Re: [PATCH v2 1/1] gpio: rockchip: Switch to use fwnode instead of of_node

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Hi Andy,

I love your patch! Yet something to improve:

[auto build test ERROR on rockchip/for-next]
[also build test ERROR on linus/master v6.0-rc3 next-20220831]
[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/Andy-Shevchenko/gpio-rockchip-Switch-to-use-fwnode-instead-of-of_node/20220831-214721
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next
config: loongarch-buildonly-randconfig-r003-20220830 (https://download.01.org/0day-ci/archive/20220901/202209010347.s5HFnZfF-lkp@xxxxxxxxx/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/1adf1d7efa2837b148a47d10749922358e6f1b8f
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Andy-Shevchenko/gpio-rockchip-Switch-to-use-fwnode-instead-of-of_node/20220831-214721
        git checkout 1adf1d7efa2837b148a47d10749922358e6f1b8f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=loongarch SHELL=/bin/bash drivers/gpio/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All error/warnings (new ones prefixed by >>):

   drivers/gpio/gpio-rockchip.c: In function 'rockchip_gpiolib_register':
>> drivers/gpio/gpio-rockchip.c:611:27: error: implicit declaration of function 'pinctrl_get'; did you mean 'of_pinctrl_get'? [-Werror=implicit-function-declaration]
     611 |                 pctldev = pinctrl_get(bank->dev->parent);
         |                           ^~~~~~~~~~~
         |                           of_pinctrl_get
>> drivers/gpio/gpio-rockchip.c:611:25: warning: assignment to 'struct pinctrl_dev *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     611 |                 pctldev = pinctrl_get(bank->dev->parent);
         |                         ^
   drivers/gpio/gpio-rockchip.c: In function 'rockchip_get_bank_data':
   drivers/gpio/gpio-rockchip.c:639:40: error: implicit declaration of function 'to_platform_device' [-Werror=implicit-function-declaration]
     639 |         struct platform_device *pdev = to_platform_device(bank->dev);
         |                                        ^~~~~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c:639:40: warning: initialization of 'struct platform_device *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
   drivers/gpio/gpio-rockchip.c:644:26: error: implicit declaration of function 'devm_platform_ioremap_resource'; did you mean 'devm_ioremap_resource'? [-Werror=implicit-function-declaration]
     644 |         bank->reg_base = devm_platform_ioremap_resource(pdev, 0);
         |                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                          devm_ioremap_resource
   drivers/gpio/gpio-rockchip.c:644:24: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     644 |         bank->reg_base = devm_platform_ioremap_resource(pdev, 0);
         |                        ^
   drivers/gpio/gpio-rockchip.c:648:21: error: implicit declaration of function 'platform_get_irq'; did you mean 'platform_notify'? [-Werror=implicit-function-declaration]
     648 |         bank->irq = platform_get_irq(pdev, 0);
         |                     ^~~~~~~~~~~~~~~~
         |                     platform_notify
   drivers/gpio/gpio-rockchip.c:641:25: warning: unused variable 'res' [-Wunused-variable]
     641 |         struct resource res;
         |                         ^~~
   drivers/gpio/gpio-rockchip.c: At top level:
   drivers/gpio/gpio-rockchip.c:696:39: warning: 'struct platform_device' declared inside parameter list will not be visible outside of this definition or declaration
     696 | static int rockchip_gpio_probe(struct platform_device *pdev)
         |                                       ^~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c: In function 'rockchip_gpio_probe':
   drivers/gpio/gpio-rockchip.c:698:35: error: invalid use of undefined type 'struct platform_device'
     698 |         struct device *dev = &pdev->dev;
         |                                   ^~
   drivers/gpio/gpio-rockchip.c:709:17: warning: assignment to 'struct pinctrl_dev *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     709 |         pctldev = pinctrl_get(dev->parent);
         |                 ^
   drivers/gpio/gpio-rockchip.c:768:9: error: implicit declaration of function 'platform_set_drvdata' [-Werror=implicit-function-declaration]
     768 |         platform_set_drvdata(pdev, bank);
         |         ^~~~~~~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c: At top level:
   drivers/gpio/gpio-rockchip.c:774:40: warning: 'struct platform_device' declared inside parameter list will not be visible outside of this definition or declaration
     774 | static int rockchip_gpio_remove(struct platform_device *pdev)
         |                                        ^~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c: In function 'rockchip_gpio_remove':
   drivers/gpio/gpio-rockchip.c:776:42: error: implicit declaration of function 'platform_get_drvdata' [-Werror=implicit-function-declaration]
     776 |         struct rockchip_pin_bank *bank = platform_get_drvdata(pdev);
         |                                          ^~~~~~~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c:776:42: warning: initialization of 'struct rockchip_pin_bank *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
   drivers/gpio/gpio-rockchip.c: At top level:
   drivers/gpio/gpio-rockchip.c:790:15: error: variable 'rockchip_gpio_driver' has initializer but incomplete type
     790 | static struct platform_driver rockchip_gpio_driver = {
         |               ^~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c:791:10: error: 'struct platform_driver' has no member named 'probe'
     791 |         .probe          = rockchip_gpio_probe,
         |          ^~~~~
   drivers/gpio/gpio-rockchip.c:791:27: warning: excess elements in struct initializer
     791 |         .probe          = rockchip_gpio_probe,
         |                           ^~~~~~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c:791:27: note: (near initialization for 'rockchip_gpio_driver')
   drivers/gpio/gpio-rockchip.c:792:10: error: 'struct platform_driver' has no member named 'remove'
     792 |         .remove         = rockchip_gpio_remove,
         |          ^~~~~~
   drivers/gpio/gpio-rockchip.c:792:27: warning: excess elements in struct initializer
     792 |         .remove         = rockchip_gpio_remove,
         |                           ^~~~~~~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c:792:27: note: (near initialization for 'rockchip_gpio_driver')
   drivers/gpio/gpio-rockchip.c:793:10: error: 'struct platform_driver' has no member named 'driver'
     793 |         .driver         = {
         |          ^~~~~~
   drivers/gpio/gpio-rockchip.c:793:27: error: extra brace group at end of initializer
     793 |         .driver         = {
         |                           ^
   drivers/gpio/gpio-rockchip.c:793:27: note: (near initialization for 'rockchip_gpio_driver')
   drivers/gpio/gpio-rockchip.c:793:27: warning: excess elements in struct initializer
   drivers/gpio/gpio-rockchip.c:793:27: note: (near initialization for 'rockchip_gpio_driver')
   drivers/gpio/gpio-rockchip.c: In function 'rockchip_gpio_init':
   drivers/gpio/gpio-rockchip.c:801:16: error: implicit declaration of function 'platform_driver_register' [-Werror=implicit-function-declaration]
     801 |         return platform_driver_register(&rockchip_gpio_driver);
         |                ^~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpio/gpio-rockchip.c: In function 'rockchip_gpio_exit':
   drivers/gpio/gpio-rockchip.c:807:9: error: implicit declaration of function 'platform_driver_unregister'; did you mean 'driver_unregister'? [-Werror=implicit-function-declaration]
     807 |         platform_driver_unregister(&rockchip_gpio_driver);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
         |         driver_unregister
   drivers/gpio/gpio-rockchip.c: At top level:
   drivers/gpio/gpio-rockchip.c:790:31: error: storage size of 'rockchip_gpio_driver' isn't known
     790 | static struct platform_driver rockchip_gpio_driver = {
         |                               ^~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for PCI_LOONGSON
   Depends on [n]: PCI [=y] && (MACH_LOONGSON64 [=y] || COMPILE_TEST [=y]) && (OF [=y] || ACPI [=y]) && PCI_QUIRKS [=n]
   Selected by [y]:
   - LOONGARCH [=y]


vim +611 drivers/gpio/gpio-rockchip.c

   577	
   578	static int rockchip_gpiolib_register(struct rockchip_pin_bank *bank)
   579	{
   580		struct gpio_chip *gc;
   581		int ret;
   582	
   583		bank->gpio_chip = rockchip_gpiolib_chip;
   584	
   585		gc = &bank->gpio_chip;
   586		gc->base = bank->pin_base;
   587		gc->ngpio = bank->nr_pins;
   588		gc->label = bank->name;
   589		gc->parent = bank->dev;
   590	
   591		ret = gpiochip_add_data(gc, bank);
   592		if (ret) {
   593			dev_err(bank->dev, "failed to add gpiochip %s, %d\n",
   594				gc->label, ret);
   595			return ret;
   596		}
   597	
   598		/*
   599		 * For DeviceTree-supported systems, the gpio core checks the
   600		 * pinctrl's device node for the "gpio-ranges" property.
   601		 * If it is present, it takes care of adding the pin ranges
   602		 * for the driver. In this case the driver can skip ahead.
   603		 *
   604		 * In order to remain compatible with older, existing DeviceTree
   605		 * files which don't set the "gpio-ranges" property or systems that
   606		 * utilize ACPI the driver has to call gpiochip_add_pin_range().
   607		 */
   608		if (!device_property_read_bool(bank->dev, "gpio-ranges")) {
   609			struct pinctrl_dev *pctldev = NULL;
   610	
 > 611			pctldev = pinctrl_get(bank->dev->parent);
   612			if (!pctldev)
   613				return -ENODEV;
   614	
   615			ret = gpiochip_add_pin_range(gc, dev_name(pctldev->dev), 0,
   616						     gc->base, gc->ngpio);
   617			if (ret) {
   618				dev_err(bank->dev, "Failed to add pin range\n");
   619				goto fail;
   620			}
   621		}
   622	
   623		ret = rockchip_interrupts_register(bank);
   624		if (ret) {
   625			dev_err(bank->dev, "failed to register interrupt, %d\n", ret);
   626			goto fail;
   627		}
   628	
   629		return 0;
   630	
   631	fail:
   632		gpiochip_remove(&bank->gpio_chip);
   633	
   634		return ret;
   635	}
   636	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp



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