diff options
| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2014-08-01 09:50:40 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-08-14 08:42:37 +0800 |
| commit | 29fa649b993693ce21d10b841e93c07d1d8f2c7e (patch) | |
| tree | 52cc0c78d70606276e3efbc710af0b1ad70fcbed | |
| parent | a46e9456f1516e8238d43dcff766595452c0ed48 (diff) | |
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>
| -rw-r--r-- | arch/sparc/kernel/ldc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index 435e406fdec3..1beaf60a5f78 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -1339,7 +1339,7 @@ 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); |