IB: Make sure struct ib_user_mad.data is aligned

Make the untyped data region in ib_user_mad have type u64 so that it
gets aligned properly.  This avoids alignment faults in ib_umad when
casting the data field to an rmpp_mad and accessing the 64-bit tid
field on architectures like ia64.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/include/rdma/ib_user_mad.h b/include/rdma/ib_user_mad.h
index 44537aa..d66b15e 100644 (file)
--- a/include/rdma/ib_user_mad.h
+++ b/include/rdma/ib_user_mad.h
@@ -98,7 +98,7 @@ struct ib_user_mad_hdr {
  */
 struct ib_user_mad {
        struct ib_user_mad_hdr hdr;
-       __u8    data[0];
+       __u64   data[0];
 };
 
 /**