[brgl:gpio/devel 2/2] arch/mips/alchemy/common/gpiolib.c:100:12: error: incompatible function pointer types initializing 'int (*)(struct gpio_chip *, unsigned int, int)' with an expression of type 'void (struct gpio_chip *, unsigned int, int)'

[brgl:gpio/devel 2/2] arch/mips/alchemy/common/gpiolib.c:100:12: error: incompatible function pointer types initializing 'int (*)(struct gpio_chip *, unsigned int, int)' with an expression of type 'void (struct gpio_chip *, unsigned int, int)'

[kernel test robot]

Hi Bartosz,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git gpio/devel
head:   2c924414c5d54d7ffc883039176b66efbb735b72
commit: 2c924414c5d54d7ffc883039176b66efbb735b72 [2/2] treewide: rename GPIO set callbacks back to their original names
config: mips-db1xxx_defconfig (https://download.01.org/0day-ci/archive/20250727/202507270738.rj7En3F7-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 853c343b45b3e83cc5eeef5a52fc8cc9d8a09252)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250727/202507270738.rj7En3F7-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/202507270738.rj7En3F7-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/mips/alchemy/common/gpiolib.c:100:12: error: incompatible function pointer types initializing 'int (*)(struct gpio_chip *, unsigned int, int)' with an expression of type 'void (struct gpio_chip *, unsigned int, int)' [-Wincompatible-function-pointer-types]
     100 |                 .set                    = gpio1_set,
         |                                           ^~~~~~~~~
   arch/mips/alchemy/common/gpiolib.c:110:12: error: incompatible function pointer types initializing 'int (*)(struct gpio_chip *, unsigned int, int)' with an expression of type 'void (struct gpio_chip *, unsigned int, int)' [-Wincompatible-function-pointer-types]
     110 |                 .set                    = gpio2_set,
         |                                           ^~~~~~~~~
   2 errors generated.


vim +100 arch/mips/alchemy/common/gpiolib.c

51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06   93  
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06   94  struct gpio_chip alchemy_gpio_chip[] = {
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06   95  	[0] = {
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06   96  		.label			= "alchemy-gpio1",
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06   97  		.direction_input	= gpio1_direction_input,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06   98  		.direction_output	= gpio1_direction_output,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06   99  		.get			= gpio1_get,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06 @100  		.set			= gpio1_set,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  101  		.to_irq			= gpio1_to_irq,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  102  		.base			= ALCHEMY_GPIO1_BASE,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  103  		.ngpio			= ALCHEMY_GPIO1_NUM,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  104  	},
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  105  	[1] = {
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  106  		.label			= "alchemy-gpio2",
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  107  		.direction_input	= gpio2_direction_input,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  108  		.direction_output	= gpio2_direction_output,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  109  		.get			= gpio2_get,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  110  		.set			= gpio2_set,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  111  		.to_irq			= gpio2_to_irq,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  112  		.base			= ALCHEMY_GPIO2_BASE,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  113  		.ngpio			= ALCHEMY_GPIO2_NUM,
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  114  	},
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  115  };
51e02b02e65018 arch/mips/alchemy/common/gpiolib-au1000.c Manuel Lauss 2009-06-06  116  

:::::: The code at line 100 was first introduced by commit
:::::: 51e02b02e650183ff1277bcbad6a01d6ea0e9edb MIPS: Alchemy: Rewrite GPIO support.

:::::: TO: Manuel Lauss <manuel.lauss@googlemail.com>
:::::: CC: Ralf Baechle <ralf@linux-mips.org>

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