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-rw-r--r--arch/x86/kernel/vsmp_64.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
index a00961d42e7..eb25584c54c 100644
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -84,8 +84,10 @@ int is_vsmp_box(void)
return vsmp;
/* Check if we are running on a ScaleMP vSMP box */
- if (read_pci_config(0, 0x1f, 0, PCI_VENDOR_ID) ==
- (PCI_VENDOR_ID_SCALEMP || (PCI_DEVICE_ID_SCALEMP_VSMP_CTL << 16)))
+ if ((read_pci_config_16(0, 0x1f, 0, PCI_VENDOR_ID) ==
+ PCI_VENDOR_ID_SCALEMP) &&
+ (read_pci_config_16(0, 0x1f, 0, PCI_DEVICE_ID) ==
+ PCI_DEVICE_ID_SCALEMP_VSMP_CTL))
vsmp = 1;
return vsmp;