diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/amba-pl08x.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index fada97873d7..d47255ee950 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1363,6 +1363,18 @@ static int pl08x_prep_channel_resources(struct pl08x_dma_chan *plchan, return 0; } +static struct pl08x_txd *pl08x_get_txd(struct pl08x_dma_chan *plchan) +{ + struct pl08x_txd *txd = kzalloc(sizeof(struct pl08x_txd), GFP_NOWAIT); + + if (txd) { + dma_async_tx_descriptor_init(&txd->tx, &plchan->chan); + txd->tx.tx_submit = pl08x_tx_submit; + INIT_LIST_HEAD(&txd->node); + } + return txd; +} + /* * Initialize a descriptor to be used by memcpy submit */ @@ -1375,14 +1387,13 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy( struct pl08x_txd *txd; int ret; - txd = kzalloc(sizeof(struct pl08x_txd), GFP_NOWAIT); + txd = pl08x_get_txd(plchan); if (!txd) { dev_err(&pl08x->adev->dev, "%s no memory for descriptor\n", __func__); return NULL; } - dma_async_tx_descriptor_init(&txd->tx, chan); txd->direction = DMA_NONE; txd->srcbus.addr = src; txd->dstbus.addr = dest; @@ -1391,12 +1402,8 @@ static struct dma_async_tx_descriptor *pl08x_prep_dma_memcpy( txd->cd = &pl08x->pd->memcpy_channel; /* Both to be incremented or the code will break */ txd->cd->cctl |= PL080_CONTROL_SRC_INCR | PL080_CONTROL_DST_INCR; - txd->tx.tx_submit = pl08x_tx_submit; - txd->tx.callback = NULL; - txd->tx.callback_param = NULL; txd->len = len; - INIT_LIST_HEAD(&txd->node); ret = pl08x_prep_channel_resources(plchan, txd); if (ret) return NULL; @@ -1430,14 +1437,12 @@ static struct dma_async_tx_descriptor *pl08x_prep_slave_sg( dev_dbg(&pl08x->adev->dev, "%s prepare transaction of %d bytes from %s\n", __func__, sgl->length, plchan->name); - txd = kzalloc(sizeof(struct pl08x_txd), GFP_NOWAIT); + txd = pl08x_get_txd(plchan); if (!txd) { dev_err(&pl08x->adev->dev, "%s no txd\n", __func__); return NULL; } - dma_async_tx_descriptor_init(&txd->tx, chan); - if (direction != plchan->runtime_direction) dev_err(&pl08x->adev->dev, "%s DMA setup does not match " "the direction configured for the PrimeCell\n", @@ -1467,11 +1472,7 @@ static struct dma_async_tx_descriptor *pl08x_prep_slave_sg( return NULL; } txd->cd = plchan->cd; - txd->tx.tx_submit = pl08x_tx_submit; - txd->tx.callback = NULL; - txd->tx.callback_param = NULL; txd->len = sgl->length; - INIT_LIST_HEAD(&txd->node); ret = pl08x_prep_channel_resources(plchan, txd); if (ret) |