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authorDave Jiang <dave.jiang@intel.com>2016-07-20 13:11:05 -0700
committerVinod Koul <vinod.koul@intel.com>2016-08-08 08:11:38 +0530
commitdac86a148a8f363993dfe62931e0fb08d6108136 (patch)
tree761f2a0e4a6793d6ff47a4c53508948dac42c09d /drivers/dma/ep93xx_dma.c
parent577ef92512a5baf90233ab5d0dd6dd7dca33ee96 (diff)
downloadlinux-dac86a148a8f363993dfe62931e0fb08d6108136.tar.bz2
dmaengine: ep93xx_dma: 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>
Diffstat (limited to 'drivers/dma/ep93xx_dma.c')
-rw-r--r--drivers/dma/ep93xx_dma.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
index 21f08cc3352b..aba0b381cb8c 100644
--- a/drivers/dma/ep93xx_dma.c
+++ b/drivers/dma/ep93xx_dma.c
@@ -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)