifi/plfxlc/usb.c:55:7: warning: logical not is only applied to the left hand side of this bitwise operator [-Wlogical-not-parentheses] if (!tx->station[sidx].flag & STATION_CONNECTED_FLAG) ^ ~ drivers/net/wireless/purelifi/plfxlc/usb.c:55:7: note: add parentheses after the '!' to evaluate the bitwise operator first if (!tx->station[sidx].flag & STATION_CONNECTED_FLAG) ^ ( ) drivers/net/wireless/purelifi/plfxlc/usb.c:55:7: note: add parentheses around left hand side expression to silence this warning if (!tx->station[sidx].flag & STATION_CONNECTED_FLAG) ^ ( ) drivers/net/wireless/purelifi/plfxlc/usb.c:38:19: warning: unused function 'get_bcd_device' [-Wunused-function] static inline u16 get_bcd_device(const struct usb_device *udev) ^ 2 warnings generated. -- >> drivers/net/wireless/purelifi/plfxlc/mac.c:560:25: warning: parameter 'changed_flags' set but not used [-Wunused-but-set-parameter] unsigned int changed_flags, ^ 1 warning generated. vim +55 drivers/net/wireless/purelifi/plfxlc/usb.c 42 43 void purelifi_send_packet_from_data_queue(struct purelifi_usb *usb) 44 { 45 struct sk_buff *skb = NULL; 46 unsigned long flags; 47 static u8 sidx; 48 u8 last_served_sidx; 49 struct purelifi_usb_tx *tx = &usb->tx; 50 51 spin_lock_irqsave(&tx->lock, flags); 52 last_served_sidx = sidx; 53 do { 54 sidx = (sidx + 1) % MAX_STA_NUM; > 55 if (!tx->station[sidx].flag & STATION_CONNECTED_FLAG) 56 continue; 57 if (!(tx->station[sidx].flag & STATION_FIFO_FULL_FLAG)) 58 skb = skb_peek(&tx->station[sidx].data_list); 59 } while ((sidx != last_served_sidx) && (!skb)); 60 61 if (skb) { 62 skb = skb_dequeue(&tx->station[sidx].data_list); 63 plf_usb_wreq_async(usb, skb->data, skb->len, USB_REQ_DATA_TX, 64 tx_urb_complete, skb); 65 if (skb_queue_len(&tx->station[sidx].data_list) <= 60) 66 ieee80211_wake_queues(purelifi_usb_to_hw(usb)); 67 } 68 spin_unlock_irqrestore(&tx->lock, flags); 69 } 70 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org