[kbuild-all] drivers/hsi/clients/ssi_protocol.c:630:33: sparse: sparse: cast to restricted __be16

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e0756cfc7d7cd08c98a53b6009c091a3f6a50be6 commit: bbd7ffdbef6888459f301c5889f3b14ada38b913 clk: Allow the common clk framework to be selectable date: 9 months ago config: arm-randconfig-s032-20210209 (attached as .config) compiler: arm-linux-gnueabi-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: v0.6.3-215-g0fb77bb6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout bbd7ffdbef6888459f301c5889f3b14ada38b913 # 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__' ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" drivers/hsi/clients/ssi_protocol.c:631:9: sparse: sparse: cast to restricted __be16 drivers/hsi/clients/ssi_protocol.c:631:9: sparse: sparse: cast to restricted __be16 drivers/hsi/clients/ssi_protocol.c:631:9: sparse: sparse: cast to restricted __be16 drivers/hsi/clients/ssi_protocol.c:631:9: sparse: sparse: cast to restricted __be16 drivers/hsi/clients/ssi_protocol.c:992:31: sparse: expected unsigned short [usertype] drivers/hsi/clients/ssi_protocol.c:992:31: sparse: got restricted __be16 [usertype] vim +630 drivers/hsi/clients/ssi_protocol.c dc7bf5d7186849 Sebastian Reichel 2013-11-15 607 dc7bf5d7186849 Sebastian Reichel 2013-11-15 608 /* In soft IRQ context */ dc7bf5d7186849 Sebastian Reichel 2013-11-15 609 static void ssip_pn_rx(struct sk_buff *skb) dc7bf5d7186849 Sebastian Reichel 2013-11-15 610 { dc7bf5d7186849 Sebastian Reichel 2013-11-15 611 struct net_device *dev = skb->dev; dc7bf5d7186849 Sebastian Reichel 2013-11-15 612 dc7bf5d7186849 Sebastian Reichel 2013-11-15 613 if (unlikely(!netif_running(dev))) { dc7bf5d7186849 Sebastian Reichel 2013-11-15 614 dev_dbg(&dev->dev, "Drop RX packet\n"); dc7bf5d7186849 Sebastian Reichel 2013-11-15 615 dev->stats.rx_dropped++; dc7bf5d7186849 Sebastian Reichel 2013-11-15 616 dev_kfree_skb(skb); dc7bf5d7186849 Sebastian Reichel 2013-11-15 617 return; dc7bf5d7186849 Sebastian Reichel 2013-11-15 618 } dc7bf5d7186849 Sebastian Reichel 2013-11-15 619 if (unlikely(!pskb_may_pull(skb, SSIP_MIN_PN_HDR))) { dc7bf5d7186849 Sebastian Reichel 2013-11-15 620 dev_dbg(&dev->dev, "Error drop RX packet\n"); dc7bf5d7186849 Sebastian Reichel 2013-11-15 621 dev->stats.rx_errors++; dc7bf5d7186849 Sebastian Reichel 2013-11-15 622 dev->stats.rx_length_errors++; dc7bf5d7186849 Sebastian Reichel 2013-11-15 623 dev_kfree_skb(skb); dc7bf5d7186849 Sebastian Reichel 2013-11-15 624 return; dc7bf5d7186849 Sebastian Reichel 2013-11-15 625 } dc7bf5d7186849 Sebastian Reichel 2013-11-15 626 dev->stats.rx_packets++; dc7bf5d7186849 Sebastian Reichel 2013-11-15 627 dev->stats.rx_bytes += skb->len; dc7bf5d7186849 Sebastian Reichel 2013-11-15 628 dc7bf5d7186849 Sebastian Reichel 2013-11-15 629 /* length field is exchanged in network byte order */ dc7bf5d7186849 Sebastian Reichel 2013-11-15 @630 ((u16 *)skb->data)[2] = ntohs(((u16 *)skb->data)[2]); dc7bf5d7186849 Sebastian Reichel 2013-11-15 631 dev_dbg(&dev->dev, "RX length fixed (%04x -> %u)\n", dc7bf5d7186849 Sebastian Reichel 2013-11-15 632 ((u16 *)skb->data)[2], ntohs(((u16 *)skb->data)[2])); dc7bf5d7186849 Sebastian Reichel 2013-11-15 633 dc7bf5d7186849 Sebastian Reichel 2013-11-15 634 skb->protocol = htons(ETH_P_PHONET); dc7bf5d7186849 Sebastian Reichel 2013-11-15 635 skb_reset_mac_header(skb); dc7bf5d7186849 Sebastian Reichel 2013-11-15 636 __skb_pull(skb, 1); dc7bf5d7186849 Sebastian Reichel 2013-11-15 637 netif_rx(skb); dc7bf5d7186849 Sebastian Reichel 2013-11-15 638 } dc7bf5d7186849 Sebastian Reichel 2013-11-15 639 :::::: The code at line 630 was first introduced by commit :::::: dc7bf5d7186849aa36b9f0e42e250a813a7b0bdb HSI: Introduce driver for SSI Protocol :::::: TO: Sebastian Reichel <sre(a)kernel.org&gt; :::::: CC: Sebastian Reichel <sre(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org