diff options
| -rw-r--r-- | src/northbridge/intel/gm45/acpi.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/northbridge/intel/gm45/acpi.c b/src/northbridge/intel/gm45/acpi.c index 69ebdd7b75..ef152db213 100644 --- a/src/northbridge/intel/gm45/acpi.c +++ b/src/northbridge/intel/gm45/acpi.c @@ -74,6 +74,9 @@ static unsigned long acpi_fill_dmar(unsigned long current) dev = pcidev_on_root(3, 0); int me_active = dev && dev->enabled; + dev = pcidev_on_root(2, 0); + int igd_active = dev && dev->enabled; + int stepping = pci_read_config8(pcidev_on_root(0, 0), PCI_CLASS_REVISION); @@ -82,7 +85,7 @@ static unsigned long acpi_fill_dmar(unsigned long current) current += acpi_create_dmar_ds_pci(current, 0, 0x1b, 0); acpi_dmar_drhd_fixup(tmp, current); - if (stepping != STEPPING_B2) { + if (stepping != STEPPING_B2 && igd_active) { tmp = current; current += acpi_create_dmar_drhd(current, 0, 0, IOMMU_BASE2); current += acpi_create_dmar_ds_pci(current, 0, 0x2, 0); |