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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-07-08 20:58:58 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2008-07-08 20:58:58 +0200 |
| commit | 848c536a37b8db4e461f14ca15fe29850151c822 (patch) | |
| tree | f4a88e92e31de28511e3a3de99200a77d2613dae /drivers/dma/fsldma.c | |
| parent | dmatest: Simple DMA memcpy test client (diff) | |
| download | linux-848c536a37b8db4e461f14ca15fe29850151c822.tar.xz linux-848c536a37b8db4e461f14ca15fe29850151c822.zip | |
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>
Diffstat (limited to 'drivers/dma/fsldma.c')
| -rw-r--r-- | drivers/dma/fsldma.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index 724f6fdd0af6..c0059ca58340 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -366,7 +366,8 @@ static struct fsl_desc_sw *fsl_dma_alloc_descriptor( * * Return - The number of descriptors allocated. */ -static int fsl_dma_alloc_chan_resources(struct dma_chan *chan) +static int fsl_dma_alloc_chan_resources(struct dma_chan *chan, + struct dma_client *client) { struct fsl_dma_chan *fsl_chan = to_fsl_chan(chan); LIST_HEAD(tmp_list); @@ -819,7 +820,7 @@ static int fsl_dma_self_test(struct fsl_dma_chan *fsl_chan) chan = &fsl_chan->common; - if (fsl_dma_alloc_chan_resources(chan) < 1) { + if (fsl_dma_alloc_chan_resources(chan, NULL) < 1) { dev_err(fsl_chan->dev, "selftest: Cannot alloc resources for DMA\n"); err = -ENODEV; @@ -847,7 +848,7 @@ static int fsl_dma_self_test(struct fsl_dma_chan *fsl_chan) /* Test free and re-alloc channel resources */ fsl_dma_free_chan_resources(chan); - if (fsl_dma_alloc_chan_resources(chan) < 1) { + if (fsl_dma_alloc_chan_resources(chan, NULL) < 1) { dev_err(fsl_chan->dev, "selftest: Cannot alloc resources for DMA\n"); err = -ENODEV; |