linux-kernel - arch/loongarch/pci/acpi.c:103:29: error: 'loongson_pci_ecam

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Date:   Sat, 20 Aug 2022 00:44:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Huacai Chen <chenhuacai@...ngson.cn>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        WANG Xuerui <git@...0n.name>,
        Jianmin Lv <lvjianmin@...ngson.cn>
Subject: arch/loongarch/pci/acpi.c:103:29: error: 'loongson_pci_ecam_ops'
 undeclared

arch/loongarch/Makefile
arch/loongarch/include/asm/dma.h
arch/loongarch/include/asm/irq.h
arch/loongarch/include/asm/page.h
arch/loongarch/include/asm/pci.h
arch/loongarch/pci/acpi.c
arch/loongarch/pci/pci.c
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4c2d0b039c5cc0112206a5b22431b577cb1c57ad
commit: 57fc7323a8e7c2e7c1d5795ab63cb3ffea3cfdfb LoongArch: Add PCI controller support
date:   8 days ago
config: loongarch-randconfig-r021-20220819 (https://download.01.org/0day-ci/archive/20220820/202208200012.mePOXcVS-lkp@intel.com/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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=57fc7323a8e7c2e7c1d5795ab63cb3ffea3cfdfb
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 57fc7323a8e7c2e7c1d5795ab63cb3ffea3cfdfb
        # 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

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

All errors (new ones prefixed by >>):

   arch/loongarch/pci/acpi.c: In function 'pci_acpi_setup_ecam_mapping':
>> arch/loongarch/pci/acpi.c:103:29: error: 'loongson_pci_ecam_ops' undeclared (first use in this function)
     103 |                 ecam_ops = &loongson_pci_ecam_ops;
         |                             ^~~~~~~~~~~~~~~~~~~~~
   arch/loongarch/pci/acpi.c:103:29: note: each undeclared identifier is reported only once for each function it appears in

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 +/loongson_pci_ecam_ops +103 arch/loongarch/pci/acpi.c

    84	
    85	/*
    86	 * Lookup the bus range for the domain in MCFG, and set up config space
    87	 * mapping.
    88	 */
    89	static struct pci_config_window *
    90	pci_acpi_setup_ecam_mapping(struct acpi_pci_root *root)
    91	{
    92		int ret, bus_shift;
    93		u16 seg = root->segment;
    94		struct device *dev = &root->device->dev;
    95		struct resource cfgres;
    96		struct resource *bus_res = &root->secondary;
    97		struct pci_config_window *cfg;
    98		const struct pci_ecam_ops *ecam_ops;
    99	
   100		ret = pci_mcfg_lookup(root, &cfgres, &ecam_ops);
   101		if (ret < 0) {
   102			dev_err(dev, "%04x:%pR ECAM region not found, use default value\n", seg, bus_res);
 > 103			ecam_ops = &loongson_pci_ecam_ops;
   104			root->mcfg_addr = mcfg_addr_init(0);
   105		}
   106	
   107		bus_shift = ecam_ops->bus_shift ? : 20;
   108	
   109		cfgres.start = root->mcfg_addr + (bus_res->start << bus_shift);
   110		cfgres.end = cfgres.start + (resource_size(bus_res) << bus_shift) - 1;
   111		cfgres.flags = IORESOURCE_MEM;
   112	
   113		cfg = pci_ecam_create(dev, &cfgres, bus_res, ecam_ops);
   114		if (IS_ERR(cfg)) {
   115			dev_err(dev, "%04x:%pR error %ld mapping ECAM\n", seg, bus_res, PTR_ERR(cfg));
   116			return NULL;
   117		}
   118	
   119		return cfg;
   120	}
   121	

-- 
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