Hi Srinivasan, I love your patch! Perhaps something to improve: [auto build test WARNING on wireless-drivers-next/master] [also build test WARNING on wireless-drivers/master net-next/master net/master linus/master v5.9 next-20201013] [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/wireless-Initial-driver-submission-for-pureLiFi-STA-devices/20201014-142216 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git master config: arc-allyesconfig (attached as .config) compiler: arceb-elf-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/2f1cd7604f364eba9428b88e2ab38c2a42272fcd git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Srinivasan-Raju/wireless-Initial-driver-submission-for-pureLiFi-STA-devices/20201014-142216 git checkout 2f1cd7604f364eba9428b88e2ab38c2a42272fcd # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 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/net/wireless/purelifi/usb.c:74:6: warning: no previous prototype for 'send_packet_from_data_queue' [-Wmissing-prototypes] 74 | void send_packet_from_data_queue(struct purelifi_usb *usb) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/purelifi/usb.c: In function 'rx_urb_complete': >> drivers/net/wireless/purelifi/usb.c:124:26: warning: variable 'rx' set but not used [-Wunused-but-set-variable] 124 | struct purelifi_usb_rx *rx; | ^~ drivers/net/wireless/purelifi/usb.c: In function 'tx_urb_complete': >> drivers/net/wireless/purelifi/usb.c:416:26: warning: variable 'tx' set but not used [-Wunused-but-set-variable] 416 | struct purelifi_usb_tx *tx; | ^~ drivers/net/wireless/purelifi/usb.c: In function 'purelifi_store_frequency': >> drivers/net/wireless/purelifi/usb.c:1101:9: warning: variable 'r' set but not used [-Wunused-but-set-variable] 1101 | int i, r, row, col, predivider, feedback_divider, output_div_0; | ^ drivers/net/wireless/purelifi/usb.c: At top level: >> drivers/net/wireless/purelifi/usb.c:1544:9: warning: no previous prototype for 'modulation_write' [-Wmissing-prototypes] 1544 | ssize_t modulation_write(struct file *file_p, | ^~~~~~~~~~~~~~~~ -- drivers/net/wireless/purelifi/mac.c: In function 'purelifi_restore_settings': >> drivers/net/wireless/purelifi/mac.c:137:26: warning: variable 'multicast_hash' set but not used [-Wunused-but-set-variable] 137 | struct purelifi_mc_hash multicast_hash; | ^~~~~~~~~~~~~~ drivers/net/wireless/purelifi/mac.c: In function 'purelifi_mac_tx_status': >> drivers/net/wireless/purelifi/mac.c:190:19: warning: variable 'retry' set but not used [-Wunused-but-set-variable] 190 | int success = 1, retry = 1; | ^~~~~ drivers/net/wireless/purelifi/mac.c: In function 'purelifi_op_configure_filter': >> drivers/net/wireless/purelifi/mac.c:656:6: warning: variable 'r' set but not used [-Wunused-but-set-variable] 656 | int r; | ^ vim +/send_packet_from_data_queue +74 drivers/net/wireless/purelifi/usb.c 73 > 74 void send_packet_from_data_queue(struct purelifi_usb *usb) 75 { 76 struct sk_buff *skb = NULL; 77 unsigned long flags; 78 static u8 sidx; 79 u8 last_served_sidx; 80 81 spin_lock_irqsave(&usb->tx.lock, flags); 82 last_served_sidx = sidx; 83 do { 84 sidx = (sidx + 1) % MAX_STA_NUM; 85 if ((usb->tx.station[sidx].flag & 86 STATION_CONNECTED_FLAG)) { 87 if (!(usb->tx.station[sidx].flag & 88 STATION_FIFO_FULL_FLAG)) { 89 skb = skb_peek(&usb->tx.station 90 [sidx].data_list); 91 } 92 } 93 } while ((sidx != last_served_sidx) && (!skb)); 94 95 if (skb) { 96 skb = skb_dequeue(&usb->tx.station[sidx].data_list); 97 usb_write_req_async(usb, skb->data, skb->len, USB_REQ_DATA_TX, 98 tx_urb_complete, skb); 99 if (skb_queue_len(&usb->tx.station[sidx].data_list) 100 <= 60) { 101 block_queue(usb, usb->tx.station[sidx].mac, 102 false); 103 } 104 } 105 spin_unlock_irqrestore(&usb->tx.lock, flags); 106 } 107 108 static void handle_rx_packet(struct purelifi_usb *usb, const u8 *buffer, 109 unsigned int length) 110 { 111 purelifi_mac_rx(purelifi_usb_to_hw(usb), buffer, length); 112 } 113 114 #define STATION_FIFO_ALMOST_FULL_MESSAGE 0 115 #define STATION_FIFO_ALMOST_FULL_NOT_MESSAGE 1 116 #define STATION_CONNECT_MESSAGE 2 117 #define STATION_DISCONNECT_MESSAGE 3 118 119 int rx_usb_enabled; 120 static void rx_urb_complete(struct urb *urb) 121 { 122 int r; 123 struct purelifi_usb *usb; > 124 struct purelifi_usb_rx *rx; 125 struct purelifi_usb_tx *tx; 126 const u8 *buffer; 127 static u8 fpga_link_connection_f; 128 unsigned int length; 129 u16 status; 130 u8 sidx; 131 132 if (!urb) { 133 dev_err(purelifi_usb_dev(usb), "urb is NULL.\n"); 134 return; 135 } else if (!urb->context) { 136 dev_err(purelifi_usb_dev(usb), "urb ctx is NULL.\n"); 137 return; 138 } 139 usb = urb->context; 140 141 if (usb->initialized != 1) 142 return; 143 144 switch (urb->status) { 145 case 0: 146 break; 147 case -ESHUTDOWN: 148 case -EINVAL: 149 case -ENODEV: 150 case -ENOENT: 151 case -ECONNRESET: 152 case -EPIPE: 153 dev_dbg(urb_dev(urb), "urb %p error %d\n", urb, urb->status); 154 return; 155 default: 156 dev_dbg(urb_dev(urb), "urb %p error %d\n", urb, urb->status); 157 goto resubmit; 158 } 159 160 buffer = urb->transfer_buffer; 161 length = (*(u32 *)(buffer + sizeof(struct rx_status))) + sizeof(u32); 162 163 rx = &usb->rx; 164 tx = &usb->tx; 165 166 if (urb->actual_length != 8) { 167 if (usb->initialized && fpga_link_connection_f) 168 handle_rx_packet(usb, buffer, length); 169 goto resubmit; 170 } 171 172 status = buffer[7]; 173 174 dev_info(&usb->intf->dev, "Recv status=%u\n", status); 175 dev_info(&usb->intf->dev, "Tx packet MAC=%x:%x:%x:%x:%x:%x\n", 176 buffer[0], buffer[1], buffer[2], buffer[3], 177 buffer[4], buffer[5]); 178 179 switch (status) { 180 case STATION_FIFO_ALMOST_FULL_NOT_MESSAGE: 181 dev_info(&usb->intf->dev, 182 "FIFO full not packet receipt.\n"); 183 tx->mac_fifo_full = 1; 184 for (sidx = 0; sidx < MAX_STA_NUM; sidx++) { 185 usb->tx.station[sidx].flag |= 186 STATION_FIFO_FULL_FLAG; 187 } 188 break; 189 case STATION_FIFO_ALMOST_FULL_MESSAGE: 190 dev_info(&usb->intf->dev, "FIFO full packet receipt.\n"); 191 192 for (sidx = 0; sidx < MAX_STA_NUM; sidx++) 193 usb->tx.station[sidx].flag &= 0xFD; 194 195 send_packet_from_data_queue(usb); 196 break; 197 case STATION_CONNECT_MESSAGE: 198 fpga_link_connection_f = 1; 199 dev_info(&usb->intf->dev, "ST_CONNECT_MSG packet receipt.\n"); 200 break; 201 case STATION_DISCONNECT_MESSAGE: 202 fpga_link_connection_f = 0; 203 dev_info(&usb->intf->dev, "ST_DISCONN_MSG packet receipt.\n"); 204 break; 205 default: 206 dev_info(&usb->intf->dev, "Unknown packet receipt.\n"); 207 break; 208 } 209 210 resubmit: 211 r = usb_submit_urb(urb, GFP_ATOMIC); 212 if (r) 213 dev_dbg(urb_dev(urb), "urb %p resubmit error %d\n", urb, r); 214 } 215 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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