From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Date: Fri, 1 Aug 2014 13:50:40 +0000 (-0400)
Subject: sparc64: ldc_connect() should not return EINVAL when handshake is in progress.
X-Git-Tag: v3.2.64~118
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=796b7ab3131e72580060fb0ba22cf01e25e03971;p=pandora-kernel.git

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: Ben Hutchings <ben@decadent.org.uk>
---

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