diff options
| -rw-r--r-- | crypto/async_tx/async_tx.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c index e8362c1..dcbf1be 100644 --- a/crypto/async_tx/async_tx.c +++ b/crypto/async_tx/async_tx.c @@ -115,34 +115,32 @@ EXPORT_SYMBOL_GPL(dma_wait_for_async_tx); * (start) dependent operations on their target channel * @tx: transaction with dependencies */ -void -async_tx_run_dependencies(struct dma_async_tx_descriptor *tx) +void async_tx_run_dependencies(struct dma_async_tx_descriptor *tx) { - struct dma_async_tx_descriptor *next = tx->next; + struct dma_async_tx_descriptor *dep = tx->next; + struct dma_async_tx_descriptor *dep_next; struct dma_chan *chan; - if (!next) + if (!dep) return; - tx->next = NULL; - chan = next->chan; + chan = dep->chan; /* keep submitting up until a channel switch is detected * in that case we will be called again as a result of * processing the interrupt from async_tx_channel_switch */ - while (next && next->chan == chan) { - struct dma_async_tx_descriptor *_next; - - spin_lock_bh(&next->lock); - next->parent = NULL; - _next = next->next; - if (_next && _next->chan == chan) - next->next = NULL; - spin_unlock_bh(&next->lock); - - next->tx_submit(next); - next = _next; + for (; dep; dep = dep_next) { + spin_lock_bh(&dep->lock); + dep->parent = NULL; + dep_next = dep->next; + if (dep_next && dep_next->chan == chan) + dep->next = NULL; /* ->next will be submitted */ + else + dep_next = NULL; /* submit current dep and terminate */ + spin_unlock_bh(&dep->lock); + + dep->tx_submit(dep); } chan->device->device_issue_pending(chan); |