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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
parent65bc3ffe8c067e387fe5557bc3ea5071071f6af9 (diff)
downloadlinux-1099dc79245719c046e632212ec09d6ec1154ef5.tar.bz2
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>
-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 97b329e76798..99c22b42bada 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);