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-rw-r--r--include/linux/pci_ids.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 15b49e655ce3..b362d90eb9b0 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -75,6 +75,9 @@
#define PCI_CLASS_COMMUNICATION_MODEM 0x0703
#define PCI_CLASS_COMMUNICATION_OTHER 0x0780
+/* Interface for SERIAL/MODEM */
+#define PCI_SERIAL_16550_COMPATIBLE 0x02
+
#define PCI_BASE_CLASS_SYSTEM 0x08
#define PCI_CLASS_SYSTEM_PIC 0x0800
#define PCI_CLASS_SYSTEM_PIC_IOAPIC 0x080010