[openeuler:OLK-6.6 9757/15331] drivers/irqchip/irq-loongson-eiointc.c:378:58: error: 'NODES_PER_FLATMODE_NODE' undeclared

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

Hi Hongchen,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   9d0af12b79bee784902822ddeec2e1a8cfc18524
commit: 30affb08c584efdc07b3c68015b5902ea02ec86a [9757/15331] irqchip/loongson-eiointc: fix gsi register error
config: loongarch-randconfig-001-20241027 (https://download.01.org/0day-ci/archive/20241027/202410270410.DRsfwEJr-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241027/202410270410.DRsfwEJr-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/202410270410.DRsfwEJr-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/irqchip/irq-loongson-eiointc.c:357:12: warning: no previous prototype for 'pch_pic_parse_madt' [-Wmissing-prototypes]
     357 | int __init pch_pic_parse_madt(union acpi_subtable_headers *header,
         |            ^~~~~~~~~~~~~~~~~~
   drivers/irqchip/irq-loongson-eiointc.c:370:12: warning: no previous prototype for 'pch_msi_parse_madt' [-Wmissing-prototypes]
     370 | int __init pch_msi_parse_madt(union acpi_subtable_headers *header,
         |            ^~~~~~~~~~~~~~~~~~
   drivers/irqchip/irq-loongson-eiointc.c: In function 'pch_msi_parse_madt':
>> drivers/irqchip/irq-loongson-eiointc.c:378:58: error: 'NODES_PER_FLATMODE_NODE' undeclared (first use in this function)
     378 |                 node = eiointc_priv[nr_pics - 1]->node / NODES_PER_FLATMODE_NODE;
         |                                                          ^~~~~~~~~~~~~~~~~~~~~~~
   drivers/irqchip/irq-loongson-eiointc.c:378:58: note: each undeclared identifier is reported only once for each function it appears in
   drivers/irqchip/irq-loongson-eiointc.c: In function 'eiointc_acpi_init':
   drivers/irqchip/irq-loongson-eiointc.c:481:45: error: 'NODES_PER_FLATMODE_NODE' undeclared (first use in this function)
     481 |                 node = acpi_eiointc->node / NODES_PER_FLATMODE_NODE;
         |                                             ^~~~~~~~~~~~~~~~~~~~~~~


vim +/NODES_PER_FLATMODE_NODE +378 drivers/irqchip/irq-loongson-eiointc.c

   369	
   370	int __init pch_msi_parse_madt(union acpi_subtable_headers *header,
   371						const unsigned long end)
   372	{
   373		struct irq_domain *parent;
   374		struct acpi_madt_msi_pic *pchmsi_entry = (struct acpi_madt_msi_pic *)header;
   375		int node;
   376	
   377		if (cpu_has_flatmode)
 > 378			node = eiointc_priv[nr_pics - 1]->node / NODES_PER_FLATMODE_NODE;
   379		else
   380			node = eiointc_priv[nr_pics - 1]->node;
   381	
   382		parent = acpi_get_vec_parent(node, msi_group);
   383	
   384		if (parent)
   385			return pch_msi_acpi_init(parent, pchmsi_entry);
   386	
   387		return 0;
   388	}
   389	

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