Re: [PATCH v3] net: mdiobus: Add a function to deassert reset

[kernel test robot <lkp@intel.com>]

Hi Yan,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]
[also build test ERROR on net/main linus/master v6.4-rc1 next-20230510]
[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/Yan-Wang/net-mdiobus-Add-a-function-to-deassert-reset/20230510-161736
base:   net-next/main
patch link:    https://lore.kernel.org/r/KL1PR01MB5448A33A549CDAD7D68945B9E6779%40KL1PR01MB5448.apcprd01.prod.exchangelabs.com
patch subject: [PATCH v3] net: mdiobus: Add a function to deassert reset
config: hexagon-randconfig-r045-20230509 (https://download.01.org/0day-ci/archive/20230510/202305101702.4xW6vT72-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111)
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/f7ded94d887d1020adb4813c2b1025142288e882
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yan-Wang/net-mdiobus-Add-a-function-to-deassert-reset/20230510-161736
        git checkout f7ded94d887d1020adb4813c2b1025142288e882
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/net/mdio/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305101702.4xW6vT72-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/net/mdio/fwnode_mdio.c:10:
   In file included from include/linux/fwnode_mdio.h:9:
   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:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           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'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from drivers/net/mdio/fwnode_mdio.c:10:
   In file included from include/linux/fwnode_mdio.h:9:
   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:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           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'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from drivers/net/mdio/fwnode_mdio.c:10:
   In file included from include/linux/fwnode_mdio.h:9:
   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:13:
   In file included from arch/hexagon/include/asm/io.h:334:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
>> drivers/net/mdio/fwnode_mdio.c:64:10: error: call to undeclared function 'fwnode_gpiod_get_index'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           reset = fwnode_gpiod_get_index(fwnode, "reset", 0, GPIOD_OUT_HIGH, NULL);
                   ^
>> drivers/net/mdio/fwnode_mdio.c:64:53: error: use of undeclared identifier 'GPIOD_OUT_HIGH'
           reset = fwnode_gpiod_get_index(fwnode, "reset", 0, GPIOD_OUT_HIGH, NULL);
                                                              ^
>> drivers/net/mdio/fwnode_mdio.c:69:2: error: call to undeclared function 'gpiod_set_value_cansleep'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           gpiod_set_value_cansleep(reset, 0);
           ^
>> drivers/net/mdio/fwnode_mdio.c:71:2: error: call to undeclared function 'gpiod_put'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           gpiod_put(reset);
           ^
   6 warnings and 4 errors generated.


vim +/fwnode_gpiod_get_index +64 drivers/net/mdio/fwnode_mdio.c

    59	
    60	static void fwnode_mdiobus_pre_enable_phy(struct fwnode_handle *fwnode)
    61	{
    62		struct gpio_desc *reset;
    63	
  > 64		reset = fwnode_gpiod_get_index(fwnode, "reset", 0, GPIOD_OUT_HIGH, NULL);
    65		if (IS_ERR(reset) && PTR_ERR(reset) != -EPROBE_DEFER)
    66			return;
    67	
    68		usleep_range(100, 200);
  > 69		gpiod_set_value_cansleep(reset, 0);
    70		/*Release the reset pin,it needs to be registered with the PHY.*/
  > 71		gpiod_put(reset);
    72	}
    73	

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