Hi Rosen, kernel test robot noticed the following build warnings: [auto build test WARNING on net-next/main] [also build test WARNING on next-20241108] [cannot apply to mkl-can-next/testing net/main linus/master v6.12-rc6] [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/Rosen-Penev/net-modernize-ioremap-in-probe/20241110-073751 base: net-next/main patch link: https://lore.kernel.org/r/20241109233641.8313-1-rosenp%40gmail.com patch subject: [PATCH] net: modernize ioremap in probe config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20241111/202411110419.EQz0nIvL-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241111/202411110419.EQz0nIvL-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411110419.EQz0nIvL-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/net/ethernet/freescale/xgmac_mdio.c:16: In file included from include/linux/acpi_mdio.h:9: In file included from include/linux/phy.h:16: In file included from include/linux/ethtool.h:18: In file included from include/linux/if_ether.h:19: 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:10: In file included from include/linux/mm.h:2213: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ In file included from drivers/net/ethernet/freescale/xgmac_mdio.c:16: In file included from include/linux/acpi_mdio.h:9: In file included from include/linux/phy.h:16: In file included from include/linux/ethtool.h:18: In file included from include/linux/if_ether.h:19: 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:14: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | 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' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from drivers/net/ethernet/freescale/xgmac_mdio.c:16: In file included from include/linux/acpi_mdio.h:9: In file included from include/linux/phy.h:16: In file included from include/linux/ethtool.h:18: In file included from include/linux/if_ether.h:19: 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:14: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | 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' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from drivers/net/ethernet/freescale/xgmac_mdio.c:16: In file included from include/linux/acpi_mdio.h:9: In file included from include/linux/phy.h:16: In file included from include/linux/ethtool.h:18: In file included from include/linux/if_ether.h:19: 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:14: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ >> drivers/net/ethernet/freescale/xgmac_mdio.c:395:45: warning: variable 'res' is uninitialized when used here [-Wuninitialized] 395 | snprintf(bus->id, MII_BUS_ID_SIZE, "%pa", &res->start); | ^~~ drivers/net/ethernet/freescale/xgmac_mdio.c:375:22: note: initialize the variable 'res' to silence this warning 375 | struct resource *res; | ^ | = NULL 8 warnings generated. vim +/res +395 drivers/net/ethernet/freescale/xgmac_mdio.c 909bea73485fab5 Tobias Waldekranz 2022-01-26 370 33897cc869eef8b Bill Pemberton 2012-12-03 371 static int xgmac_mdio_probe(struct platform_device *pdev) 9f35a7342cff0be Timur Tabi 2012-08-20 372 { ac53c26433b51f1 Marcin Wojtas 2021-06-25 373 struct fwnode_handle *fwnode; 73ee5442978b2dd Shaohui Xie 2015-03-16 374 struct mdio_fsl_priv *priv; 15e7064e8793352 Calvin Johnson 2021-06-11 375 struct resource *res; 15e7064e8793352 Calvin Johnson 2021-06-11 376 struct mii_bus *bus; 9f35a7342cff0be Timur Tabi 2012-08-20 377 int ret; 9f35a7342cff0be Timur Tabi 2012-08-20 378 229f4bb47512ece Calvin Johnson 2020-06-22 379 /* In DPAA-1, MDIO is one of the many FMan sub-devices. The FMan 229f4bb47512ece Calvin Johnson 2020-06-22 380 * defines a register space that spans a large area, covering all the 229f4bb47512ece Calvin Johnson 2020-06-22 381 * subdevice areas. Therefore, MDIO cannot claim exclusive access to 229f4bb47512ece Calvin Johnson 2020-06-22 382 * this register area. 229f4bb47512ece Calvin Johnson 2020-06-22 383 */ 9f35a7342cff0be Timur Tabi 2012-08-20 384 1d14eb15dc2c396 Tobias Waldekranz 2022-01-26 385 bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(struct mdio_fsl_priv)); 9f35a7342cff0be Timur Tabi 2012-08-20 386 if (!bus) 9f35a7342cff0be Timur Tabi 2012-08-20 387 return -ENOMEM; 9f35a7342cff0be Timur Tabi 2012-08-20 388 9f35a7342cff0be Timur Tabi 2012-08-20 389 bus->name = "Freescale XGMAC MDIO Bus"; c0fc8e6dcee40cf Andrew Lunn 2023-01-09 390 bus->read = xgmac_mdio_read_c22; c0fc8e6dcee40cf Andrew Lunn 2023-01-09 391 bus->write = xgmac_mdio_write_c22; c0fc8e6dcee40cf Andrew Lunn 2023-01-09 392 bus->read_c45 = xgmac_mdio_read_c45; c0fc8e6dcee40cf Andrew Lunn 2023-01-09 393 bus->write_c45 = xgmac_mdio_write_c45; 9f35a7342cff0be Timur Tabi 2012-08-20 394 bus->parent = &pdev->dev; 229f4bb47512ece Calvin Johnson 2020-06-22 @395 snprintf(bus->id, MII_BUS_ID_SIZE, "%pa", &res->start); 9f35a7342cff0be Timur Tabi 2012-08-20 396 73ee5442978b2dd Shaohui Xie 2015-03-16 397 priv = bus->priv; 865bbb2945a1614 Rosen Penev 2024-11-09 398 priv->mdio_base = devm_platform_ioremap_resource(pdev, 0); 865bbb2945a1614 Rosen Penev 2024-11-09 399 if (IS_ERR(priv->mdio_base)) 865bbb2945a1614 Rosen Penev 2024-11-09 400 return PTR_ERR(priv->mdio_base); 9f35a7342cff0be Timur Tabi 2012-08-20 401 15e7064e8793352 Calvin Johnson 2021-06-11 402 /* For both ACPI and DT cases, endianness of MDIO controller 15e7064e8793352 Calvin Johnson 2021-06-11 403 * needs to be specified using "little-endian" property. 15e7064e8793352 Calvin Johnson 2021-06-11 404 */ 229f4bb47512ece Calvin Johnson 2020-06-22 405 priv->is_little_endian = device_property_read_bool(&pdev->dev, 07bf2e11ad05868 Julia Lawall 2016-08-05 406 "little-endian"); 73ee5442978b2dd Shaohui Xie 2015-03-16 407 6198c722019774d Tobias Waldekranz 2022-01-18 408 priv->has_a009885 = device_property_read_bool(&pdev->dev, 6198c722019774d Tobias Waldekranz 2022-01-18 409 "fsl,erratum-a009885"); 229f4bb47512ece Calvin Johnson 2020-06-22 410 priv->has_a011043 = device_property_read_bool(&pdev->dev, 1d3ca681b9d9575 Madalin Bucur 2020-01-22 411 "fsl,erratum-a011043"); 1d3ca681b9d9575 Madalin Bucur 2020-01-22 412 909bea73485fab5 Tobias Waldekranz 2022-01-26 413 xgmac_mdio_set_suppress_preamble(bus); 909bea73485fab5 Tobias Waldekranz 2022-01-26 414 dd8f467eda72cda Tobias Waldekranz 2022-01-26 415 ret = xgmac_mdio_set_mdc_freq(bus); dd8f467eda72cda Tobias Waldekranz 2022-01-26 416 if (ret) dd8f467eda72cda Tobias Waldekranz 2022-01-26 417 return ret; dd8f467eda72cda Tobias Waldekranz 2022-01-26 418 105b0468d7b2e67 zhaoxiao 2022-08-18 419 fwnode = dev_fwnode(&pdev->dev); ac53c26433b51f1 Marcin Wojtas 2021-06-25 420 if (is_of_node(fwnode)) ac53c26433b51f1 Marcin Wojtas 2021-06-25 421 ret = of_mdiobus_register(bus, to_of_node(fwnode)); ac53c26433b51f1 Marcin Wojtas 2021-06-25 422 else if (is_acpi_node(fwnode)) ac53c26433b51f1 Marcin Wojtas 2021-06-25 423 ret = acpi_mdiobus_register(bus, fwnode); ac53c26433b51f1 Marcin Wojtas 2021-06-25 424 else ac53c26433b51f1 Marcin Wojtas 2021-06-25 425 ret = -EINVAL; 9f35a7342cff0be Timur Tabi 2012-08-20 426 if (ret) { 9f35a7342cff0be Timur Tabi 2012-08-20 427 dev_err(&pdev->dev, "cannot register MDIO bus\n"); 9f35a7342cff0be Timur Tabi 2012-08-20 428 return ret; 9f35a7342cff0be Timur Tabi 2012-08-20 429 } 9f35a7342cff0be Timur Tabi 2012-08-20 430 1d14eb15dc2c396 Tobias Waldekranz 2022-01-26 431 platform_set_drvdata(pdev, bus); 9f35a7342cff0be Timur Tabi 2012-08-20 432 9f35a7342cff0be Timur Tabi 2012-08-20 433 return 0; 9f35a7342cff0be Timur Tabi 2012-08-20 434 } 9f35a7342cff0be Timur Tabi 2012-08-20 435 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
