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| author | Dave Jiang <dave.jiang@intel.com> | 2016-07-20 13:10:37 -0700 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-08-08 08:11:38 +0530 |
| commit | dff232dab98154903970c1e6b36f47c9defbd0a2 (patch) | |
| tree | 5031ff9ff1de0bbf83479925546290f0d9a161de /drivers/dma/at_hdmac.c | |
| parent | f083f557186d77de5f14bf90aec1bfe2503cf513 (diff) | |
| download | lwn-dff232dab98154903970c1e6b36f47c9defbd0a2.tar.gz lwn-dff232dab98154903970c1e6b36f47c9defbd0a2.zip | |
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.c | 11 |
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 ---------------------------------------------------*/ |