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authorDan Williams <dan.j.williams@intel.com>2009-09-08 17:53:04 -0700
committerDan Williams <dan.j.williams@intel.com>2009-09-08 17:53:04 -0700
commit0803172778901e24a75ab074798d98c2b7411559 (patch)
treea3e1d0cf4228d65dc1fac2ad56f3beb6b6f3474b /drivers/dma/dmaengine.c
parent1979b186b80449ac6574d97c254b694c8a99b703 (diff)
downloadlinux-0803172778901e24a75ab074798d98c2b7411559.tar.bz2
dmaengine: kill tx_list
The tx_list attribute of struct dma_async_tx_descriptor is common to most, but not all dma driver implementations. None of the upper level code (dmaengine/async_tx) uses it, so allow drivers to implement it locally if they need it. This saves sizeof(struct list_head) bytes for drivers that do not manage descriptors with a linked list (e.g.: ioatdma v2,3). Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/dmaengine.c')
-rw-r--r--drivers/dma/dmaengine.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 5a87384ea4ff..562d182eae66 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -933,7 +933,6 @@ void dma_async_tx_descriptor_init(struct dma_async_tx_descriptor *tx,
{
tx->chan = chan;
spin_lock_init(&tx->lock);
- INIT_LIST_HEAD(&tx->tx_list);
}
EXPORT_SYMBOL(dma_async_tx_descriptor_init);