lkml.org 
[lkml]   [2011]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 1/5] pch_dma: fix dma direction issue for ML7213 IOH video-in
Date
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>
---
V2: Update Koul-Vinod's comments
---
drivers/dma/pch_dma.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index 8d8fef1..c84b18d 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -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);
--
1.7.4


\
 
 \ /
  Last update: 2011-05-09 05:43    [W:0.054 / U:0.396 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site