Hi Chetan, I love your patch! Yet something to improve: [auto build test ERROR on net/master] [also build test ERROR on ipvs/master net-next/master linus/master v5.13-rc5 next-20210608] [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/M-Chetan-Kumar/net-iosm-PCIe-Dri... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 7a6b1ab7475fd6478eeaf5c9d1163e7a18125c8f config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/8720122f89695c8d8577b373d58551163... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review M-Chetan-Kumar/net-iosm-PCIe-Driver-for-Intel-M-2-Modem/20210609-010731 git checkout 8720122f89695c8d8577b373d585511632aa69ec # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 231 | static const struct wwan_ops iosm_wwan_ops = { | ^~~~~~~~ 232 | .priv_size = sizeof(struct iosm_netdev_priv), | ^~~~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:232:15: warning: excess elements in struct initializer 232 | .priv_size = sizeof(struct iosm_netdev_priv), | ^~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:232:15: note: (near initialization for 'iosm_wwan_ops') 233 | .setup = ipc_wwan_setup, | ^~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:233:11: warning: excess elements in struct initializer 233 | .setup = ipc_wwan_setup, | ^~~~~~~~~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:233:11: note: (near initialization for 'iosm_wwan_ops') 234 | .newlink = ipc_wwan_newlink, | ^~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:234:13: warning: excess elements in struct initializer 234 | .newlink = ipc_wwan_newlink, | ^~~~~~~~~~~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:234:13: note: (near initialization for 'iosm_wwan_ops') 235 | .dellink = ipc_wwan_dellink, | ^~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:235:13: warning: excess elements in struct initializer 235 | .dellink = ipc_wwan_dellink, | ^~~~~~~~~~~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c:235:13: note: (near initialization for 'iosm_wwan_ops') drivers/net/wwan/iosm/iosm_ipc_wwan.c: In function 'ipc_wwan_init': 319 | if (wwan_register_ops(ipc_wwan->dev, &iosm_wwan_ops, ipc_wwan)) { | ^~~~~~~~~~~~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c: In function 'ipc_wwan_deinit': 333 | wwan_unregister_ops(ipc_wwan->dev); | ^~~~~~~~~~~~~~~~~~~ drivers/net/wwan/iosm/iosm_ipc_wwan.c: At top level: 231 | static const struct wwan_ops iosm_wwan_ops = { | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/iosm_wwan_ops +231 drivers/net/wwan/iosm/iosm_ipc_wwan.c a55422b04bda2b M Chetan Kumar 2021-06-08 230 a55422b04bda2b M Chetan Kumar 2021-06-08 @231 static const struct wwan_ops iosm_wwan_ops = { a55422b04bda2b M Chetan Kumar 2021-06-08 @232 .priv_size = sizeof(struct iosm_netdev_priv), a55422b04bda2b M Chetan Kumar 2021-06-08 @233 .setup = ipc_wwan_setup, a55422b04bda2b M Chetan Kumar 2021-06-08 @234 .newlink = ipc_wwan_newlink, a55422b04bda2b M Chetan Kumar 2021-06-08 @235 .dellink = ipc_wwan_dellink, a55422b04bda2b M Chetan Kumar 2021-06-08 236 }; a55422b04bda2b M Chetan Kumar 2021-06-08 237 a55422b04bda2b M Chetan Kumar 2021-06-08 238 int ipc_wwan_receive(struct iosm_wwan *ipc_wwan, struct sk_buff *skb_arg, a55422b04bda2b M Chetan Kumar 2021-06-08 239 bool dss, int if_id) a55422b04bda2b M Chetan Kumar 2021-06-08 240 { a55422b04bda2b M Chetan Kumar 2021-06-08 241 struct sk_buff *skb = skb_arg; a55422b04bda2b M Chetan Kumar 2021-06-08 242 struct net_device_stats *stats; a55422b04bda2b M Chetan Kumar 2021-06-08 243 struct iosm_netdev_priv *priv; a55422b04bda2b M Chetan Kumar 2021-06-08 244 int ret; a55422b04bda2b M Chetan Kumar 2021-06-08 245 a55422b04bda2b M Chetan Kumar 2021-06-08 246 if ((skb->data[0] & IOSM_IP_TYPE_MASK) == IOSM_IP_TYPE_IPV4) a55422b04bda2b M Chetan Kumar 2021-06-08 247 skb->protocol = htons(ETH_P_IP); a55422b04bda2b M Chetan Kumar 2021-06-08 248 else if ((skb->data[0] & IOSM_IP_TYPE_MASK) == a55422b04bda2b M Chetan Kumar 2021-06-08 249 IOSM_IP_TYPE_IPV6) a55422b04bda2b M Chetan Kumar 2021-06-08 250 skb->protocol = htons(ETH_P_IPV6); a55422b04bda2b M Chetan Kumar 2021-06-08 251 a55422b04bda2b M Chetan Kumar 2021-06-08 252 skb->pkt_type = PACKET_HOST; a55422b04bda2b M Chetan Kumar 2021-06-08 253 a55422b04bda2b M Chetan Kumar 2021-06-08 254 if (if_id < (IP_MUX_SESSION_START - 1) || a55422b04bda2b M Chetan Kumar 2021-06-08 255 if_id > (IP_MUX_SESSION_END - 1)) { a55422b04bda2b M Chetan Kumar 2021-06-08 256 ret = -EINVAL; a55422b04bda2b M Chetan Kumar 2021-06-08 257 goto free; a55422b04bda2b M Chetan Kumar 2021-06-08 258 } a55422b04bda2b M Chetan Kumar 2021-06-08 259 a55422b04bda2b M Chetan Kumar 2021-06-08 260 rcu_read_lock(); a55422b04bda2b M Chetan Kumar 2021-06-08 261 priv = rcu_dereference(ipc_wwan->sub_netlist[if_id]); a55422b04bda2b M Chetan Kumar 2021-06-08 262 if (!priv) { a55422b04bda2b M Chetan Kumar 2021-06-08 263 ret = -EINVAL; a55422b04bda2b M Chetan Kumar 2021-06-08 264 goto unlock; a55422b04bda2b M Chetan Kumar 2021-06-08 265 } a55422b04bda2b M Chetan Kumar 2021-06-08 266 skb->dev = priv->netdev; a55422b04bda2b M Chetan Kumar 2021-06-08 267 stats = &priv->netdev->stats; a55422b04bda2b M Chetan Kumar 2021-06-08 268 stats->rx_packets++; a55422b04bda2b M Chetan Kumar 2021-06-08 269 stats->rx_bytes += skb->len; a55422b04bda2b M Chetan Kumar 2021-06-08 270 a55422b04bda2b M Chetan Kumar 2021-06-08 271 ret = netif_rx(skb); a55422b04bda2b M Chetan Kumar 2021-06-08 272 skb = NULL; a55422b04bda2b M Chetan Kumar 2021-06-08 273 unlock: a55422b04bda2b M Chetan Kumar 2021-06-08 274 rcu_read_unlock(); a55422b04bda2b M Chetan Kumar 2021-06-08 275 free: a55422b04bda2b M Chetan Kumar 2021-06-08 276 dev_kfree_skb(skb); a55422b04bda2b M Chetan Kumar 2021-06-08 277 return ret; a55422b04bda2b M Chetan Kumar 2021-06-08 278 } a55422b04bda2b M Chetan Kumar 2021-06-08 279 a55422b04bda2b M Chetan Kumar 2021-06-08 280 void ipc_wwan_tx_flowctrl(struct iosm_wwan *ipc_wwan, int if_id, bool on) a55422b04bda2b M Chetan Kumar 2021-06-08 281 { a55422b04bda2b M Chetan Kumar 2021-06-08 282 struct net_device *netdev; a55422b04bda2b M Chetan Kumar 2021-06-08 283 struct iosm_netdev_priv *priv; a55422b04bda2b M Chetan Kumar 2021-06-08 284 bool is_tx_blk; a55422b04bda2b M Chetan Kumar 2021-06-08 285 a55422b04bda2b M Chetan Kumar 2021-06-08 286 rcu_read_lock(); a55422b04bda2b M Chetan Kumar 2021-06-08 287 priv = rcu_dereference(ipc_wwan->sub_netlist[if_id]); a55422b04bda2b M Chetan Kumar 2021-06-08 288 if (!priv) { a55422b04bda2b M Chetan Kumar 2021-06-08 289 rcu_read_unlock(); a55422b04bda2b M Chetan Kumar 2021-06-08 290 return; a55422b04bda2b M Chetan Kumar 2021-06-08 291 } a55422b04bda2b M Chetan Kumar 2021-06-08 292 a55422b04bda2b M Chetan Kumar 2021-06-08 293 netdev = priv->netdev; a55422b04bda2b M Chetan Kumar 2021-06-08 294 a55422b04bda2b M Chetan Kumar 2021-06-08 295 is_tx_blk = netif_queue_stopped(netdev); a55422b04bda2b M Chetan Kumar 2021-06-08 296 a55422b04bda2b M Chetan Kumar 2021-06-08 297 if (on) a55422b04bda2b M Chetan Kumar 2021-06-08 298 dev_dbg(ipc_wwan->dev, "session id[%d]: flowctrl enable", a55422b04bda2b M Chetan Kumar 2021-06-08 299 if_id); a55422b04bda2b M Chetan Kumar 2021-06-08 300 a55422b04bda2b M Chetan Kumar 2021-06-08 301 if (on && !is_tx_blk) a55422b04bda2b M Chetan Kumar 2021-06-08 302 netif_stop_queue(netdev); a55422b04bda2b M Chetan Kumar 2021-06-08 303 else if (!on && is_tx_blk) a55422b04bda2b M Chetan Kumar 2021-06-08 304 netif_wake_queue(netdev); a55422b04bda2b M Chetan Kumar 2021-06-08 305 rcu_read_unlock(); a55422b04bda2b M Chetan Kumar 2021-06-08 306 } a55422b04bda2b M Chetan Kumar 2021-06-08 307 a55422b04bda2b M Chetan Kumar 2021-06-08 308 struct iosm_wwan *ipc_wwan_init(struct iosm_imem *ipc_imem, struct device *dev) a55422b04bda2b M Chetan Kumar 2021-06-08 309 { a55422b04bda2b M Chetan Kumar 2021-06-08 310 struct iosm_wwan *ipc_wwan; a55422b04bda2b M Chetan Kumar 2021-06-08 311 a55422b04bda2b M Chetan Kumar 2021-06-08 312 ipc_wwan = kzalloc(sizeof(*ipc_wwan), GFP_KERNEL); a55422b04bda2b M Chetan Kumar 2021-06-08 313 if (!ipc_wwan) a55422b04bda2b M Chetan Kumar 2021-06-08 314 return NULL; a55422b04bda2b M Chetan Kumar 2021-06-08 315 a55422b04bda2b M Chetan Kumar 2021-06-08 316 ipc_wwan->dev = dev; a55422b04bda2b M Chetan Kumar 2021-06-08 317 ipc_wwan->ipc_imem = ipc_imem; a55422b04bda2b M Chetan Kumar 2021-06-08 318 a55422b04bda2b M Chetan Kumar 2021-06-08 @319 if (wwan_register_ops(ipc_wwan->dev, &iosm_wwan_ops, ipc_wwan)) { a55422b04bda2b M Chetan Kumar 2021-06-08 320 kfree(ipc_wwan); a55422b04bda2b M Chetan Kumar 2021-06-08 321 return NULL; a55422b04bda2b M Chetan Kumar 2021-06-08 322 } a55422b04bda2b M Chetan Kumar 2021-06-08 323 a55422b04bda2b M Chetan Kumar 2021-06-08 324 mutex_init(&ipc_wwan->if_mutex); a55422b04bda2b M Chetan Kumar 2021-06-08 325 a55422b04bda2b M Chetan Kumar 2021-06-08 326 return ipc_wwan; a55422b04bda2b M Chetan Kumar 2021-06-08 327 } a55422b04bda2b M Chetan Kumar 2021-06-08 328 a55422b04bda2b M Chetan Kumar 2021-06-08 329 void ipc_wwan_deinit(struct iosm_wwan *ipc_wwan) a55422b04bda2b M Chetan Kumar 2021-06-08 330 { a55422b04bda2b M Chetan Kumar 2021-06-08 331 int if_id; a55422b04bda2b M Chetan Kumar 2021-06-08 332 a55422b04bda2b M Chetan Kumar 2021-06-08 @333 wwan_unregister_ops(ipc_wwan->dev); --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org