tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 860461e4fcaa76200d2d1a53523e0ff7be92e6e8 commit: 98c2922ec8f0601321428be8c59ae1df255478d1 [1797/8629] ARM: s3c24xx: simplify mach/io.h config: arm-randconfig-s031-20200917 (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: v0.6.2-201-g24bdaac6-dirty git checkout 98c2922ec8f0601321428be8c59ae1df255478d1 # 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 sparse warnings: (new ones prefixed by >>) drivers/tty/ipwireless/hardware.c:431:25: sparse: sparse: cast from restricted __le16 drivers/tty/ipwireless/hardware.c:445:25: sparse: sparse: cast from restricted __le16 >> drivers/tty/ipwireless/hardware.c:872:43: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __le16 [usertype] raw_data @@ got unsigned short [usertype] __v @@ drivers/tty/ipwireless/hardware.c:872:43: sparse: expected restricted __le16 [usertype] raw_data >> drivers/tty/ipwireless/hardware.c:872:43: sparse: got unsigned short [usertype] __v drivers/tty/ipwireless/hardware.c:889:43: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __le16 [usertype] raw_data @@ got unsigned short [usertype] __v @@ drivers/tty/ipwireless/hardware.c:889:43: sparse: expected restricted __le16 [usertype] raw_data drivers/tty/ipwireless/hardware.c:889:43: sparse: got unsigned short [usertype] __v # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=98c2922ec8f0601321428be8c59ae1df255478d1 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 98c2922ec8f0601321428be8c59ae1df255478d1 vim +872 drivers/tty/ipwireless/hardware.c 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 850 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 851 /* 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 852 * Retrieve a packet from the IPW hardware. 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 853 */ 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 854 static void do_receive_packet(struct ipw_hardware *hw) 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 855 { 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 856 unsigned len; d4c0deb7009217 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 857 unsigned i; 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 858 unsigned char pkt[LL_MTU_MAX]; 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 859 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 860 start_timing(); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 861 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 862 if (hw->hw_version == HW_VERSION_1) { 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 863 len = inw(hw->base_port + IODRR); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 864 if (len > hw->ll_mtu) { 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 865 printk(KERN_INFO IPWIRELESS_PCCARD_NAME 622e713e8e207a drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 866 ": received a packet of %u bytes - longer than the MTU!\n", len); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 867 outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 868 return; 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 869 } 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 870 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 871 for (i = 0; i < len; i += 2) { 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 @872 __le16 raw_data = inw(hw->base_port + IODRR); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 873 unsigned short data = le16_to_cpu(raw_data); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 874 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 875 pkt[i] = (unsigned char) data; 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 876 pkt[i + 1] = (unsigned char) (data >> 8); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 877 } 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 878 } else { 2e713165f892c8 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 879 len = inw(hw->base_port); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 880 if (len > hw->ll_mtu) { 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 881 printk(KERN_INFO IPWIRELESS_PCCARD_NAME 622e713e8e207a drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 882 ": received a packet of %u bytes - longer than the MTU!\n", len); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 883 writew(MEMRX_PCINTACKK, 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 884 &hw->memory_info_regs->memreg_pc_interrupt_ack); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 885 return; 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 886 } 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 887 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 888 for (i = 0; i < len; i += 2) { 2e713165f892c8 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 889 __le16 raw_data = inw(hw->base_port); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 890 unsigned short data = le16_to_cpu(raw_data); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 891 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 892 pkt[i] = (unsigned char) data; 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 893 pkt[i + 1] = (unsigned char) (data >> 8); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 894 } 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 895 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 896 while ((i & 3) != 2) { 2e713165f892c8 drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 897 inw(hw->base_port); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 898 i += 2; 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 899 } 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 900 } 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 901 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 902 acknowledge_data_read(hw); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 903 d54c2752f6bb6c drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 904 swap_packet_bitfield_from_le(pkt); d54c2752f6bb6c drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-07-28 905 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 906 if (ipwireless_debug) 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 907 dump_data_bytes("recv", pkt, len); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 908 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 909 handle_received_packet(hw, (union nl_packet *) pkt, len); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 910 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 911 end_read_timing(len); 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 912 } 099dc4fb62653f drivers/char/pcmcia/ipwireless/hardware.c David Sterba 2008-02-07 913 :::::: The code at line 872 was first introduced by commit :::::: 099dc4fb62653f6019d78db55fba7a18ef02d65b ipwireless: driver for PC Card 3G/UMTS modem :::::: TO: David Sterba :::::: CC: Linus Torvalds --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org