[android-common:android15-6.6-desktop 14612/15124] drivers/media/platform/camx/cam_sensor_module/cam_eeprom/cam_eeprom_dev.c:159:11: error: incompatible pointer to integer conversion returning 'void *' from a function with result type 'int'

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

Hi Ricardo,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android15-6.6-desktop
head:   ad8dacd5a4263ddf51685be3c2190a341c26869b
commit: c7f8bcb2b8858a5291cd7c06cc48e6520bbd7c8a [14612/15124] CHROMIUM: media: camx: Cache eeprom content
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20240914/202409142225.0nfFOjTM-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project bf684034844c660b778f0eba103582f582b710c9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240914/202409142225.0nfFOjTM-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/202409142225.0nfFOjTM-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/media/platform/camx/cam_sensor_module/cam_eeprom/cam_eeprom_dev.c:18:
   In file included from drivers/media/platform/camx/cam_sensor_module/cam_eeprom/cam_eeprom_dev.h:16:
   In file included from include/linux/i2c.h:13:
   In file included from include/linux/acpi.h:37:
   In file included from include/acpi/acpi_io.h:7:
   In file included from arch/arm64/include/asm/acpi.h:14:
   In file included from include/linux/memblock.h:12:
   In file included from include/linux/mm.h:2222:
   include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     508 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     509 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     515 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     516 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     522 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     527 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     528 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     536 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     537 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/platform/camx/cam_sensor_module/cam_eeprom/cam_eeprom_dev.c:159:11: error: incompatible pointer to integer conversion returning 'void *' from a function with result type 'int' [-Wint-conversion]
     159 |                         return ERR_PTR(ret);
         |                                ^~~~~~~~~~~~
   5 warnings and 1 error generated.


vim +159 drivers/media/platform/camx/cam_sensor_module/cam_eeprom/cam_eeprom_dev.c

   141	
   142	static int cam_eeprom_cache_content(struct cam_eeprom_ctrl_t *e_ctrl)
   143	{
   144		int ret;
   145		int i;
   146	
   147		e_ctrl->eeprom_content = kzalloc(e_ctrl->memory_bytes, GFP_KERNEL);
   148		if (!e_ctrl->eeprom_content)
   149			return -ENOMEM;
   150	
   151		for (i = 0; i < e_ctrl->memory_bytes; i += I2C_REG_DATA_MAX) {
   152			int block = umin(I2C_REG_DATA_MAX, e_ctrl->memory_bytes - i);
   153	
   154			ret = cam_eeprom_nvmem_read(e_ctrl, i,
   155						    e_ctrl->eeprom_content + i, block);
   156			if (ret) {
   157				kfree(e_ctrl->eeprom_content);
   158				e_ctrl->eeprom_content = NULL;
 > 159				return ERR_PTR(ret);
   160			}
   161		}
   162	
   163		return 0;
   164	}
   165	

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