Re: [PATCH v2 3/4] net: Let the active time stamping layer be selectable.
From: kernel test robot
Date: Fri Mar 03 2023 - 13:55:39 EST
Hi Köry,
I love your patch! Perhaps something to improve:
[auto build test WARNING on v6.2]
[also build test WARNING on next-20230303]
[cannot apply to net/master net-next/master horms-ipvs/master linus/master]
[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/K-ry-Maincent/net-ethtool-Refactor-identical-get_ts_info-implementations/20230304-004527
patch link: https://lore.kernel.org/r/20230303164248.499286-4-kory.maincent%40bootlin.com
patch subject: [PATCH v2 3/4] net: Let the active time stamping layer be selectable.
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230304/202303040219.nmNWbGrY-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
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://github.com/intel-lab-lkp/linux/commit/00a0656f9b222cfeb7c1253a4a2771b1f63b5c9b
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review K-ry-Maincent/net-ethtool-Refactor-identical-get_ts_info-implementations/20230304-004527
git checkout 00a0656f9b222cfeb7c1253a4a2771b1f63b5c9b
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash net/core/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303040219.nmNWbGrY-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
net/core/net-sysfs.c: In function 'available_timestamping_providers_show':
net/core/net-sysfs.c:627:35: warning: variable 'ops' set but not used [-Wunused-but-set-variable]
627 | const struct ethtool_ops *ops;
| ^~~
net/core/net-sysfs.c: In function 'current_timestamping_provider_show':
>> net/core/net-sysfs.c:659:28: warning: variable 'phydev' set but not used [-Wunused-but-set-variable]
659 | struct phy_device *phydev;
| ^~~~~~
net/core/net-sysfs.c:657:35: warning: variable 'ops' set but not used [-Wunused-but-set-variable]
657 | const struct ethtool_ops *ops;
| ^~~
vim +/phydev +659 net/core/net-sysfs.c
90d54e1c6ed12a Richard Cochran 2023-03-03 652
90d54e1c6ed12a Richard Cochran 2023-03-03 653 static ssize_t current_timestamping_provider_show(struct device *dev,
90d54e1c6ed12a Richard Cochran 2023-03-03 654 struct device_attribute *attr,
90d54e1c6ed12a Richard Cochran 2023-03-03 655 char *buf)
90d54e1c6ed12a Richard Cochran 2023-03-03 656 {
90d54e1c6ed12a Richard Cochran 2023-03-03 657 const struct ethtool_ops *ops;
90d54e1c6ed12a Richard Cochran 2023-03-03 658 struct net_device *netdev;
90d54e1c6ed12a Richard Cochran 2023-03-03 @659 struct phy_device *phydev;
90d54e1c6ed12a Richard Cochran 2023-03-03 660 int ret;
90d54e1c6ed12a Richard Cochran 2023-03-03 661
90d54e1c6ed12a Richard Cochran 2023-03-03 662 netdev = to_net_dev(dev);
90d54e1c6ed12a Richard Cochran 2023-03-03 663 phydev = netdev->phydev;
90d54e1c6ed12a Richard Cochran 2023-03-03 664 ops = netdev->ethtool_ops;
90d54e1c6ed12a Richard Cochran 2023-03-03 665
90d54e1c6ed12a Richard Cochran 2023-03-03 666 if (!rtnl_trylock())
90d54e1c6ed12a Richard Cochran 2023-03-03 667 return restart_syscall();
90d54e1c6ed12a Richard Cochran 2023-03-03 668
00a0656f9b222c Richard Cochran 2023-03-03 669 switch (netdev->selected_timestamping_layer) {
00a0656f9b222c Richard Cochran 2023-03-03 670 case MAC_TIMESTAMPING:
90d54e1c6ed12a Richard Cochran 2023-03-03 671 ret = sprintf(buf, "%s\n", "mac");
00a0656f9b222c Richard Cochran 2023-03-03 672 break;
00a0656f9b222c Richard Cochran 2023-03-03 673 case PHY_TIMESTAMPING:
00a0656f9b222c Richard Cochran 2023-03-03 674 ret = sprintf(buf, "%s\n", "phy");
00a0656f9b222c Richard Cochran 2023-03-03 675 break;
90d54e1c6ed12a Richard Cochran 2023-03-03 676 }
90d54e1c6ed12a Richard Cochran 2023-03-03 677
90d54e1c6ed12a Richard Cochran 2023-03-03 678 rtnl_unlock();
90d54e1c6ed12a Richard Cochran 2023-03-03 679
90d54e1c6ed12a Richard Cochran 2023-03-03 680 return ret;
90d54e1c6ed12a Richard Cochran 2023-03-03 681 }
00a0656f9b222c Richard Cochran 2023-03-03 682
--
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https://github.com/intel/lkp-tests