Re: [PATCH net-next 05/11] net: enetc: add enetc-pf-common driver support

From: kernel test robot
Date: Thu Oct 10 2024 - 13:10:48 EST

Hi Wei,

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/Wei-Fang/dt-bindings-net-add-compatible-string-for-i-MX95-EMDIO/20241009-181113
base: net-next/main
patch link: https://lore.kernel.org/r/20241009095116.147412-6-wei.fang%40nxp.com
patch subject: [PATCH net-next 05/11] net: enetc: add enetc-pf-common driver support
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20241011/202410110019.xUSLtcAC-lkp@xxxxxxxxx/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 70e0a7e7e6a8541bcc46908c592eed561850e416)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241011/202410110019.xUSLtcAC-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410110019.xUSLtcAC-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

In file included from drivers/net/ethernet/freescale/enetc/enetc_pf_common.c:3:
In file included from include/linux/fsl/enetc_mdio.h:7:
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:2213:
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from drivers/net/ethernet/freescale/enetc/enetc_pf_common.c:3:
In file included from include/linux/fsl/enetc_mdio.h:7:
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/ethernet/freescale/enetc/enetc_pf_common.c:3:
In file included from include/linux/fsl/enetc_mdio.h:7:
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/ethernet/freescale/enetc/enetc_pf_common.c:3:
In file included from include/linux/fsl/enetc_mdio.h:7:
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);
| ~~~~~~~~~~ ^
In file included from drivers/net/ethernet/freescale/enetc/enetc_pf_common.c:3:
>> include/linux/fsl/enetc_mdio.h:62:18: warning: no previous prototype for function 'enetc_hw_alloc' [-Wmissing-prototypes]
62 | struct enetc_hw *enetc_hw_alloc(struct device *dev, void __iomem *port_regs)
| ^
include/linux/fsl/enetc_mdio.h:62:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
62 | struct enetc_hw *enetc_hw_alloc(struct device *dev, void __iomem *port_regs)
| ^
| static
8 warnings generated.

Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for MODVERSIONS
Depends on [n]: MODULES [=y] && !COMPILE_TEST [=y]
Selected by [y]:
- RANDSTRUCT_FULL [=y] && (CC_HAS_RANDSTRUCT [=y] || GCC_PLUGINS [=n]) && MODULES [=y]
WARNING: unmet direct dependencies detected for GET_FREE_REGION
Depends on [n]: SPARSEMEM [=n]
Selected by [m]:
- RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=m]


vim +/enetc_hw_alloc +62 include/linux/fsl/enetc_mdio.h

6517798dd3432a Claudiu Manoil 2020-01-06 49
80e87442e69ba8 Andrew Lunn 2023-01-12 50 static inline int enetc_mdio_read_c22(struct mii_bus *bus, int phy_id,
80e87442e69ba8 Andrew Lunn 2023-01-12 51 int regnum)
6517798dd3432a Claudiu Manoil 2020-01-06 52 { return -EINVAL; }
80e87442e69ba8 Andrew Lunn 2023-01-12 53 static inline int enetc_mdio_write_c22(struct mii_bus *bus, int phy_id,
80e87442e69ba8 Andrew Lunn 2023-01-12 54 int regnum, u16 value)
80e87442e69ba8 Andrew Lunn 2023-01-12 55 { return -EINVAL; }
80e87442e69ba8 Andrew Lunn 2023-01-12 56 static inline int enetc_mdio_read_c45(struct mii_bus *bus, int phy_id,
80e87442e69ba8 Andrew Lunn 2023-01-12 57 int devad, int regnum)
80e87442e69ba8 Andrew Lunn 2023-01-12 58 { return -EINVAL; }
80e87442e69ba8 Andrew Lunn 2023-01-12 59 static inline int enetc_mdio_write_c45(struct mii_bus *bus, int phy_id,
80e87442e69ba8 Andrew Lunn 2023-01-12 60 int devad, int regnum, u16 value)
6517798dd3432a Claudiu Manoil 2020-01-06 61 { return -EINVAL; }
6517798dd3432a Claudiu Manoil 2020-01-06 @62 struct enetc_hw *enetc_hw_alloc(struct device *dev, void __iomem *port_regs)
6517798dd3432a Claudiu Manoil 2020-01-06 63 { return ERR_PTR(-EINVAL); }
6517798dd3432a Claudiu Manoil 2020-01-06 64

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