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pch_dma: fix dma direction issue for ML7213 IOH video-in 

Currently, even-channel number is set as tx direction and odd is set as rx.
However, though video-in uses ch6, the direction is not tx but rx.
This patch sets video-in's DMA direction correctly.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Tomoya MORINAGA 2011-05-09 16:09:35 +09:00 committed by Vinod Koul
parent e257e1563f
commit c8fcba600c
1 changed files with 3 additions and 3 deletions
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6
drivers/dma/pch_dma.c
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@ -478,7 +478,6 @@ static int pd_alloc_chan_resources(struct dma_chan *chan)
spin_unlock_bh(&pd_chan->lock);
pdc_enable_irq(chan, 1);
pdc_set_dir(chan);
return pd_chan->descs_allocated;
}
@ -561,6 +560,9 @@ static struct dma_async_tx_descriptor *pd_prep_slave_sg(struct dma_chan *chan,
else
return NULL;
pd_chan->dir = direction;
pdc_set_dir(chan);
for_each_sg(sgl, sg, sg_len, i) {
desc = pdc_desc_get(pd_chan);
@ -850,8 +852,6 @@ static int __devinit pch_dma_probe(struct pci_dev *pdev,
pd_chan->membase = &regs->desc[i];
pd_chan->dir = (i % 2) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
spin_lock_init(&pd_chan->lock);
INIT_LIST_HEAD(&pd_chan->active_list);