Re: [PATCH V6 10/10] irqchip: Add Loongson PCH LPC controller support

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

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Hi Huacai,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tip/irq/core]
[also build test WARNING on linux/master linus/master v5.15-rc5 next-20211011]
[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]

url:    https://github.com/0day-ci/linux/commits/Huacai-Chen/irqchip-Add-LoongArch-related-irqchip-drivers/20211011-164738
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git b70e13885cf63b6f99cbd9a1dbb6beaa2622bf68
config: mips-loongson2k_defconfig (attached as .config)
compiler: mips64el-linux-gcc (GCC) 11.2.0
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/0day-ci/linux/commit/2bea942946e85ba99a5ff261f18347f2b36b8742
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Huacai-Chen/irqchip-Add-LoongArch-related-irqchip-drivers/20211011-164738
        git checkout 2bea942946e85ba99a5ff261f18347f2b36b8742
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash drivers/irqchip/

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

All warnings (new ones prefixed by >>):

>> drivers/irqchip/irq-loongson-pch-lpc.c:149:48: warning: 'struct acpi_madt_lpc_pic' declared inside parameter list will not be visible outside of this definition or declaration
     149 |                                         struct acpi_madt_lpc_pic *acpi_pchlpc)
         |                                                ^~~~~~~~~~~~~~~~~
>> drivers/irqchip/irq-loongson-pch-lpc.c:148:20: warning: no previous prototype for 'pch_lpc_acpi_init' [-Wmissing-prototypes]
     148 | struct irq_domain *pch_lpc_acpi_init(struct irq_domain *parent,
         |                    ^~~~~~~~~~~~~~~~~
   In file included from arch/mips/include/asm/mmiowb.h:5,
                    from include/linux/spinlock.h:65,
                    from include/linux/wait.h:9,
                    from include/linux/pid.h:6,
                    from include/linux/sched.h:14,
                    from include/linux/hardirq.h:9,
                    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:187:38: error: invalid use of undefined type 'struct acpi_madt_lpc_pic'
     187 |         fwspec.param[0] = acpi_pchlpc->cascade;
         |                                      ^~


vim +149 drivers/irqchip/irq-loongson-pch-lpc.c

   147	
 > 148	struct irq_domain *pch_lpc_acpi_init(struct irq_domain *parent,
 > 149						struct acpi_madt_lpc_pic *acpi_pchlpc)

---
0-DAY CI Kernel Test Service, Intel Corporation
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