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

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[ Upstream commit 4ec1b01029 ]

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>
This commit is contained in:
Sowmini Varadhan
2014-08-01 09:50:40 -04:00
committed by Greg Kroah-Hartman
parent ff0adae5df
commit 87c64964c0
1 changed files with 1 additions and 1 deletions
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2
arch/sparc/kernel/ldc.c
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@@ -1336,7 +1336,7 @@ int ldc_connect(struct ldc_channel *lp)
if (!(lp->flags & LDC_FLAG_ALLOCED_QUEUES) ||
!(lp->flags & LDC_FLAG_REGISTERED_QUEUES) ||
lp->hs_state != LDC_HS_OPEN)
err = -EINVAL;
err = ((lp->hs_state > LDC_HS_OPEN) ? 0 : -EINVAL);
else
err = start_handshake(lp);