diff options
| -rw-r--r-- | drivers/pci/pci-acpi.c | 4 | ||||
| -rw-r--r-- | include/acpi/actbl.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index a064f36a080..b5ac810404c 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -317,6 +317,10 @@ static int __init acpi_pci_init(void) { int ret; + if (acpi_gbl_FADT.boot_flags & BAF_MSI_NOT_SUPPORTED) { + printk(KERN_INFO"ACPI FADT declares the system doesn't support MSI, so disable it\n"); + pci_no_msi(); + } ret = register_acpi_bus_type(&acpi_pci_bus); if (ret) return 0; diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index 09469e7db6a..955adfb8d64 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -276,6 +276,7 @@ enum acpi_prefered_pm_profiles { #define BAF_LEGACY_DEVICES 0x0001 #define BAF_8042_KEYBOARD_CONTROLLER 0x0002 +#define BAF_MSI_NOT_SUPPORTED 0x0008 #define FADT2_REVISION_ID 3 #define FADT2_MINUS_REVISION_ID 2 |