tree: https://github.com/hnaz/linux-mm master head: 5ec055192cbeb593816c9a33b97d7d5a0cddf60c commit: 1a850f4a53b9a0dc1104c6bf418e5036edf429d4 [1/169] origin config: i386-randconfig-s002-20200623 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-dirty git checkout 1a850f4a53b9a0dc1104c6bf418e5036edf429d4 # save the attached .config to linux build tree make W=1 C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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/tty/serial/ucc_uart.c:264:21: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:268:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:268:21: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:268:21: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:286:6: sparse: sparse: symbol 'qe_uart_set_mctrl' was not declared. Should it be static? drivers/tty/serial/ucc_uart.c:347:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:347:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:347:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:348:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:348:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:348:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:348:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:348:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:348:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:350:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:350:21: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:350:21: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:369:18: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:369:18: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:369:18: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:382:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:382:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:382:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:383:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:383:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:383:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:383:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:383:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:383:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:386:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:386:21: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:386:21: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:474:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:474:26: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:474:26: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:481:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:481:21: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:481:21: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:512:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:512:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:512:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:512:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:512:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:512:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:515:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:515:21: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:515:21: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:604:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:604:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:604:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:605:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:605:17: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:606:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:606:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:606:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:612:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:612:9: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:612:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:613:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/tty/serial/ucc_uart.c:613:9: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:613:9: sparse: got restricted __be32 * drivers/tty/serial/ucc_uart.c:614:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:614:9: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:614:9: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:625:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:625:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:625:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:626:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/tty/serial/ucc_uart.c:626:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:627:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:637:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be32 * @@ drivers/tty/serial/ucc_uart.c:638:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:639:9: sparse: expected void [noderef] __iomem * 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_pram [noderef] __iomem *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] __iomem *uccup drivers/tty/serial/ucc_uart.c:661:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got unsigned char * @@ drivers/tty/serial/ucc_uart.c:662:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:663:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:664:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:665:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:666:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:667:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:668:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:669:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:670:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:671:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:672:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:674:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:675:9: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:713:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:714:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be32 * @@ drivers/tty/serial/ucc_uart.c:715:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be32 * @@ drivers/tty/serial/ucc_uart.c:716:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got unsigned char * @@ drivers/tty/serial/ucc_uart.c:717:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got unsigned char * @@ drivers/tty/serial/ucc_uart.c:718:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be32 * @@ drivers/tty/serial/ucc_uart.c:719:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got unsigned char * @@ drivers/tty/serial/ucc_uart.c:720:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be32 * @@ drivers/tty/serial/ucc_uart.c:721:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got unsigned char * @@ drivers/tty/serial/ucc_uart.c:722:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got unsigned char * @@ drivers/tty/serial/ucc_uart.c:724:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:726:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got unsigned char * @@ drivers/tty/serial/ucc_uart.c:727:17: sparse: expected void [noderef] __iomem * 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] __iomem * @@ got restricted __be16 * @@ drivers/tty/serial/ucc_uart.c:728:17: sparse: expected void [noderef] __iomem * drivers/tty/serial/ucc_uart.c:728:17: sparse: got restricted __be16 * drivers/tty/serial/ucc_uart.c:1000:27: sparse: sparse: cast removes address space '__iomem' of expression drivers/tty/serial/ucc_uart.c:1000:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ucc_uart_pram [noderef] __iomem *uccup @@ got struct ucc_uart_pram * @@ drivers/tty/serial/ucc_uart.c:1000:24: sparse: expected struct ucc_uart_pram [noderef] __iomem *uccup drivers/tty/serial/ucc_uart.c:1000:24: sparse: got struct ucc_uart_pram * drivers/tty/serial/ucc_uart.c:1001:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct qe_bd *rx_bd_base @@ got struct qe_bd [noderef] __iomem *rx_bd @@ drivers/tty/serial/ucc_uart.c:1001:29: sparse: expected struct qe_bd *rx_bd_base drivers/tty/serial/ucc_uart.c:1001:29: sparse: got struct qe_bd [noderef] __iomem *rx_bd drivers/tty/serial/ucc_uart.c:1002:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct qe_bd *tx_bd_base @@ got struct qe_bd [noderef] __iomem *tx_bd @@ drivers/tty/serial/ucc_uart.c:1002:29: sparse: expected struct qe_bd *tx_bd_base drivers/tty/serial/ucc_uart.c:1002:29: sparse: got struct qe_bd [noderef] __iomem *tx_bd -- drivers/video/fbdev/atmel_lcdfb.c:354:27: sparse: got void * drivers/video/fbdev/atmel_lcdfb.c:362:20: sparse: expected void *p drivers/video/fbdev/atmel_lcdfb.c:333:59: sparse: expected void *cpu_addr drivers/video/fbdev/atmel_lcdfb.c:333:59: sparse: got char [noderef] __iomem *screen_base drivers/video/fbdev/atmel_lcdfb.c:333:59: sparse: expected void *cpu_addr drivers/video/fbdev/atmel_lcdfb.c:333:59: sparse: got char [noderef] __iomem *screen_base -- drivers/clocksource/jcore-pit.c:126:33: sparse: got void * drivers/clocksource/jcore-pit.c:176:40: sparse: expected void *dev vim +264 drivers/tty/serial/ucc_uart.c d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 248 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 249 /* d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 250 * Return 1 if the QE is done transmitting all buffers for this port d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 251 * d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 252 * This function scans each BD in sequence. If we find a BD that is not d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 253 * ready (READY=1), then we return 0 indicating that the QE is still sending d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 254 * data. If we reach the last BD (WRAP=1), then we know we've scanned d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 255 * the entire list, and all BDs are done. d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 256 */ d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 257 static unsigned int qe_uart_tx_empty(struct uart_port *port) d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 258 { d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 259 struct uart_qe_port *qe_port = d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 260 container_of(port, struct uart_qe_port, port); d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 261 struct qe_bd *bdp = qe_port->tx_bd_base; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 262 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 263 while (1) { 8b1cdc4033bd16 drivers/tty/serial/ucc_uart.c Rasmus Villemoes 2019-11-28 @264 if (qe_ioread16be(&bdp->status) & BD_SC_READY) d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 265 /* This BD is not done, so return "not done" */ d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 266 return 0; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 267 8b1cdc4033bd16 drivers/tty/serial/ucc_uart.c Rasmus Villemoes 2019-11-28 268 if (qe_ioread16be(&bdp->status) & BD_SC_WRAP) d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 269 /* d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 270 * This BD is done and it's the last one, so return d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 271 * "done" d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 272 */ d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 273 return 1; d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 274 d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 275 bdp++; fc811472c2167c drivers/tty/serial/ucc_uart.c Joe Perches 2013-10-08 276 } d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 277 } d7584ed2b994a5 drivers/serial/ucc_uart.c Timur Tabi 2008-01-15 278 :::::: The code at line 264 was first introduced by commit :::::: 8b1cdc4033bd1659c5499c918d4e59bf8253abec serial: ucc_uart: replace ppc-specific IO accessors :::::: TO: Rasmus Villemoes <linux(a)rasmusvillemoes.dk&gt; :::::: CC: Li Yang <leoyang.li(a)nxp.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org