diff options
| -rw-r--r-- | drivers/dahdi/wctc4xxp/base.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/dahdi/wctc4xxp/base.c b/drivers/dahdi/wctc4xxp/base.c index aea02d6..3942251 100644 --- a/drivers/dahdi/wctc4xxp/base.c +++ b/drivers/dahdi/wctc4xxp/base.c @@ -2049,8 +2049,14 @@ wctc4xxp_handle_receive_ring(struct wcdte *wc) /* If we can't grab this lock, another thread must already be checking * the receive ring...so we should just finish up, and we'll try again * later. */ +#if defined(spin_trylock_irqsave) if (!spin_trylock_irqsave(&wc->rx_lock, flags)) return 0; +#else + if (spin_is_locked(&wc->rx_lock)) + return 0; + spin_lock_irqsave(&wc->rx_lock, flags); +#endif while ((cmd = wctc4xxp_retrieve(wc->rxd))) { ++count; |