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dmaengine: ep93xx_dma: convert callback to helper function

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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>
This commit is contained in:
Dave Jiang 2016-07-20 13:11:05 -07:00 committed by Vinod Koul
parent 577ef92512
commit dac86a148a
1 changed files with 4 additions and 6 deletions
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10
drivers/dma/ep93xx_dma.c
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@ -739,10 +739,10 @@ static void ep93xx_dma_tasklet(unsigned long data)
{
struct ep93xx_dma_chan *edmac = (struct ep93xx_dma_chan *)data;
struct ep93xx_dma_desc *desc, *d;
dma_async_tx_callback callback = NULL;
void *callback_param = NULL;
struct dmaengine_desc_callback cb;
LIST_HEAD(list);
memset(&cb, 0, sizeof(cb));
spin_lock_irq(&edmac->lock);
/*
* If dma_terminate_all() was called before we get to run, the active
@ -757,8 +757,7 @@ static void ep93xx_dma_tasklet(unsigned long data)
dma_cookie_complete(&desc->txd);
list_splice_init(&edmac->active, &list);
}
callback = desc->txd.callback;
callback_param = desc->txd.callback_param;
dmaengine_desc_get_callback(&desc->txd, &cb);
}
spin_unlock_irq(&edmac->lock);
@ -771,8 +770,7 @@ static void ep93xx_dma_tasklet(unsigned long data)
ep93xx_dma_desc_put(edmac, desc);
}
if (callback)
callback(callback_param);
dmaengine_desc_callback_invoke(&cb, NULL);
}
static irqreturn_t ep93xx_dma_interrupt(int irq, void *dev_id)