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authorDave Jiang <dave.jiang@intel.com>2016-07-20 13:10:37 -0700
committerVinod Koul <vinod.koul@intel.com>2016-08-08 08:11:38 +0530
commitdff232dab98154903970c1e6b36f47c9defbd0a2 (patch)
tree5031ff9ff1de0bbf83479925546290f0d9a161de /drivers/dma/at_hdmac.c
parentf083f557186d77de5f14bf90aec1bfe2503cf513 (diff)
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dmaengine: at_hdmac: convert callback to helper function
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/at_hdmac.c')
-rw-r--r--drivers/dma/at_hdmac.c11
1 files changed, 2 insertions, 9 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 53d22eb73b56..a4c8f80db29d 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -473,15 +473,11 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc)
/* for cyclic transfers,
* no need to replay callback function while stopping */
if (!atc_chan_is_cyclic(atchan)) {
- dma_async_tx_callback callback = txd->callback;
- void *param = txd->callback_param;
-
/*
* The API requires that no submissions are done from a
* callback, so we don't need to drop the lock here
*/
- if (callback)
- callback(param);
+ dmaengine_desc_get_callback_invoke(txd, NULL);
}
dma_run_dependencies(txd);
@@ -598,15 +594,12 @@ static void atc_handle_cyclic(struct at_dma_chan *atchan)
{
struct at_desc *first = atc_first_active(atchan);
struct dma_async_tx_descriptor *txd = &first->txd;
- dma_async_tx_callback callback = txd->callback;
- void *param = txd->callback_param;
dev_vdbg(chan2dev(&atchan->chan_common),
"new cyclic period llp 0x%08x\n",
channel_readl(atchan, DSCR));
- if (callback)
- callback(param);
+ dmaengine_desc_get_callback_invoke(txd, NULL);
}
/*-- IRQ & Tasklet ---------------------------------------------------*/