Hi Matthew, First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258 commit: 171a9bae68c72f2d1260c3825203760856e6793b staging/octeon: Allow test build on !MIPS date: 11 months ago config: m68k-randconfig-r015-20200706 (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 171a9bae68c72f2d1260c3825203760856e6793b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): In file included from include/linux/ioport.h:13, from include/linux/device.h:15, from include/linux/platform_device.h:13, from drivers/net/phy/mdio-octeon.c:6: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra] 33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ drivers/net/phy/mdio-octeon.c: In function 'octeon_mdiobus_probe': >> drivers/net/phy/mdio-octeon.c:48:3: warning: cast from pointer to integer of >> different size [-Wpointer-to-int-cast] 48 | (u64)devm_ioremap(&pdev->dev, mdio_phys, regsize); | ^ In file included from drivers/net/phy/mdio-octeon.c:14: drivers/net/phy/mdio-cavium.h:111:36: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration] 111 | #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr) | ^~~~~~ >> drivers/net/phy/mdio-octeon.c:56:2: note: in expansion of macro >> 'oct_mdio_writeq' 56 | oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN); | ^~~~~~~~~~~~~~~ >> drivers/net/phy/mdio-cavium.h:111:48: warning: cast to pointer from integer >> of different size [-Wint-to-pointer-cast] 111 | #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr) | ^ >> drivers/net/phy/mdio-octeon.c:56:2: note: in expansion of macro >> 'oct_mdio_writeq' 56 | oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN); | ^~~~~~~~~~~~~~~ >> drivers/net/phy/mdio-cavium.h:111:48: warning: cast to pointer from integer >> of different size [-Wint-to-pointer-cast] 111 | #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr) | ^ drivers/net/phy/mdio-octeon.c:77:2: note: in expansion of macro 'oct_mdio_writeq' 77 | oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN); | ^~~~~~~~~~~~~~~ drivers/net/phy/mdio-octeon.c: In function 'octeon_mdiobus_remove': >> drivers/net/phy/mdio-cavium.h:111:48: warning: cast to pointer from integer >> of different size [-Wint-to-pointer-cast] 111 | #define oct_mdio_writeq(val, addr) writeq(val, (void *)addr) | ^ drivers/net/phy/mdio-octeon.c:91:2: note: in expansion of macro 'oct_mdio_writeq' 91 | oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN); | ^~~~~~~~~~~~~~~ drivers/net/phy/mdio-octeon.c: At top level: drivers/net/phy/mdio-octeon.c:112:6: warning: no previous prototype for 'octeon_mdiobus_force_mod_depencency' [-Wmissing-prototypes] 112 | void octeon_mdiobus_force_mod_depencency(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +48 drivers/net/phy/mdio-octeon.c 25d967b72a92d7 David Daney 2009-10-14 15 633d1594974b33 Bill Pemberton 2012-12-03 16 static int octeon_mdiobus_probe(struct platform_device *pdev) 25d967b72a92d7 David Daney 2009-10-14 17 { 1eefee901fca02 David Daney 2016-03-11 18 struct cavium_mdiobus *bus; 35d2aeac9810ca Andrew Lunn 2016-01-06 19 struct mii_bus *mii_bus; 2fd46f47be0f96 David Daney 2012-07-05 20 struct resource *res_mem; 1eefee901fca02 David Daney 2016-03-11 21 resource_size_t mdio_phys; 1eefee901fca02 David Daney 2016-03-11 22 resource_size_t regsize; 6c17812d622a74 David Daney 2010-04-01 23 union cvmx_smix_en smi_en; 25d967b72a92d7 David Daney 2009-10-14 24 int err = -ENOENT; 25d967b72a92d7 David Daney 2009-10-14 25 35d2aeac9810ca Andrew Lunn 2016-01-06 26 mii_bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(*bus)); 35d2aeac9810ca Andrew Lunn 2016-01-06 27 if (!mii_bus) 25d967b72a92d7 David Daney 2009-10-14 28 return -ENOMEM; 25d967b72a92d7 David Daney 2009-10-14 29 2fd46f47be0f96 David Daney 2012-07-05 30 res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 2fd46f47be0f96 David Daney 2012-07-05 31 if (res_mem == NULL) { 2fd46f47be0f96 David Daney 2012-07-05 32 dev_err(&pdev->dev, "found no memory resource\n"); de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 33 return -ENXIO; 2fd46f47be0f96 David Daney 2012-07-05 34 } de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 35 35d2aeac9810ca Andrew Lunn 2016-01-06 36 bus = mii_bus->priv; 35d2aeac9810ca Andrew Lunn 2016-01-06 37 bus->mii_bus = mii_bus; 1eefee901fca02 David Daney 2016-03-11 38 mdio_phys = res_mem->start; 1eefee901fca02 David Daney 2016-03-11 39 regsize = resource_size(res_mem); de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 40 1eefee901fca02 David Daney 2016-03-11 41 if (!devm_request_mem_region(&pdev->dev, mdio_phys, regsize, 2fd46f47be0f96 David Daney 2012-07-05 42 res_mem->name)) { 2fd46f47be0f96 David Daney 2012-07-05 43 dev_err(&pdev->dev, "request_mem_region failed\n"); de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 44 return -ENXIO; 2fd46f47be0f96 David Daney 2012-07-05 45 } de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 46 2fd46f47be0f96 David Daney 2012-07-05 47 bus->register_base = 1eefee901fca02 David Daney 2016-03-11 @48 (u64)devm_ioremap(&pdev->dev, mdio_phys, regsize); de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 49 if (!bus->register_base) { de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 50 dev_err(&pdev->dev, "dev_ioremap failed\n"); de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 51 return -ENOMEM; de9e397e40f56b Radha Mohan Chintakuntla 2015-07-28 52 } 25d967b72a92d7 David Daney 2009-10-14 53 6c17812d622a74 David Daney 2010-04-01 54 smi_en.u64 = 0; 6c17812d622a74 David Daney 2010-04-01 55 smi_en.s.en = 1; a6d678645210f1 Radha Mohan Chintakuntla 2015-07-28 @56 oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN); 25d967b72a92d7 David Daney 2009-10-14 57 1eefee901fca02 David Daney 2016-03-11 58 bus->mii_bus->name = KBUILD_MODNAME; 2fd46f47be0f96 David Daney 2012-07-05 59 snprintf(bus->mii_bus->id, MII_BUS_ID_SIZE, "%llx", bus->register_base); 25d967b72a92d7 David Daney 2009-10-14 60 bus->mii_bus->parent = &pdev->dev; 25d967b72a92d7 David Daney 2009-10-14 61 1eefee901fca02 David Daney 2016-03-11 62 bus->mii_bus->read = cavium_mdiobus_read; 1eefee901fca02 David Daney 2016-03-11 63 bus->mii_bus->write = cavium_mdiobus_write; 25d967b72a92d7 David Daney 2009-10-14 64 f8825669b3165b Libo Chen 2013-08-21 65 platform_set_drvdata(pdev, bus); 25d967b72a92d7 David Daney 2009-10-14 66 2fd46f47be0f96 David Daney 2012-07-05 67 err = of_mdiobus_register(bus->mii_bus, pdev->dev.of_node); 25d967b72a92d7 David Daney 2009-10-14 68 if (err) 2fd46f47be0f96 David Daney 2012-07-05 69 goto fail_register; 25d967b72a92d7 David Daney 2009-10-14 70 1eefee901fca02 David Daney 2016-03-11 71 dev_info(&pdev->dev, "Probed\n"); 25d967b72a92d7 David Daney 2009-10-14 72 25d967b72a92d7 David Daney 2009-10-14 73 return 0; 2fd46f47be0f96 David Daney 2012-07-05 74 fail_register: 25d967b72a92d7 David Daney 2009-10-14 75 mdiobus_free(bus->mii_bus); 6c17812d622a74 David Daney 2010-04-01 76 smi_en.u64 = 0; a6d678645210f1 Radha Mohan Chintakuntla 2015-07-28 77 oct_mdio_writeq(smi_en.u64, bus->register_base + SMI_EN); 25d967b72a92d7 David Daney 2009-10-14 78 return err; 25d967b72a92d7 David Daney 2009-10-14 79 } 25d967b72a92d7 David Daney 2009-10-14 80 :::::: The code at line 48 was first introduced by commit :::::: 1eefee901fca0208b8a56f20cdc134e2b8638ae7 phy: mdio-octeon: Refactor into two files/modules :::::: TO: David Daney <david.da...@cavium.com> :::::: CC: David S. Miller <da...@davemloft.net> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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