tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 96485e4462604744d66bf4301557d996d80b85eb commit: 8f28ca6bd8211214faf717677bbffe375c2a6072 iomap: constify ioreadX() iomem argument (as in generic implementation) date: 10 weeks ago config: powerpc64-randconfig-s031-20201022 (attached as .config) compiler: powerpc64-linux-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: v0.6.3-17-g2d3af347-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8f28ca6bd8211214faf717677bbffe375c2a6072 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8f28ca6bd8211214faf717677bbffe375c2a6072 # 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=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> "sparse warnings: (new ones prefixed by >>)" drivers/net/wan/fsl_ucc_hdlc.c:305:57: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:305:57: sparse: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:305:57: sparse: got restricted __be16 * drivers/net/wan/fsl_ucc_hdlc.c:307:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:307:46: sparse: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:307:46: sparse: got restricted __be32 * drivers/net/wan/fsl_ucc_hdlc.c:316:57: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:316:57: sparse: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:316:57: sparse: got restricted __be16 * drivers/net/wan/fsl_ucc_hdlc.c:318:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:318:46: sparse: expected void [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:318:46: sparse: got restricted __be32 * drivers/net/wan/fsl_ucc_hdlc.c:368:29: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got restricted __be16 [usertype] @@ drivers/net/wan/fsl_ucc_hdlc.c:368:29: sparse: expected unsigned short [usertype] drivers/net/wan/fsl_ucc_hdlc.c:368:29: sparse: got restricted __be16 [usertype] drivers/net/wan/fsl_ucc_hdlc.c:375:36: sparse: sparse: restricted __be16 degrades to integer drivers/net/wan/fsl_ucc_hdlc.c:398:12: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct qe_bd [noderef] __iomem *bd @@ got struct qe_bd *curtx_bd @@ drivers/net/wan/fsl_ucc_hdlc.c:398:12: sparse: expected struct qe_bd [noderef] __iomem *bd drivers/net/wan/fsl_ucc_hdlc.c:398:12: sparse: got struct qe_bd *curtx_bd drivers/net/wan/fsl_ucc_hdlc.c:421:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct qe_bd [noderef] __iomem *[assigned] bd @@ got struct qe_bd *tx_bd_base @@ drivers/net/wan/fsl_ucc_hdlc.c:421:20: sparse: expected struct qe_bd [noderef] __iomem *[assigned] bd drivers/net/wan/fsl_ucc_hdlc.c:421:20: sparse: got struct qe_bd *tx_bd_base drivers/net/wan/fsl_ucc_hdlc.c:423:16: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/net/wan/fsl_ucc_hdlc.c:423:16: sparse: struct qe_bd [noderef] __iomem * drivers/net/wan/fsl_ucc_hdlc.c:423:16: sparse: struct qe_bd * >> drivers/net/wan/fsl_ucc_hdlc.c:458:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:502:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:524:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:548:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:592:67: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:607:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:850:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct qe_mux *qe_mux_reg @@ got struct qe_mux [noderef] __iomem * @@ >> drivers/net/wan/fsl_ucc_hdlc.c:853:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:854:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:857:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:860:37: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const volatile [noderef] __iomem *s @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:865:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct qe_mux *qe_mux_reg @@ got struct qe_mux [noderef] __iomem * @@ drivers/net/wan/fsl_ucc_hdlc.c:867:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *d @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:869:40: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:870:40: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:872:39: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:992:57: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:994:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:1003:57: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be16 * @@ drivers/net/wan/fsl_ucc_hdlc.c:1005:46: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem * @@ got restricted __be32 * @@ drivers/net/wan/fsl_ucc_hdlc.c:408:35: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:408:35: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:723:29: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:814:21: sparse: sparse: dereference of noderef expression drivers/net/wan/fsl_ucc_hdlc.c:1020:29: sparse: sparse: dereference of noderef expression vim +458 drivers/net/wan/fsl_ucc_hdlc.c ba59d5705825fb Mathias Thore 2018-10-22 446 c19b6d246a3562 Zhao Qiang 2016-06-06 447 static int hdlc_tx_done(struct ucc_hdlc_private *priv) c19b6d246a3562 Zhao Qiang 2016-06-06 448 { c19b6d246a3562 Zhao Qiang 2016-06-06 449 /* Start from the next BD that should be filled */ c19b6d246a3562 Zhao Qiang 2016-06-06 450 struct net_device *dev = priv->ndev; 2e7ad56aa54778 Mathias Thore 2018-11-07 451 unsigned int bytes_sent = 0; 2e7ad56aa54778 Mathias Thore 2018-11-07 452 int howmany = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 453 struct qe_bd *bd; /* BD pointer */ c19b6d246a3562 Zhao Qiang 2016-06-06 454 u16 bd_status; ba59d5705825fb Mathias Thore 2018-10-22 455 int tx_restart = 0; c19b6d246a3562 Zhao Qiang 2016-06-06 456 c19b6d246a3562 Zhao Qiang 2016-06-06 457 bd = priv->dirty_tx; c19b6d246a3562 Zhao Qiang 2016-06-06 @458 bd_status = ioread16be(&bd->status); c19b6d246a3562 Zhao Qiang 2016-06-06 459 c19b6d246a3562 Zhao Qiang 2016-06-06 460 /* Normal processing. */ c19b6d246a3562 Zhao Qiang 2016-06-06 461 while ((bd_status & T_R_S) == 0) { c19b6d246a3562 Zhao Qiang 2016-06-06 462 struct sk_buff *skb; c19b6d246a3562 Zhao Qiang 2016-06-06 463 ba59d5705825fb Mathias Thore 2018-10-22 464 if (bd_status & T_UN_S) { /* Underrun */ ba59d5705825fb Mathias Thore 2018-10-22 465 dev->stats.tx_fifo_errors++; ba59d5705825fb Mathias Thore 2018-10-22 466 tx_restart = 1; ba59d5705825fb Mathias Thore 2018-10-22 467 } ba59d5705825fb Mathias Thore 2018-10-22 468 if (bd_status & T_CT_S) { /* Carrier lost */ ba59d5705825fb Mathias Thore 2018-10-22 469 dev->stats.tx_carrier_errors++; ba59d5705825fb Mathias Thore 2018-10-22 470 tx_restart = 1; ba59d5705825fb Mathias Thore 2018-10-22 471 } ba59d5705825fb Mathias Thore 2018-10-22 472 c19b6d246a3562 Zhao Qiang 2016-06-06 473 /* BD contains already transmitted buffer. */ c19b6d246a3562 Zhao Qiang 2016-06-06 474 /* Handle the transmitted buffer and release */ c19b6d246a3562 Zhao Qiang 2016-06-06 475 /* the BD to be used with the current frame */ c19b6d246a3562 Zhao Qiang 2016-06-06 476 c19b6d246a3562 Zhao Qiang 2016-06-06 477 skb = priv->tx_skbuff[priv->skb_dirtytx]; c19b6d246a3562 Zhao Qiang 2016-06-06 478 if (!skb) c19b6d246a3562 Zhao Qiang 2016-06-06 479 break; 2e7ad56aa54778 Mathias Thore 2018-11-07 480 howmany++; 2e7ad56aa54778 Mathias Thore 2018-11-07 481 bytes_sent += skb->len; c19b6d246a3562 Zhao Qiang 2016-06-06 482 dev->stats.tx_packets++; c19b6d246a3562 Zhao Qiang 2016-06-06 483 memset(priv->tx_buffer + c19b6d246a3562 Zhao Qiang 2016-06-06 484 (be32_to_cpu(bd->buf) - priv->dma_tx_addr), c19b6d246a3562 Zhao Qiang 2016-06-06 485 0, skb->len); 7c3850adbcccc2 Yang Wei 2019-02-06 486 dev_consume_skb_irq(skb); c19b6d246a3562 Zhao Qiang 2016-06-06 487 c19b6d246a3562 Zhao Qiang 2016-06-06 488 priv->tx_skbuff[priv->skb_dirtytx] = NULL; c19b6d246a3562 Zhao Qiang 2016-06-06 489 priv->skb_dirtytx = c19b6d246a3562 Zhao Qiang 2016-06-06 490 (priv->skb_dirtytx + c19b6d246a3562 Zhao Qiang 2016-06-06 491 1) & TX_RING_MOD_MASK(TX_BD_RING_LEN); c19b6d246a3562 Zhao Qiang 2016-06-06 492 c19b6d246a3562 Zhao Qiang 2016-06-06 493 /* We freed a buffer, so now we can restart transmission */ c19b6d246a3562 Zhao Qiang 2016-06-06 494 if (netif_queue_stopped(dev)) c19b6d246a3562 Zhao Qiang 2016-06-06 495 netif_wake_queue(dev); c19b6d246a3562 Zhao Qiang 2016-06-06 496 c19b6d246a3562 Zhao Qiang 2016-06-06 497 /* Advance the confirmation BD pointer */ c19b6d246a3562 Zhao Qiang 2016-06-06 498 if (!(bd_status & T_W_S)) c19b6d246a3562 Zhao Qiang 2016-06-06 499 bd += 1; c19b6d246a3562 Zhao Qiang 2016-06-06 500 else c19b6d246a3562 Zhao Qiang 2016-06-06 501 bd = priv->tx_bd_base; c19b6d246a3562 Zhao Qiang 2016-06-06 502 bd_status = ioread16be(&bd->status); c19b6d246a3562 Zhao Qiang 2016-06-06 503 } c19b6d246a3562 Zhao Qiang 2016-06-06 504 priv->dirty_tx = bd; c19b6d246a3562 Zhao Qiang 2016-06-06 505 ba59d5705825fb Mathias Thore 2018-10-22 506 if (tx_restart) ba59d5705825fb Mathias Thore 2018-10-22 507 hdlc_tx_restart(priv); ba59d5705825fb Mathias Thore 2018-10-22 508 2e7ad56aa54778 Mathias Thore 2018-11-07 509 netdev_completed_queue(dev, howmany, bytes_sent); c19b6d246a3562 Zhao Qiang 2016-06-06 510 return 0; c19b6d246a3562 Zhao Qiang 2016-06-06 511 } c19b6d246a3562 Zhao Qiang 2016-06-06 512 :::::: The code at line 458 was first introduced by commit :::::: c19b6d246a35627c3a69b2fa6bdece212b48214b drivers/net: support hdlc function for QE-UCC :::::: TO: Zhao Qiang <qiang.zhao@xxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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