Hi Ji-Ze, kernel test robot noticed the following build warnings: [auto build test WARNING on mkl-can-next/testing] [also build test WARNING on linus/master v6.4-rc1 next-20230510] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Ji-Ze-Hong-Peter-Hong/can-usb-f81604-add-Fintek-F81604-support/20230509-154045 base: https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git testing patch link: https://lore.kernel.org/r/20230509073821.25289-1-peter_hong%40fintek.com.tw patch subject: [PATCH V7] can: usb: f81604: add Fintek F81604 support config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20230510/202305101816.meuESNdN-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111) 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/intel-lab-lkp/linux/commit/9549380f8d5eea359f8c83f48e10a0becfd13541 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Ji-Ze-Hong-Peter-Hong/can-usb-f81604-add-Fintek-F81604-support/20230509-154045 git checkout 9549380f8d5eea359f8c83f48e10a0becfd13541 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/hwmon/ drivers/net/can/usb/ drivers/watchdog/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202305101816.meuESNdN-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/net/can/usb/f81604.c:7: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from drivers/net/can/usb/f81604.c:7: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from drivers/net/can/usb/f81604.c:7: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ >> drivers/net/can/usb/f81604.c:441:28: warning: format specifies type 'unsigned long' but the argument has type 'unsigned int' [-Wformat] urb->actual_length, sizeof(*frame)); ^~~~~~~~~~~~~~ 7 warnings generated. vim +441 drivers/net/can/usb/f81604.c 411 412 static void f81604_read_bulk_callback(struct urb *urb) 413 { 414 struct f81604_can_frame *frame = urb->transfer_buffer; 415 struct net_device *netdev = urb->context; 416 int ret; 417 418 if (!netif_device_present(netdev)) 419 return; 420 421 if (urb->status) 422 netdev_info(netdev, "%s: URB aborted %pe\n", __func__, 423 ERR_PTR(urb->status)); 424 425 switch (urb->status) { 426 case 0: /* success */ 427 break; 428 429 case -ENOENT: 430 case -EPIPE: 431 case -EPROTO: 432 case -ESHUTDOWN: 433 return; 434 435 default: 436 goto resubmit_urb; 437 } 438 439 if (urb->actual_length != sizeof(*frame)) { 440 netdev_warn(netdev, "URB length %u not equal to %lu\n", > 441 urb->actual_length, sizeof(*frame)); 442 goto resubmit_urb; 443 } 444 445 f81604_process_rx_packet(netdev, frame); 446 447 resubmit_urb: 448 ret = usb_submit_urb(urb, GFP_ATOMIC); 449 if (ret == -ENODEV) 450 netif_device_detach(netdev); 451 else if (ret) 452 netdev_err(netdev, 453 "%s: failed to resubmit read bulk urb: %pe\n", 454 __func__, ERR_PTR(ret)); 455 } 456 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
