Hi Li, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.6-rc6 next-20200316] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Li-Yang/Fix-sparse-warnings-for-... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 807f030b44ccbb26a346df6f6438628315d9ad98 reproduce: # apt-get install sparse # sparse version: v0.6.1-175-g9d31ee5f-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/tty/serial/ucc_uart.c:626:17: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:627:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:627:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:627:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:637:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:637:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:637:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:638:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:638:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:638:9: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:639:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:639:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:639:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:653:46: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct ucc_uart_pram *uccup @@ got struct ucc_uart_prstruct ucc_uart_pram *uccup @@ drivers/tty/serial/ucc_uart.c:653:46: sparse: expected struct ucc_uart_pram *uccup drivers/tty/serial/ucc_uart.c:653:46: sparse: got struct ucc_uart_pram [noderef] <asn:2> *uccup drivers/tty/serial/ucc_uart.c:661:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:661:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:661:9: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:662:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:662:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:662:9: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:663:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:663:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:663:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:664:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:664:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:664:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:665:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:665:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:665:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:666:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:666:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:666:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:667:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:667:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:667:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:668:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:668:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:668:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:669:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:669:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:669:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:670:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:670:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:670:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:671:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:671:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:671:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:672:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:672:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:672:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:674:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:674:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:674:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:675:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:675:9: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:675:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:713:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:713:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:713:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:714:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:714:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:714:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:715:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:715:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:715:17: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:716:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:716:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:716:17: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:717:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:717:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:717:17: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:718:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:718:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:718:17: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:719:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:719:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:719:17: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:720:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:720:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:720:17: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:721:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:721:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:721:17: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:722:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:722:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:722:17: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:724:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:724:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:724:17: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:726:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:726:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:726:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:727:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got eref] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:727:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:727:17: sparse: got unsigned char * drivers/tty/serial/ucc_uart.c:728:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] <asn:2> * @@ got [noderef] <asn:2> * @@ drivers/tty/serial/ucc_uart.c:728:17: sparse: expected void [noderef] <asn:2> * drivers/tty/serial/ucc_uart.c:728:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:1000:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ucc_uart_pram [noderef] <asn:2> *uccup @@ got am [noderef] <asn:2> *uccup @@ drivers/tty/serial/ucc_uart.c:1000:24: sparse: expected struct ucc_uart_pram [noderef] <asn:2> *uccup drivers/tty/serial/ucc_uart.c:1000:24: sparse: got struct ucc_uart_pram * vim +1000 drivers/tty/serial/ucc_uart.c d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 976 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 977 /* d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 978 * Allocate any memory and I/O resources required by the port. d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 979 */ d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 980 static int qe_uart_request_port(struct uart_port *port) d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 981 { d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 982 int ret; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 983 struct uart_qe_port *qe_port = d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 984 container_of(port, struct uart_qe_port, port); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 985 struct ucc_slow_info *us_info = &qe_port->us_info; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 986 struct ucc_slow_private *uccs; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 987 unsigned int rx_size, tx_size; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 988 void *bd_virt; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 989 dma_addr_t bd_dma_addr = 0; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 990 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 991 ret = ucc_slow_init(us_info, &uccs); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 992 if (ret) { d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 993 dev_err(port->dev, "could not initialize UCC%u\n", d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 994 qe_port->ucc_num); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 995 return ret; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 996 } d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 997 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 998 qe_port->us_private = uccs; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 999 qe_port->uccp = uccs->us_regs; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 @1000 qe_port->uccup = (struct ucc_uart_pram *) uccs->us_pram; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 @1001 qe_port->rx_bd_base = uccs->rx_bd; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 @1002 qe_port->tx_bd_base = uccs->tx_bd; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1003 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1004 /* d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1005 * Allocate the transmit and receive data buffers. d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1006 */ d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1007 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1008 rx_size = L1_CACHE_ALIGN(qe_port->rx_nrfifos * qe_port->rx_fifosize); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1009 tx_size = L1_CACHE_ALIGN(qe_port->tx_nrfifos * qe_port->tx_fifosize); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1010 8b05cefca73bfb drivers/serial/ucc_uart.c Becky Bruce 2008-09-12 1011 bd_virt = dma_alloc_coherent(port->dev, rx_size + tx_size, &bd_dma_addr, d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1012 GFP_KERNEL); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1013 if (!bd_virt) { d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1014 dev_err(port->dev, "could not allocate buffer descriptors\n"); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1015 return -ENOMEM; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1016 } d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1017 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1018 qe_port->bd_virt = bd_virt; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1019 qe_port->bd_dma_addr = bd_dma_addr; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1020 qe_port->bd_size = rx_size + tx_size; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1021 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1022 qe_port->rx_buf = bd_virt; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1023 qe_port->tx_buf = qe_port->rx_buf + rx_size; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1024 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1025 return 0; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1026 } d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 1027 :::::: The code at line 1000 was first introduced by commit :::::: d7584ed2b994a572326650b0c4d2c25961e6f49d [POWERPC] qe-uart: add support for Freescale QUICCEngine UART :::::: TO: Timur Tabi <timur(a)freescale.com&gt; :::::: CC: Kumar Gala <galak(a)kernel.crashing.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org