tree b646a237b1a658948216cee215a018d29c29c174
parent 13bef7cc50933009b8d0311b5fc0b79ffb636113
author Sowmini Varadhan <sowmini.varadhan@oracle.com> 1406901040 -0400
committer chrmhoffmann <chrmhoffmann@gmail.com> 1586074837 +0200

sparc64: ldc_connect() should not return EINVAL when handshake is in progress.

[ Upstream commit 4ec1b01029b4facb651b8ef70bc20a4be4cebc63 ]

The LDC handshake could have been asynchronously triggered
after ldc_bind() enables the ldc_rx() receive interrupt-handler
(and thus intercepts incoming control packets)
and before vio_port_up() calls ldc_connect(). If that is the case,
ldc_connect() should return 0 and let the state-machine
progress.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Karl Volz <karl.volz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>