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| author | Sowmini Varadhan | 2014-08-01 15:50:40 +0200 |
|---|---|---|
| committer | David S. Miller | 2014-08-05 05:18:17 +0200 |
| commit | 4ec1b01029b4facb651b8ef70bc20a4be4cebc63 (patch) | |
| tree | fe5487c8d357ee470b497eafdae64d0b56021681 /arch/sparc | |
| parent | sparc64: Guard against flushing openfirmware mappings. (diff) | |
| download | kernel-qcow2-linux-4ec1b01029b4facb651b8ef70bc20a4be4cebc63.tar.gz kernel-qcow2-linux-4ec1b01029b4facb651b8ef70bc20a4be4cebc63.tar.xz kernel-qcow2-linux-4ec1b01029b4facb651b8ef70bc20a4be4cebc63.zip | |
sparc64: ldc_connect() should not return EINVAL when handshake is in progress.
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>
Diffstat (limited to 'arch/sparc')
| -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 e01d75d40329..66dacd56bb10 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -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); |