drivers/irqchip/irq-loongson-pch-lpc.c:151:48: warning: 'struct acpi_madt_lpc_pic' declared inside parameter list will not be visible outside of this definition or declaration

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6614a3c3164a5df2b54abb0b3559f51041cf705b
commit: ee73f14ee9eb7e1a04051b303b56130c4dd6e048 irqchip: Add Loongson PCH LPC controller support
date:   2 weeks ago
config: mips-randconfig-r014-20220806 (https://download.01.org/0day-ci/archive/20220807/202208070241.PSOaN69Y-lkp@intel.com/config)
compiler: mips64el-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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee73f14ee9eb7e1a04051b303b56130c4dd6e048
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ee73f14ee9eb7e1a04051b303b56130c4dd6e048
        # 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=mips SHELL=/bin/bash drivers/irqchip/

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

All warnings (new ones prefixed by >>):

>> drivers/irqchip/irq-loongson-pch-lpc.c:151:48: warning: 'struct acpi_madt_lpc_pic' declared inside parameter list will not be visible outside of this definition or declaration
     151 |                                         struct acpi_madt_lpc_pic *acpi_pchlpc)
         |                                                ^~~~~~~~~~~~~~~~~
>> drivers/irqchip/irq-loongson-pch-lpc.c:150:12: warning: no previous prototype for 'pch_lpc_acpi_init' [-Wmissing-prototypes]
     150 | int __init pch_lpc_acpi_init(struct irq_domain *parent,
         |            ^~~~~~~~~~~~~~~~~
   In file included from include/linux/io.h:13,
                    from arch/mips/include/asm/mips-cps.h:11,
                    from arch/mips/include/asm/smp-ops.h:16,
                    from arch/mips/include/asm/smp.h:21,
                    from include/linux/smp.h:113,
                    from include/linux/percpu.h:7,
                    from include/linux/context_tracking_state.h:5,
                    from include/linux/hardirq.h:5,
                    from include/linux/interrupt.h:11,
                    from drivers/irqchip/irq-loongson-pch-lpc.c:10:
   drivers/irqchip/irq-loongson-pch-lpc.c: In function 'pch_lpc_acpi_init':
   drivers/irqchip/irq-loongson-pch-lpc.c:164:41: error: invalid use of undefined type 'struct acpi_madt_lpc_pic'
     164 |         priv->base = ioremap(acpi_pchlpc->address, acpi_pchlpc->size);
         |                                         ^~
   arch/mips/include/asm/io.h:180:23: note: in definition of macro 'ioremap'
     180 |         ioremap_prot((offset), (size), _CACHE_UNCACHED)
         |                       ^~~~~~
   drivers/irqchip/irq-loongson-pch-lpc.c:164:63: error: invalid use of undefined type 'struct acpi_madt_lpc_pic'
     164 |         priv->base = ioremap(acpi_pchlpc->address, acpi_pchlpc->size);
         |                                                               ^~
   arch/mips/include/asm/io.h:180:33: note: in definition of macro 'ioremap'
     180 |         ioremap_prot((offset), (size), _CACHE_UNCACHED)
         |                                 ^~~~
   drivers/irqchip/irq-loongson-pch-lpc.c:188:38: error: invalid use of undefined type 'struct acpi_madt_lpc_pic'
     188 |         fwspec.param[0] = acpi_pchlpc->cascade + GSI_MIN_PCH_IRQ;
         |                                      ^~
   drivers/irqchip/irq-loongson-pch-lpc.c:188:50: error: 'GSI_MIN_PCH_IRQ' undeclared (first use in this function)
     188 |         fwspec.param[0] = acpi_pchlpc->cascade + GSI_MIN_PCH_IRQ;
         |                                                  ^~~~~~~~~~~~~~~
   drivers/irqchip/irq-loongson-pch-lpc.c:188:50: note: each undeclared identifier is reported only once for each function it appears in


vim +151 drivers/irqchip/irq-loongson-pch-lpc.c

   149	
 > 150	int __init pch_lpc_acpi_init(struct irq_domain *parent,
 > 151						struct acpi_madt_lpc_pic *acpi_pchlpc)

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