dmaengine: Add dma_client parameter to device_alloc_chan_resources
A DMA controller capable of doing slave transfers may need to know a
few things about the slave when preparing the channel. We don't want
to add this information to struct dma_channel since the channel hasn't
yet been bound to a client at this point.
Instead, pass a reference to the client requesting the channel to the
driver's device_alloc_chan_resources hook so that it can pick the
necessary information from the dma_client struct by itself.
[dan.j.williams@intel.com: fixed up fsldma and mv_xor]
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 4e6b052..b57564d 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -444,7 +444,8 @@
static void iop_chan_start_null_xor(struct iop_adma_chan *iop_chan);
/* returns the number of allocated descriptors */
-static int iop_adma_alloc_chan_resources(struct dma_chan *chan)
+static int iop_adma_alloc_chan_resources(struct dma_chan *chan,
+ struct dma_client *client)
{
char *hw_desc;
int idx;
@@ -838,7 +839,7 @@
dma_chan = container_of(device->common.channels.next,
struct dma_chan,
device_node);
- if (iop_adma_alloc_chan_resources(dma_chan) < 1) {
+ if (iop_adma_alloc_chan_resources(dma_chan, NULL) < 1) {
err = -ENODEV;
goto out;
}
@@ -936,7 +937,7 @@
dma_chan = container_of(device->common.channels.next,
struct dma_chan,
device_node);
- if (iop_adma_alloc_chan_resources(dma_chan) < 1) {
+ if (iop_adma_alloc_chan_resources(dma_chan, NULL) < 1) {
err = -ENODEV;
goto out;
}