To: <linux-kernel@...>, Dan Williams <dan.j.williams@...>
Cc: Shannon Nelson <shannon.nelson@...>, David Brownell <david-b@...>, <kernel@...>, Francis Moreau <francis.moro@...>, Paul Mundt <lethal@...>, Vladimir A. Barinov <vbarinov@...>, Pierre Ossman <drzeus-list@...>, Haavard Skinnemoen <hskinnemoen@...>
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>
---
drivers/dma/dmaengine.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 2996523..7c7cb4b 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -379,7 +379,7 @@ 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);
--
1.5.3.8
--
