diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index b62d4af6c667..45e921401b06 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -361,7 +361,8 @@ struct ssb_device_id {
 	__u16	vendor;
 	__u16	coreid;
 	__u8	revision;
-};
+	__u8	__pad;
+} __attribute__((packed, aligned(2)));
 #define SSB_DEVICE(_vendor, _coreid, _revision)  \
 	{ .vendor = _vendor, .coreid = _coreid, .revision = _revision, }
 #define SSB_DEVTABLE_END  \
@@ -377,7 +378,7 @@ struct bcma_device_id {
 	__u16	id;
 	__u8	rev;
 	__u8	class;
-};
+} __attribute__((packed,aligned(2)));
 #define BCMA_CORE(_manuf, _id, _rev, _class)  \
 	{ .manuf = _manuf, .id = _id, .rev = _rev, .class = _class, }
 #define BCMA_CORETABLE_END  \