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Subject[kabel:net-queue-work 83/83] drivers/net/phy/mdio_debugfs.c:43:5: error: no previous prototype for 'mdiobus_register_debugfs'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kabel/linux.git net-queue-work
head: c87c6f80c5fd6c1175c9c513933f95fdd0ad9959
commit: c87c6f80c5fd6c1175c9c513933f95fdd0ad9959 [83/83] net: mdiobus: add support to access PHY registers via debugfs [*not for mainline*]
config: s390-allmodconfig (attached as .config)
compiler: s390-linux-gcc (GCC) 11.2.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/kabel/linux.git/commit/?id=c87c6f80c5fd6c1175c9c513933f95fdd0ad9959
git remote add kabel https://git.kernel.org/pub/scm/linux/kernel/git/kabel/linux.git
git fetch --no-tags kabel net-queue-work
git checkout c87c6f80c5fd6c1175c9c513933f95fdd0ad9959
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=s390

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/net/phy/mdio_debugfs.c:43:5: error: no previous prototype for 'mdiobus_register_debugfs' [-Werror=missing-prototypes]
43 | int mdiobus_register_debugfs(struct mii_bus *bus)
| ^~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/phy/mdio_debugfs.c:65:6: error: no previous prototype for 'mdiobus_unregister_debugfs' [-Werror=missing-prototypes]
65 | void mdiobus_unregister_debugfs(struct mii_bus *bus)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/phy/mdio_debugfs.c:76:5: error: no previous prototype for 'mdiobus_debugfs_init' [-Werror=missing-prototypes]
76 | int mdiobus_debugfs_init(void)
| ^~~~~~~~~~~~~~~~~~~~
>> drivers/net/phy/mdio_debugfs.c:89:6: error: no previous prototype for 'mdiobus_debugfs_exit' [-Werror=missing-prototypes]
89 | void mdiobus_debugfs_exit(void)
| ^~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors


vim +/mdiobus_register_debugfs +43 drivers/net/phy/mdio_debugfs.c

42
> 43 int mdiobus_register_debugfs(struct mii_bus *bus)
44 {
45 struct dentry *dir, *entry;
46
47 dir = debugfs_create_dir(dev_name(&bus->dev), mdiobus_dentry);
48 if (IS_ERR(dir))
49 return PTR_ERR(dir);
50
51 debugfs_create_u32("addr", 0600, dir, &bus->debug_addr);
52 debugfs_create_u32("reg", 0600, dir, &bus->debug_reg);
53
54 entry = debugfs_create_file_unsafe("val", 0600, dir, bus, &val_fops);
55 if (IS_ERR(entry))
56 goto fail;
57
58 return 0;
59
60 fail:
61 debugfs_remove_recursive(dir);
62 return PTR_ERR(entry);
63 }
64
> 65 void mdiobus_unregister_debugfs(struct mii_bus *bus)
66 {
67 struct dentry *dir;
68
69 dir = debugfs_lookup(dev_name(&bus->dev), mdiobus_dentry);
70 if (!dir)
71 return;
72
73 debugfs_remove_recursive(dir);
74 }
75
> 76 int mdiobus_debugfs_init(void)
77 {
78 struct dentry *dentry;
79
80 dentry = debugfs_create_dir("mdio_bus", NULL);
81 if (IS_ERR(dentry))
82 return PTR_ERR(dentry);
83
84 mdiobus_dentry = dentry;
85
86 return 0;
87 }
88
> 89 void mdiobus_debugfs_exit(void)

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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