diff --git a/include/linux/pci.h b/include/linux/pci.h
index 9587d4d..b73c246 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -232,6 +232,8 @@
 	u8		revision;	/* PCI revision, low byte of class word */
 	u8		hdr_type;	/* PCI header type (`multi' flag masked out) */
 	u8		pcie_cap;	/* PCI-E capability offset */
+	u8		msi_cap;	/* MSI capability offset */
+	u8		msix_cap;	/* MSI-X capability offset */
 	u8		pcie_mpss:3;	/* PCI-E Max Payload Size Supported */
 	u8		rom_base_reg;	/* which config register controls the ROM */
 	u8		pin;  		/* which interrupt pin this device uses */