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path: root/drivers/acpi/acpica/utmisc.c
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Diffstat (limited to 'drivers/acpi/acpica/utmisc.c')
-rw-r--r--drivers/acpi/acpica/utmisc.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c
index fbe782348b0b..9cd65334ca75 100644
--- a/drivers/acpi/acpica/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -120,6 +120,34 @@ const char *acpi_ut_validate_exception(acpi_status status)
/*******************************************************************************
*
+ * FUNCTION: acpi_ut_is_pci_root_bridge
+ *
+ * PARAMETERS: Id - The HID/CID in string format
+ *
+ * RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
+ *
+ * DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_is_pci_root_bridge(char *id)
+{
+
+ /*
+ * Check if this is a PCI root bridge.
+ * ACPI 3.0+: check for a PCI Express root also.
+ */
+ if (!(ACPI_STRCMP(id,
+ PCI_ROOT_HID_STRING)) ||
+ !(ACPI_STRCMP(id, PCI_EXPRESS_ROOT_HID_STRING))) {
+ return (TRUE);
+ }
+
+ return (FALSE);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ut_is_aml_table
*
* PARAMETERS: Table - An ACPI table