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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2008-07-08 11:58:05 -0700
committerDan Williams <dan.j.williams@intel.com>2008-07-08 11:58:05 -0700
commit1099dc79245719c046e632212ec09d6ec1154ef5 (patch)
treee80912e5d819d131d51b6845d8aff03bd7f2b9f6 /drivers/dma
parent65bc3ffe8c067e387fe5557bc3ea5071071f6af9 (diff)
downloadop-kernel-dev-1099dc79245719c046e632212ec09d6ec1154ef5.zip
op-kernel-dev-1099dc79245719c046e632212ec09d6ec1154ef5.tar.gz
dmaengine: Couple DMA channels to their physical DMA device
Set the 'parent' field of channel class devices to point to the physical DMA device initialized by the DMA engine driver. This allows drivers to use chan->dev.parent for syncing DMA buffers and adds a 'device' symlink to the real device in /sys/class/dma/dmaXchanY. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dmaengine.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 97b329e..99c22b4 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -378,7 +378,7 @@ int dma_async_device_register(struct dma_device *device)
chan->chan_id = chancnt++;
chan->dev.class = &dma_devclass;
- chan->dev.parent = NULL;
+ chan->dev.parent = device->dev;
snprintf(chan->dev.bus_id, BUS_ID_SIZE, "dma%dchan%d",
device->dev_id, chan->chan_id);
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