tree 7a16e4892ef8582ea24a03aed95608c657aa985b
parent 09788d46b756a71313378b56d1a927a5ee64f7ce
author Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com> 1506672174 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1507801883 +0200

tipc: use only positive error codes in messages


[ Upstream commit aad06212d36cf34859428a0a279e5c14ee5c9e26 ]

In commit e3a77561e7d32 ("tipc: split up function tipc_msg_eval()"),
we have updated the function tipc_msg_lookup_dest() to set the error
codes to negative values at destination lookup failures. Thus when
the function sets the error code to -TIPC_ERR_NO_NAME, its inserted
into the 4 bit error field of the message header as 0xf instead of
TIPC_ERR_NO_NAME (1). The value 0xf is an unknown error code.

In this commit, we set only positive error code.

Fixes: e3a77561e7d32 ("tipc: split up function tipc_msg_eval()")
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>