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async_tx: export async_tx_quiesce

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Replace open coded "wait and acknowledge" instances with async_tx_quiesce.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2008-07-17 17:59:55 -07:00
parent 669ab0b210
commit d2c52b7983
5 changed files with 26 additions and 62 deletions
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29
crypto/async_tx/async_tx.c
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@@ -607,15 +607,7 @@ async_trigger_callback(enum async_tx_flags flags,
pr_debug("%s: (sync)\n", __func__);
/* wait for any prerequisite operations */
if (depend_tx) {
/* if ack is already set then we cannot be sure
* we are referring to the correct operation
*/
BUG_ON(async_tx_test_ack(depend_tx));
if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR)
panic("%s: DMA_ERROR waiting for depend_tx\n",
__func__);
}
async_tx_quiesce(&depend_tx);
async_tx_sync_epilog(flags, depend_tx, cb_fn, cb_param);
}
@@ -624,6 +616,25 @@ async_trigger_callback(enum async_tx_flags flags,
}
EXPORT_SYMBOL_GPL(async_trigger_callback);
/**
* async_tx_quiesce - ensure tx is complete and freeable upon return
* @tx - transaction to quiesce
*/
void async_tx_quiesce(struct dma_async_tx_descriptor **tx)
{
if (*tx) {
/* if ack is already set then we cannot be sure
* we are referring to the correct operation
*/
BUG_ON(async_tx_test_ack(*tx));
if (dma_wait_for_async_tx(*tx) == DMA_ERROR)
panic("DMA_ERROR waiting for transaction\n");
async_tx_ack(*tx);
*tx = NULL;
}
}
EXPORT_SYMBOL_GPL(async_tx_quiesce);
module_init(async_tx_init);
module_exit(async_tx_exit);