diff options
| -rw-r--r-- | drivers/dahdi/dahdi-base.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/dahdi/dahdi-base.c b/drivers/dahdi/dahdi-base.c index 60a070e..a292619 100644 --- a/drivers/dahdi/dahdi-base.c +++ b/drivers/dahdi/dahdi-base.c @@ -2756,6 +2756,7 @@ static int dahdi_specchan_open(struct file *file) res = -EBUSY; else if (!test_and_set_bit(DAHDI_FLAGBIT_OPEN, &chan->flags)) { unsigned long flags; + const struct dahdi_span_ops *ops; res = initialize_channel(chan); if (res) { /* Reallocbufs must have failed */ @@ -2763,13 +2764,17 @@ static int dahdi_specchan_open(struct file *file) return res; } spin_lock_irqsave(&chan->lock, flags); + ops = chan->span->ops; if (is_pseudo_chan(chan)) chan->flags |= DAHDI_FLAG_AUDIO; if (chan->span) { - if (!try_module_get(chan->span->ops->owner)) + if (!try_module_get(ops->owner)) { res = -ENXIO; - else if (chan->span->ops->open) - res = chan->span->ops->open(chan); + } else if (ops->open) { + res = ops->open(chan); + if (res) + module_put(ops->owner); + } } if (!res) { chan->file = file; |