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Message-ID: <202408221523.6Cc0ADf9-lkp@intel.com>
Date: Thu, 22 Aug 2024 16:04:32 +0800
From: kernel test robot <lkp@...el.com>
To: Daniel Golle <daniel@...rotopia.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Christian Marangi <ansuelsmth@...il.com>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	Robert Marko <robimarko@...il.com>,
	Chad Monroe <chad.monroe@...ran.com>,
	John Crispin <john@...ozen.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next 2/2] net: phy: aquantia: allow forcing order of
 MDI pairs

Hi Daniel,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Daniel-Golle/net-phy-aquantia-allow-forcing-order-of-MDI-pairs/20240821-210717
base:   net-next/main
patch link:    https://lore.kernel.org/r/ed46220cc4c52d630fc481c8148fc749242c368d.1724244281.git.daniel%40makrotopia.org
patch subject: [PATCH net-next 2/2] net: phy: aquantia: allow forcing order of MDI pairs
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240822/202408221523.6Cc0ADf9-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 26670e7fa4f032a019d23d56c6a02926e854e8af)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240822/202408221523.6Cc0ADf9-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/202408221523.6Cc0ADf9-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/net/phy/aquantia/aquantia_main.c:15:
   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:2228:
   include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     514 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   In file included from drivers/net/phy/aquantia/aquantia_main.c:15:
   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/phy/aquantia/aquantia_main.c:15:
   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/phy/aquantia/aquantia_main.c:15:
   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/phy/aquantia/aquantia_main.c:483:5: warning: no previous prototype for function 'aqr107_config_mdi' [-Wmissing-prototypes]
     483 | int aqr107_config_mdi(struct phy_device *phydev)
         |     ^
   drivers/net/phy/aquantia/aquantia_main.c:483:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     483 | int aqr107_config_mdi(struct phy_device *phydev)
         | ^
         | static 
   8 warnings generated.


vim +/aqr107_config_mdi +483 drivers/net/phy/aquantia/aquantia_main.c

   482	
 > 483	int aqr107_config_mdi(struct phy_device *phydev)
   484	{
   485		struct device_node *np = phydev->mdio.dev.of_node;
   486		bool force_normal, force_reverse;
   487	
   488		force_normal = of_property_read_bool(np, "marvell,force-mdi-order-normal");
   489		force_reverse = of_property_read_bool(np, "marvell,force-mdi-order-reverse");
   490	
   491		if (force_normal && force_reverse)
   492			return -EINVAL;
   493	
   494		if (force_normal)
   495			return phy_modify_mmd(phydev, MDIO_MMD_PMAPMD, PMAPMD_RSVD_VEND_PROV,
   496					      PMAPMD_RSVD_VEND_PROV_MDI_CONF,
   497					      PMAPMD_RSVD_VEND_PROV_MDI_FORCE);
   498	
   499		if (force_reverse)
   500			return phy_modify_mmd(phydev, MDIO_MMD_PMAPMD, PMAPMD_RSVD_VEND_PROV,
   501					      PMAPMD_RSVD_VEND_PROV_MDI_CONF,
   502					      PMAPMD_RSVD_VEND_PROV_MDI_REVERSE |
   503					      PMAPMD_RSVD_VEND_PROV_MDI_FORCE);
   504	
   505		return 0;
   506	}
   507	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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