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| author | Paul Mackerras <paulus@samba.org> | 2007-10-03 15:33:17 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-10-03 15:33:17 +1000 |
| commit | 70f227d8846a8a9b1f36f71c42e11cc7c6e9408d (patch) | |
| tree | fb4dd5c8240bdaada819fb569c01a392b52847b9 /crypto | |
| parent | a0c7ce9c877ceef8428798ac91fb794f83609aed (diff) | |
| parent | f778089cb2445dfc6dfd30a7a567925fd8589f1e (diff) | |
| download | blackbird-op-linux-70f227d8846a8a9b1f36f71c42e11cc7c6e9408d.tar.gz blackbird-op-linux-70f227d8846a8a9b1f36f71c42e11cc7c6e9408d.zip | |
Merge branch 'linux-2.6' into for-2.6.24
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/async_tx/async_tx.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c index 035007145e78..bc18cbb8ea79 100644 --- a/crypto/async_tx/async_tx.c +++ b/crypto/async_tx/async_tx.c @@ -80,6 +80,7 @@ dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx) { enum dma_status status; struct dma_async_tx_descriptor *iter; + struct dma_async_tx_descriptor *parent; if (!tx) return DMA_SUCCESS; @@ -87,8 +88,15 @@ dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx) /* poll through the dependency chain, return when tx is complete */ do { iter = tx; - while (iter->cookie == -EBUSY) - iter = iter->parent; + + /* find the root of the unsubmitted dependency chain */ + while (iter->cookie == -EBUSY) { + parent = iter->parent; + if (parent && parent->cookie == -EBUSY) + iter = iter->parent; + else + break; + } status = dma_sync_wait(iter->chan, iter->cookie); } while (status == DMA_IN_PROGRESS || (iter != tx)); |
