linux-kernel - [PATCH] x86/amd_nb, char/amd64-agp: Use amd_nb

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Date:   Mon, 16 Mar 2020 16:07:25 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Michal Kubecek <mkubecek@...e.cz>,
        Yazen Ghannam <yazen.ghannam@....com>
Subject: [PATCH] x86/amd_nb, char/amd64-agp: Use amd_nb_num() accessor

From: Borislav Petkov <bp@...e.de>

... to find whether there are northbridges present on the system.
This converts the last forgotten user and therefore, unexport
amd_nb_misc_ids[] too.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Michal Kubecek <mkubecek@...e.cz>
Cc: Yazen Ghannam <yazen.ghannam@....com>
---
 arch/x86/include/asm/amd_nb.h | 1 -
 arch/x86/kernel/amd_nb.c      | 4 +---
 drivers/char/agp/amd64-agp.c  | 2 +-
 3 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/amd_nb.h b/arch/x86/include/asm/amd_nb.h
index 1ae4e5791afa..c7df20e78b09 100644
--- a/arch/x86/include/asm/amd_nb.h
+++ b/arch/x86/include/asm/amd_nb.h
@@ -12,7 +12,6 @@ struct amd_nb_bus_dev_range {
 	u8 dev_limit;
 };
 
-extern const struct pci_device_id amd_nb_misc_ids[];
 extern const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[];
 
 extern bool early_is_amd_nb(u32 value);
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index 69aed0ebbdfc..b6b3297851f3 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -36,10 +36,9 @@ static const struct pci_device_id amd_root_ids[] = {
 	{}
 };
 
-
 #define PCI_DEVICE_ID_AMD_CNB17H_F4     0x1704
 
-const struct pci_device_id amd_nb_misc_ids[] = {
+static const struct pci_device_id amd_nb_misc_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_10H_NB_MISC) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F3) },
@@ -56,7 +55,6 @@ const struct pci_device_id amd_nb_misc_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_DF_F3) },
 	{}
 };
-EXPORT_SYMBOL_GPL(amd_nb_misc_ids);
 
 static const struct pci_device_id amd_nb_link_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) },
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 594aee281977..b40edae32817 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -775,7 +775,7 @@ int __init agp_amd64_init(void)
 		}
 
 		/* First check that we have at least one AMD64 NB */
-		if (!pci_dev_present(amd_nb_misc_ids)) {
+		if (!amd_nb_num()) {
 			pci_unregister_driver(&agp_amd64_pci_driver);
 			return -ENODEV;
 		}
-- 
2.21.0