linux-kernel - Re: [PATCH v4 5/5] i3c: hub: p3h2x4x: Add support for NXP P3H2x4x I3C hub functionality

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Message-ID: <202601150056.yaKfBjXc-lkp@intel.com>
Date: Thu, 15 Jan 2026 00:58:48 +0800
From: kernel test robot <lkp@...el.com>
To: Aman Kumar Pandey <aman.kumarpandey@....com>,
	linux-kernel@...r.kernel.org, linux-i3c@...ts.infradead.org,
	alexandre.belloni@...tlin.com, krzk+dt@...nel.org, robh@...nel.org,
	conor+dt@...nel.org, devicetree@...r.kernel.org, broonie@...nel.org,
	lee@...nel.org, Frank.Li@....com, lgirdwood@...il.com
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	vikash.bansal@....com, priyanka.jain@....com,
	shashank.rebbapragada@....com,
	Aman Kumar Pandey <aman.kumarpandey@....com>
Subject: Re: [PATCH v4 5/5] i3c: hub: p3h2x4x: Add support for NXP P3H2x4x
 I3C hub functionality

Hi Aman,

kernel test robot noticed the following build errors:

[auto build test ERROR on i3c/i3c/next]
[also build test ERROR on lee-mfd/for-mfd-next lee-mfd/for-mfd-fixes broonie-regulator/for-next linus/master v6.19-rc5 next-20260114]
[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/Aman-Kumar-Pandey/dt-bindings-i3c-Add-NXP-P3H2x4x-i3c-hub-support/20260113-195318
base:   https://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux.git i3c/next
patch link:    https://lore.kernel.org/r/20260113114529.1692213-5-aman.kumarpandey%40nxp.com
patch subject: [PATCH v4 5/5] i3c: hub: p3h2x4x: Add support for NXP P3H2x4x I3C hub functionality
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20260115/202601150056.yaKfBjXc-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260115/202601150056.yaKfBjXc-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/202601150056.yaKfBjXc-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/i3c/hub/p3h2840_i3c_hub_common.c:51:11: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      51 |         pullup = P3H2x4x_TP0145_PULLUP_CONF(p3h2x4x_pullup_dt_to_reg
         |                  ^
   drivers/i3c/hub/p3h2840_i3c_hub.h:64:3: note: expanded from macro 'P3H2x4x_TP0145_PULLUP_CONF'
      64 |                 FIELD_PREP(P3H2x4x_TP0145_PULLUP_CONF_MASK, x)
         |                 ^
   drivers/i3c/hub/p3h2840_i3c_hub_common.c:80:16: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      80 |         io_strength = P3H2x4x_CP0_IO_STRENGTH(p3h2x4x_io_strength_dt_to_reg
         |                       ^
   drivers/i3c/hub/p3h2840_i3c_hub.h:51:3: note: expanded from macro 'P3H2x4x_CP0_IO_STRENGTH'
      51 |                 FIELD_PREP(P3H2x4x_CP0_IO_STRENGTH_MASK, x)
         |                 ^
   2 errors generated.


vim +/FIELD_PREP +51 drivers/i3c/hub/p3h2840_i3c_hub_common.c

    45	
    46	static int p3h2x4x_configure_pullup(struct device *dev)
    47	{
    48		struct p3h2x4x_i3c_hub_dev *p3h2x4x_i3c_hub = dev_get_drvdata(dev);
    49		u8 pullup;
    50	
  > 51		pullup = P3H2x4x_TP0145_PULLUP_CONF(p3h2x4x_pullup_dt_to_reg
    52							(p3h2x4x_i3c_hub->hub_config.tp0145_pullup));
    53	
    54		pullup |= P3H2x4x_TP2367_PULLUP_CONF(p3h2x4x_pullup_dt_to_reg
    55							(p3h2x4x_i3c_hub->hub_config.tp2367_pullup));
    56	
    57		return regmap_update_bits(p3h2x4x_i3c_hub->regmap, P3H2x4x_LDO_AND_PULLUP_CONF,
    58								  P3H2x4x_PULLUP_CONF_MASK, pullup);
    59	}
    60	

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