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async_tx: kill ->device_dependency_added

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DMA drivers no longer need to be notified of dependency submission
events as async_tx_run_dependencies and async_tx_channel_switch will
handle the scheduling and execution of dependent operations.

[sfr@canb.auug.org.au: extend this for fsldma]
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2008-04-17 20:17:26 -07:00
parent 19242d7233
commit ce4d65a5db
5 changed files with 0 additions and 30 deletions
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1
drivers/dma/dmaengine.c
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@ -362,7 +362,6 @@ int dma_async_device_register(struct dma_device *device)
BUG_ON(!device->device_alloc_chan_resources);
BUG_ON(!device->device_free_chan_resources);
BUG_ON(!device->device_dependency_added);
BUG_ON(!device->device_is_tx_complete);
BUG_ON(!device->device_issue_pending);
BUG_ON(!device->dev);

8
drivers/dma/fsldma.c
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@ -658,13 +658,6 @@ static void fsl_dma_memcpy_issue_pending(struct dma_chan *chan)
fsl_chan_xfer_ld_queue(fsl_chan);
}
static void fsl_dma_dependency_added(struct dma_chan *chan)
{
struct fsl_dma_chan *fsl_chan = to_fsl_chan(chan);
fsl_chan_ld_cleanup(fsl_chan);
}
/**
* fsl_dma_is_complete - Determine the DMA status
* @fsl_chan : Freescale DMA channel
@ -1089,7 +1082,6 @@ static int __devinit of_fsl_dma_probe(struct of_device *dev,
fdev->common.device_prep_dma_memcpy = fsl_dma_prep_memcpy;
fdev->common.device_is_tx_complete = fsl_dma_is_complete;
fdev->common.device_issue_pending = fsl_dma_memcpy_issue_pending;
fdev->common.device_dependency_added = fsl_dma_dependency_added;
fdev->common.dev = &dev->dev;
irq = irq_of_parse_and_map(dev->node, 0);

12
drivers/dma/ioat_dma.c
View File

@ -924,17 +924,6 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan)
spin_unlock_bh(&ioat_chan->cleanup_lock);
}
static void ioat_dma_dependency_added(struct dma_chan *chan)
{
struct ioat_dma_chan *ioat_chan = to_ioat_chan(chan);
spin_lock_bh(&ioat_chan->desc_lock);
if (ioat_chan->pending == 0) {
spin_unlock_bh(&ioat_chan->desc_lock);
ioat_dma_memcpy_cleanup(ioat_chan);
} else
spin_unlock_bh(&ioat_chan->desc_lock);
}
/**
* ioat_dma_is_complete - poll the status of a IOAT DMA transaction
* @chan: IOAT DMA channel handle
@ -1316,7 +1305,6 @@ struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev,
dma_cap_set(DMA_MEMCPY, device->common.cap_mask);
device->common.device_is_tx_complete = ioat_dma_is_complete;
device->common.device_dependency_added = ioat_dma_dependency_added;
switch (device->version) {
case IOAT_VER_1_2:
device->common.device_prep_dma_memcpy = ioat1_dma_prep_memcpy;

7
drivers/dma/iop-adma.c
View File

@ -672,12 +672,6 @@ iop_adma_prep_dma_zero_sum(struct dma_chan *chan, dma_addr_t *dma_src,
return sw_desc ? &sw_desc->async_tx : NULL;
}
static void iop_adma_dependency_added(struct dma_chan *chan)
{
struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
tasklet_schedule(&iop_chan->irq_tasklet);
}
static void iop_adma_free_chan_resources(struct dma_chan *chan)
{
struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
@ -1178,7 +1172,6 @@ static int __devinit iop_adma_probe(struct platform_device *pdev)
dma_dev->device_free_chan_resources = iop_adma_free_chan_resources;
dma_dev->device_is_tx_complete = iop_adma_is_complete;
dma_dev->device_issue_pending = iop_adma_issue_pending;
dma_dev->device_dependency_added = iop_adma_dependency_added;
dma_dev->dev = &pdev->dev;
/* set prep routines based on capability */

2
include/linux/dmaengine.h
View File

@ -258,7 +258,6 @@ struct dma_async_tx_descriptor {
* @device_prep_dma_zero_sum: prepares a zero_sum operation
* @device_prep_dma_memset: prepares a memset operation
* @device_prep_dma_interrupt: prepares an end of chain interrupt operation
* @device_dependency_added: async_tx notifies the channel about new deps
* @device_issue_pending: push pending transactions to hardware
*/
struct dma_device {
@ -293,7 +292,6 @@ struct dma_device {
struct dma_async_tx_descriptor *(*device_prep_dma_interrupt)(
struct dma_chan *chan);
void (*device_dependency_added)(struct dma_chan *chan);
enum dma_status (*device_is_tx_complete)(struct dma_chan *chan,
dma_cookie_t cookie, dma_cookie_t *last,
dma_cookie_t *used);