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Message-ID: <202601280753.G8XBwank-lkp@intel.com>
Date: Wed, 28 Jan 2026 07:16:51 +0800
From: kernel test robot <lkp@...el.com>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>, davem@...emloft.net,
Andrew Lunn <andrew@...n.ch>, Jakub Kicinski <kuba@...nel.org>,
Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
Russell King <linux@...linux.org.uk>,
Heiner Kallweit <hkallweit1@...il.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
thomas.petazzoni@...tlin.com,
Christophe Leroy <christophe.leroy@...roup.eu>,
Herve Codina <herve.codina@...tlin.com>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <vladimir.oltean@....com>,
Köry Maincent <kory.maincent@...tlin.com>,
Marek Behún <kabel@...nel.org>,
Oleksij Rempel <o.rempel@...gutronix.de>,
Nicolò Veronese <nicveronese@...il.com>,
Simon Horman <horms@...nel.org>, mwojtas@...omium.org,
Romain Gantois <romain.gantois@...tlin.com>,
Daniel Golle <daniel@...rotopia.org>,
Dimitri Fedrau <dimitri.fedrau@...bherr.com>
Subject: Re: [PATCH net-next 13/13] net: ethtool: Introduce ethtool command
to list ports
Hi Maxime,
kernel test robot noticed the following build errors:
[auto build test ERROR on net-next/main]
url: https://github.com/intel-lab-lkp/linux/commits/Maxime-Chevallier/net-phy-phy_port-Correctly-recompute-the-port-s-linkmodes/20260127-215318
base: net-next/main
patch link: https://lore.kernel.org/r/20260127134202.8208-14-maxime.chevallier%40bootlin.com
patch subject: [PATCH net-next 13/13] net: ethtool: Introduce ethtool command to list ports
config: um-defconfig (https://download.01.org/0day-ci/archive/20260128/202601280753.G8XBwank-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9b8addffa70cee5b2acc5454712d9cf78ce45710)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260128/202601280753.G8XBwank-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601280753.G8XBwank-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from net/core/dev.c:165:
>> include/linux/phy_link_topology.h:110:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
110 | phy_link_topo_get_port(struct net_device *dev, u32 port_id)
| ^
| int
>> include/linux/phy_link_topology.h:112:9: error: incompatible pointer to integer conversion returning 'void *' from a function with result type 'int' [-Wint-conversion]
112 | return NULL;
| ^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
8 | #define NULL ((void *)0)
| ^~~~~~~~~~~
In file included from net/core/dev.c:165:
include/linux/phy_link_topology.h:110:1: warning: no previous prototype for function 'phy_link_topo_get_port' [-Wmissing-prototypes]
110 | phy_link_topo_get_port(struct net_device *dev, u32 port_id)
| ^
include/linux/phy_link_topology.h:110:23: note: declare 'static' if the function is not intended to be used outside of this translation unit
110 | phy_link_topo_get_port(struct net_device *dev, u32 port_id)
| ^
| static
1 warning and 2 errors generated.
--
In file included from net/ethtool/port.c:11:
>> include/linux/phy_link_topology.h:110:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
110 | phy_link_topo_get_port(struct net_device *dev, u32 port_id)
| ^
| int
>> include/linux/phy_link_topology.h:112:9: error: incompatible pointer to integer conversion returning 'void *' from a function with result type 'int' [-Wint-conversion]
112 | return NULL;
| ^~~~
include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
8 | #define NULL ((void *)0)
| ^~~~~~~~~~~
In file included from net/ethtool/port.c:11:
include/linux/phy_link_topology.h:110:1: warning: no previous prototype for function 'phy_link_topo_get_port' [-Wmissing-prototypes]
110 | phy_link_topo_get_port(struct net_device *dev, u32 port_id)
| ^
include/linux/phy_link_topology.h:110:23: note: declare 'static' if the function is not intended to be used outside of this translation unit
110 | phy_link_topo_get_port(struct net_device *dev, u32 port_id)
| ^
| static
>> net/ethtool/port.c:70:7: error: incompatible integer to pointer conversion assigning to 'struct phy_port *' from 'int' [-Wint-conversion]
70 | port = phy_link_topo_get_port(req_info->dev, request->port_id);
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning and 3 errors generated.
vim +/int +110 include/linux/phy_link_topology.h
624ef6af11779e Maxime Chevallier 2026-01-27 109
624ef6af11779e Maxime Chevallier 2026-01-27 @110 phy_link_topo_get_port(struct net_device *dev, u32 port_id)
624ef6af11779e Maxime Chevallier 2026-01-27 111 {
624ef6af11779e Maxime Chevallier 2026-01-27 @112 return NULL;
624ef6af11779e Maxime Chevallier 2026-01-27 113 }
38496878690920 Maxime Chevallier 2024-08-21 114 #endif
38496878690920 Maxime Chevallier 2024-08-21 115
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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