Re: [PATCH v2] soc: imx: Add SoC device register for i.MX9

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

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on shawnguo/for-next]
[also build test WARNING on linus/master v6.12-rc5 next-20241029]
[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/alice-guo-oss-nxp-com/soc-imx-Add-SoC-device-register-for-i-MX9/20241029-163718
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next
patch link:    https://lore.kernel.org/r/20241029083406.3888861-1-alice.guo%40oss.nxp.com
patch subject: [PATCH v2] soc: imx: Add SoC device register for i.MX9
config: i386-buildonly-randconfig-003-20241029 (https://download.01.org/0day-ci/archive/20241030/202410300140.9q3lC7M2-lkp@intel.com/config)
compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241030/202410300140.9q3lC7M2-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/202410300140.9q3lC7M2-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/soc/imx/soc-imx9.c:48:44: warning: format specifies type 'int' but the argument has type 'unsigned long' [-Wformat]
      48 |                 pr_err("%s: SMC failed: %d\n", __func__, res.a0);
         |                                         ~~               ^~~~~~
         |                                         %lu
   include/linux/printk.h:533:33: note: expanded from macro 'pr_err'
     533 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |                                ~~~     ^~~~~~~~~~~
   include/linux/printk.h:490:60: note: expanded from macro 'printk'
     490 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
         |                                                     ~~~    ^~~~~~~~~~~
   include/linux/printk.h:462:19: note: expanded from macro 'printk_index_wrap'
     462 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ~~~~    ^~~~~~~~~~~
   1 warning generated.


vim +48 drivers/soc/imx/soc-imx9.c

    17	
    18	static int imx9_soc_device_register(void)
    19	{
    20		struct soc_device_attribute *attr;
    21		struct arm_smccc_res res;
    22		struct soc_device *sdev;
    23		u32 soc_id, rev_major, rev_minor;
    24		u64 uid127_64, uid63_0;
    25		int err;
    26	
    27		attr = kzalloc(sizeof(*attr), GFP_KERNEL);
    28		if (!attr)
    29			return -ENOMEM;
    30	
    31		err = of_property_read_string(of_root, "model", &attr->machine);
    32		if (err) {
    33			pr_err("%s: missing model property: %d\n", __func__, err);
    34			goto attr;
    35		}
    36	
    37		attr->family = kasprintf(GFP_KERNEL, "Freescale i.MX");
    38	
    39		/*
    40		 * Retrieve the soc id, rev & uid info:
    41		 * res.a1[31:16]: soc revision;
    42		 * res.a1[15:0]: soc id;
    43		 * res.a2: uid[127:64];
    44		 * res.a3: uid[63:0];
    45		 */
    46		arm_smccc_smc(IMX_SIP_GET_SOC_INFO, 0, 0, 0, 0, 0, 0, 0, &res);
    47		if (res.a0 != SMCCC_RET_SUCCESS) {
  > 48			pr_err("%s: SMC failed: %d\n", __func__, res.a0);
    49			err = res.a0;
    50			goto family;
    51		}
    52	
    53		soc_id = SOC_ID(res.a1);
    54		rev_major = SOC_REV_MAJOR(res.a1);
    55		rev_minor = SOC_REV_MINOR(res.a1);
    56	
    57		attr->soc_id = kasprintf(GFP_KERNEL, "i.MX%2x", soc_id);
    58		attr->revision = kasprintf(GFP_KERNEL, "%d.%d", rev_major, rev_minor);
    59	
    60		uid127_64 = res.a2;
    61		uid63_0 = res.a3;
    62		attr->serial_number = kasprintf(GFP_KERNEL, "%016llx%016llx", uid127_64, uid63_0);
    63	
    64		sdev = soc_device_register(attr);
    65		if (IS_ERR(sdev)) {
    66			err = PTR_ERR(sdev);
    67			goto soc_id;
    68		}
    69	
    70		return 0;
    71	
    72	soc_id:
    73		kfree(attr->soc_id);
    74		kfree(attr->serial_number);
    75		kfree(attr->revision);
    76	family:
    77		kfree(attr->family);
    78	attr:
    79		kfree(attr);
    80		return err;
    81	}
    82	

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