openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

dmaengine: at_xdmac: Add DMA_PRIVATE 

same issue as commit 7f5ae3553685:
"Without DMA_PRIVATE the driver is not able to allocate more than one channel.
Since it uses dma_get_any_slave_channel that calls private_candidate, the
second allocation fails at
/* some channels are already publicly allocated */
"

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Ludovic Desroches 2014-11-13 11:52:45 +01:00 committed by Vinod Koul
parent 466b3cf17e
commit fef4cbf2ab
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/dma/at_xdmac.c
View File

@ -1394,6 +1394,11 @@ static int at_xdmac_probe(struct platform_device *pdev)
dma_cap_set(DMA_CYCLIC, atxdmac->dma.cap_mask);
dma_cap_set(DMA_MEMCPY, atxdmac->dma.cap_mask);
dma_cap_set(DMA_SLAVE, atxdmac->dma.cap_mask);
/*
* Without DMA_PRIVATE the driver is not able to allocate more than
* one channel, second allocation fails in private_candidate.
*/
dma_cap_set(DMA_PRIVATE, atxdmac->dma.cap_mask);
atxdmac->dma.dev = &pdev->dev;
atxdmac->dma.device_alloc_chan_resources = at_xdmac_alloc_chan_resources;
atxdmac->dma.device_free_chan_resources = at_xdmac_free_chan_resources;