Commit 1099dc79 authored Jul 08, 2008 by Haavard Skinnemoen Committed by Dan Williams Jul 08, 2008

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>

parent 65bc3ffe

drivers/dma/dmaengine.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);