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| author | Dan Williams <dan.j.williams@intel.com> | 2009-04-09 16:16:18 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-06-03 14:07:34 -0700 |
| commit | 88ba2aa586c874681c072101287e15d40de7e6e2 (patch) | |
| tree | 69a124fcd0a8a75ef9aae0cc4081bad83c770374 /crypto/async_tx/async_tx.c | |
| parent | 099f53cb50e45ef617a9f1d63ceec799e489418b (diff) | |
| download | linux-88ba2aa586c874681c072101287e15d40de7e6e2.tar.gz linux-88ba2aa586c874681c072101287e15d40de7e6e2.tar.bz2 linux-88ba2aa586c874681c072101287e15d40de7e6e2.zip | |
async_tx: kill ASYNC_TX_DEP_ACK flag
In support of inter-channel chaining async_tx utilizes an ack flag to
gate whether a dependent operation can be chained to another. While the
flag is not set the chain can be considered open for appending. Setting
the ack flag closes the chain and flags the descriptor for garbage
collection. The ASYNC_TX_DEP_ACK flag essentially means "close the
chain after adding this dependency". Since each operation can only have
one child the api now implicitly sets the ack flag at dependency
submission time. This removes an unnecessary management burden from
clients of the api.
[ Impact: clean up and enforce one dependency per operation ]
Reviewed-by: Andre Noll <maan@systemlinux.org>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'crypto/async_tx/async_tx.c')
| -rw-r--r-- | crypto/async_tx/async_tx.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c index 06eb6cc09fef..3766bc3d7d89 100644 --- a/crypto/async_tx/async_tx.c +++ b/crypto/async_tx/async_tx.c @@ -223,7 +223,7 @@ async_tx_submit(struct dma_chan *chan, struct dma_async_tx_descriptor *tx, if (flags & ASYNC_TX_ACK) async_tx_ack(tx); - if (depend_tx && (flags & ASYNC_TX_DEP_ACK)) + if (depend_tx) async_tx_ack(depend_tx); } EXPORT_SYMBOL_GPL(async_tx_submit); @@ -231,7 +231,7 @@ EXPORT_SYMBOL_GPL(async_tx_submit); /** * async_trigger_callback - schedules the callback function to be run after * any dependent operations have been completed. - * @flags: ASYNC_TX_ACK, ASYNC_TX_DEP_ACK + * @flags: ASYNC_TX_ACK * @depend_tx: 'callback' requires the completion of this transaction * @cb_fn: function to call after depend_tx completes * @cb_param: parameter to pass to the callback routine |