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authorDan Williams <dan.j.williams@intel.com>2008-04-18 07:17:26 +0400
committerDan Williams <dan.j.williams@intel.com>2008-04-18 00:25:54 +0400
commit636bdeaa1243327501edfd2a597ed7443eb4239a (patch)
tree59b894f124e3664ea4a537d7c07c527abdb9c8da /crypto/async_tx/async_memcpy.c
parentc4fe15541d0ef5cc8cc1ce43057663851f8fc387 (diff)
downloadlinux-636bdeaa1243327501edfd2a597ed7443eb4239a.tar.xz
dmaengine: ack to flags: make use of the unused bits in the 'ack' field
'ack' is currently a simple integer that flags whether or not a client is done touching fields in the given descriptor. It is effectively just a single bit of information. Converting this to a flags parameter allows the other bits to be put to use to control completion actions, like dma-unmap, and capture results, like xor-zero-sum == 0. Changes are one of: 1/ convert all open-coded ->ack manipulations to use async_tx_ack and async_tx_test_ack. 2/ set the ack bit at prep time where possible 3/ make drivers store the flags at prep time 4/ add flags to the device_prep_dma_interrupt prototype 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_memcpy.c')
-rw-r--r--crypto/async_tx/async_memcpy.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/async_tx/async_memcpy.c b/crypto/async_tx/async_memcpy.c
index 84caa4efc0d4..a5eda80e8427 100644
--- a/crypto/async_tx/async_memcpy.c
+++ b/crypto/async_tx/async_memcpy.c
@@ -77,7 +77,7 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
/* if ack is already set then we cannot be sure
* we are referring to the correct operation
*/
- BUG_ON(depend_tx->ack);
+ 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__);