Re: [PATCH v4 2/5] clk: imx: clk-audiomix: Add reset controller

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

Hi Shengjiu,

kernel test robot noticed the following build errors:

[auto build test ERROR on abelvesa/clk/imx]
[also build test ERROR on linus/master next-20240520]
[cannot apply to pza/reset/next shawnguo/for-next robh/for-next pza/imx-drm/next v6.9]
[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/Shengjiu-Wang/dt-bindings-clock-imx8mp-Add-reset-cells-property/20240520-153230
base:   https://git.kernel.org/pub/scm/linux/kernel/git/abelvesa/linux.git clk/imx
patch link:    https://lore.kernel.org/r/1716188963-16175-3-git-send-email-shengjiu.wang%40nxp.com
patch subject: [PATCH v4 2/5] clk: imx: clk-audiomix: Add reset controller
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20240521/202405210036.hMLQ7OGl-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project fa9b1be45088dce1e4b602d451f118128b94237b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240521/202405210036.hMLQ7OGl-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405210036.hMLQ7OGl-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/clk/imx/clk-imx8mp-audiomix.c:11:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     547 |         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]
     560 |         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/clk/imx/clk-imx8mp-audiomix.c:11:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     573 |         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/clk/imx/clk-imx8mp-audiomix.c:11:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     584 |         __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]
     594 |         __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]
     604 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
>> drivers/clk/imx/clk-imx8mp-audiomix.c:235:2: error: call to undeclared function 'kfree'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     235 |         kfree(adev);
         |         ^
   drivers/clk/imx/clk-imx8mp-audiomix.c:235:2: note: did you mean 'vfree'?
   include/linux/vmalloc.h:162:13: note: 'vfree' declared here
     162 | extern void vfree(const void *addr);
         |             ^
>> drivers/clk/imx/clk-imx8mp-audiomix.c:244:9: error: call to undeclared function 'kzalloc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     244 |         adev = kzalloc(sizeof(*adev), GFP_KERNEL);
         |                ^
   drivers/clk/imx/clk-imx8mp-audiomix.c:244:9: note: did you mean 'vzalloc'?
   include/linux/vmalloc.h:142:14: note: 'vzalloc' declared here
     142 | extern void *vzalloc(unsigned long size) __alloc_size(1);
         |              ^
>> drivers/clk/imx/clk-imx8mp-audiomix.c:244:7: error: incompatible integer to pointer conversion assigning to 'struct auxiliary_device *' from 'int' [-Wint-conversion]
     244 |         adev = kzalloc(sizeof(*adev), GFP_KERNEL);
         |              ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/clk/imx/clk-imx8mp-audiomix.c:254:3: error: call to undeclared function 'kfree'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     254 |                 kfree(adev);
         |                 ^
   drivers/clk/imx/clk-imx8mp-audiomix.c:261:3: error: call to undeclared function 'kfree'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     261 |                 kfree(adev);
         |                 ^
   6 warnings and 5 errors generated.


vim +/kfree +235 drivers/clk/imx/clk-imx8mp-audiomix.c

   230	
   231	static void clk_imx8mp_audiomix_reset_adev_release(struct device *dev)
   232	{
   233		struct auxiliary_device *adev = to_auxiliary_dev(dev);
   234	
 > 235		kfree(adev);
   236	}
   237	
   238	static int clk_imx8mp_audiomix_reset_controller_register(struct device *dev,
   239								 struct clk_imx8mp_audiomix_priv *priv)
   240	{
   241		struct auxiliary_device *adev;
   242		int ret;
   243	
 > 244		adev = kzalloc(sizeof(*adev), GFP_KERNEL);
   245		if (!adev)
   246			return -ENOMEM;
   247	
   248		adev->name = "reset";
   249		adev->dev.parent = dev;
   250		adev->dev.release = clk_imx8mp_audiomix_reset_adev_release;
   251	
   252		ret = auxiliary_device_init(adev);
   253		if (ret) {
   254			kfree(adev);
   255			return ret;
   256		}
   257	
   258		ret = auxiliary_device_add(adev);
   259		if (ret) {
   260			auxiliary_device_uninit(adev);
   261			kfree(adev);
   262			return ret;
   263		}
   264	
   265		return devm_add_action_or_reset(dev, clk_imx8mp_audiomix_reset_unregister_adev, adev);
   266	}
   267	

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