xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dmaengine: Add dma_client parameter to device_alloc_chan_resources

Browse Source 
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>
This commit is contained in:
Haavard Skinnemoen
2008-07-08 11:58:58 -07:00
committed by Dan Williams
parent 4a776f0aa9
commit 848c536a37
6 changed files with 19 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/dma/mv_xor.c
View File

@@ -588,7 +588,8 @@ submit_done:
}
/* returns the number of allocated descriptors */
static int mv_xor_alloc_chan_resources(struct dma_chan *chan)
static int mv_xor_alloc_chan_resources(struct dma_chan *chan,
struct dma_client *client)
{
char *hw_desc;
int idx;
@@ -938,7 +939,7 @@ static int __devinit mv_xor_memcpy_self_test(struct mv_xor_device *device)
dma_chan = container_of(device->common.channels.next,
struct dma_chan,
device_node);
if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
if (mv_xor_alloc_chan_resources(dma_chan, NULL) < 1) {
err = -ENODEV;
goto out;
}
@@ -1033,7 +1034,7 @@ mv_xor_xor_self_test(struct mv_xor_device *device)
dma_chan = container_of(device->common.channels.next,
struct dma_chan,
device_node);
if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
if (mv_xor_alloc_chan_resources(dma_chan, NULL) < 1) {
err = -ENODEV;
goto out;
}