linux-kernel - [PATCH] LoongArch: Select PCI

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Date:   Sat, 20 Aug 2022 10:57:55 +0800
From:   Huacai Chen <chenhuacai@...ngson.cn>
To:     Arnd Bergmann <arnd@...db.de>, Huacai Chen <chenhuacai@...nel.org>
Cc:     loongarch@...ts.linux.dev, linux-arch@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>,
        Guo Ren <guoren@...nel.org>, Xuerui Wang <kernel@...0n.name>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        linux-kernel@...r.kernel.org, Huacai Chen <chenhuacai@...ngson.cn>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH] LoongArch: Select PCI_QUIRKS to avoid build error

PCI_LOONGSON is a mandatory for LoongArch and it is selected in Kconfig
unconditionally, but its dependency PCI_QUIRKS is missing and may cause
a build error when "make randconfig":

   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]

Fix it by selecting PCI_QUIRKS unconditionally, too.

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 arch/loongarch/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 4abc9a28aba4..26aeb1408e56 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -111,6 +111,7 @@ config LOONGARCH
 	select PCI_ECAM if ACPI
 	select PCI_LOONGSON
 	select PCI_MSI_ARCH_FALLBACKS
+	select PCI_QUIRKS
 	select PERF_USE_VMALLOC
 	select RTC_LIB
 	select SMP
-- 
2.31.1