dmaengine: sh_rcar-dmac: 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>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 0dd9538..d1defa4 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -1389,21 +1389,18 @@
{
struct rcar_dmac_chan *chan = dev;
struct rcar_dmac_desc *desc;
+ struct dmaengine_desc_callback cb;
spin_lock_irq(&chan->lock);
/* For cyclic transfers notify the user after every chunk. */
if (chan->desc.running && chan->desc.running->cyclic) {
- dma_async_tx_callback callback;
- void *callback_param;
-
desc = chan->desc.running;
- callback = desc->async_tx.callback;
- callback_param = desc->async_tx.callback_param;
+ dmaengine_desc_get_callback(&desc->async_tx, &cb);
- if (callback) {
+ if (dmaengine_desc_callback_valid(&cb)) {
spin_unlock_irq(&chan->lock);
- callback(callback_param);
+ dmaengine_desc_callback_invoke(&cb, NULL);
spin_lock_irq(&chan->lock);
}
}
@@ -1418,14 +1415,15 @@
dma_cookie_complete(&desc->async_tx);
list_del(&desc->node);
- if (desc->async_tx.callback) {
+ dmaengine_desc_get_callback(&desc->async_tx, &cb);
+ if (dmaengine_desc_callback_valid(&cb)) {
spin_unlock_irq(&chan->lock);
/*
* We own the only reference to this descriptor, we can
* safely dereference it without holding the channel
* lock.
*/
- desc->async_tx.callback(desc->async_tx.callback_param);
+ dmaengine_desc_callback_invoke(&cb, NULL);
spin_lock_irq(&chan->lock);
}