Re: [PATCH 2/3] drivers: gpio: siul2-s32g2: add NXP S32G2/S32G3 SoCs support

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

Hi Andrei,

kernel test robot noticed the following build warnings:

[auto build test WARNING on brgl/gpio/for-next]
[also build test WARNING on robh/for-next linus/master v6.11-rc5 next-20240826]
[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/Andrei-Stefanescu/dt-bindings-gpio-add-schema-for-NXP-S32G2-S32G3-SoCs/20240826-164853
base:   https://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git gpio/for-next
patch link:    https://lore.kernel.org/r/20240826084214.2368673-3-andrei.stefanescu%40oss.nxp.com
patch subject: [PATCH 2/3] drivers: gpio: siul2-s32g2: add NXP S32G2/S32G3 SoCs support
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240827/202408271011.hpcNokNu-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 08e5a1de8227512d4774a534b91cb2353cef6284)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408271011.hpcNokNu-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/202408271011.hpcNokNu-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/gpio/gpio-siul2-s32g2.c:11:
   In file included from include/linux/io.h:14:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     548 |         val = __raw_readb(PCI_IOBASE + addr);
         |                           ~~~~~~~~~~ ^
   include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     561 |         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/gpio/gpio-siul2-s32g2.c:11:
   In file included from include/linux/io.h:14:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     574 |         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/gpio/gpio-siul2-s32g2.c:11:
   In file included from include/linux/io.h:14:
   In file included from arch/hexagon/include/asm/io.h:328:
   include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     585 |         __raw_writeb(value, PCI_IOBASE + addr);
         |                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
>> drivers/gpio/gpio-siul2-s32g2.c:342:5: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
     341 |                                 "Failed to initialize opad2%lu regmap config\n",
         |                                                            ~~~
         |                                                            %zu
     342 |                                 i);
         |                                 ^
   include/linux/dev_printk.h:154:65: note: expanded from macro 'dev_err'
     154 |         dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                                                                ~~~     ^~~~~~~~~~~
   include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap'
     110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
         |                              ~~~    ^~~~~~~~~~~
   drivers/gpio/gpio-siul2-s32g2.c:351:5: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
     350 |                                 "Failed to initialize ipad2%lu regmap config\n",
         |                                                            ~~~
         |                                                            %zu
     351 |                                 i);
         |                                 ^
   include/linux/dev_printk.h:154:65: note: expanded from macro 'dev_err'
     154 |         dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                                                                ~~~     ^~~~~~~~~~~
   include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap'
     110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
         |                              ~~~    ^~~~~~~~~~~
   drivers/gpio/gpio-siul2-s32g2.c:499:5: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
     498 |                                 "unable to get pinspec %lu from device tree\n",
         |                                                        ~~~
         |                                                        %zu
     499 |                                 i);
         |                                 ^
   include/linux/dev_printk.h:154:65: note: expanded from macro 'dev_err'
     154 |         dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                                                                ~~~     ^~~~~~~~~~~
   include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap'
     110 |                 _p_func(dev, fmt, ##__VA_ARGS__);                       \
         |                              ~~~    ^~~~~~~~~~~
   9 warnings generated.


vim +342 drivers/gpio/gpio-siul2-s32g2.c

   329	
   330	static int siul2_gpio_pads_init(struct platform_device *pdev,
   331					struct siul2_gpio_dev *gpio_dev)
   332	{
   333		struct device *dev = &pdev->dev;
   334		size_t i;
   335	
   336		for (i = 0; i < ARRAY_SIZE(gpio_dev->siul2); i++) {
   337			gpio_dev->siul2[i].opadmap = init_padregmap(pdev, gpio_dev, i,
   338								    false);
   339			if (IS_ERR(gpio_dev->siul2[i].opadmap)) {
   340				dev_err(dev,
   341					"Failed to initialize opad2%lu regmap config\n",
 > 342					i);
   343				return PTR_ERR(gpio_dev->siul2[i].opadmap);
   344			}
   345	
   346			gpio_dev->siul2[i].ipadmap = init_padregmap(pdev, gpio_dev, i,
   347								    true);
   348			if (IS_ERR(gpio_dev->siul2[i].ipadmap)) {
   349				dev_err(dev,
   350					"Failed to initialize ipad2%lu regmap config\n",
   351					i);
   352				return PTR_ERR(gpio_dev->siul2[i].ipadmap);
   353			}
   354		}
   355	
   356		return 0;
   357	}
   358	

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