linux-kernel - [PATCH] LoongArch: Add new PCI ID for pci_fixup

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Message-ID: <20251125082621.488633-1-chenhuacai@loongson.cn>
Date: Tue, 25 Nov 2025 16:26:21 +0800
From: Huacai Chen <chenhuacai@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev,
	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>,
	stable@...r.kernel.org,
	Tianrui Zhao <zhaotianrui@...ngson.cn>
Subject: [PATCH] LoongArch: Add new PCI ID for pci_fixup_vgadev()

Loongson-2K3000 has a new PCI ID (0x7a46) for its display controller,
Add it for pci_fixup_vgadev() since we prefer a discrete graphics card
as default boot device if present.

Cc: stable@...r.kernel.org
Signed-off-by: Tianrui Zhao <zhaotianrui@...ngson.cn>
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
 arch/loongarch/pci/pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/loongarch/pci/pci.c b/arch/loongarch/pci/pci.c
index d9fc5d520b37..d923295ab8c6 100644
--- a/arch/loongarch/pci/pci.c
+++ b/arch/loongarch/pci/pci.c
@@ -14,6 +14,7 @@
 #define PCI_DEVICE_ID_LOONGSON_HOST     0x7a00
 #define PCI_DEVICE_ID_LOONGSON_DC1      0x7a06
 #define PCI_DEVICE_ID_LOONGSON_DC2      0x7a36
+#define PCI_DEVICE_ID_LOONGSON_DC3      0x7a46
 
 int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
 						int reg, int len, u32 *val)
@@ -97,3 +98,4 @@ static void pci_fixup_vgadev(struct pci_dev *pdev)
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LOONGSON, PCI_DEVICE_ID_LOONGSON_DC1, pci_fixup_vgadev);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LOONGSON, PCI_DEVICE_ID_LOONGSON_DC2, pci_fixup_vgadev);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LOONGSON, PCI_DEVICE_ID_LOONGSON_DC3, pci_fixup_vgadev);
-- 
2.47.3