diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-07-30 23:28:27 +0400 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-08-01 08:48:52 +0400 |
| commit | 4f46f8ac80416b0e8fd3aba6a0d842205fb29140 (patch) | |
| tree | 1913a661d292e74ea13e2e1af38b21ef6e5fb1bc /drivers/dma/sh/shdma-base.c | |
| parent | ac694dbdbc403c00e2c14d10bc7b8412cc378259 (diff) | |
| download | linux-4f46f8ac80416b0e8fd3aba6a0d842205fb29140.tar.xz | |
dmaengine: shdma: restore partial transfer calculation
The recent shdma driver split has mistakenly removed support for partial
DMA transfer size calculation on forced termination. This patch restores
it.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/dma/sh/shdma-base.c')
| -rw-r--r-- | drivers/dma/sh/shdma-base.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c index 27f5c781fd73..f4cd946d259d 100644 --- a/drivers/dma/sh/shdma-base.c +++ b/drivers/dma/sh/shdma-base.c @@ -483,6 +483,7 @@ static struct shdma_desc *shdma_add_desc(struct shdma_chan *schan, new->mark = DESC_PREPARED; new->async_tx.flags = flags; new->direction = direction; + new->partial = 0; *len -= copy_size; if (direction == DMA_MEM_TO_MEM || direction == DMA_MEM_TO_DEV) @@ -644,6 +645,14 @@ static int shdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, case DMA_TERMINATE_ALL: spin_lock_irqsave(&schan->chan_lock, flags); ops->halt_channel(schan); + + if (ops->get_partial && !list_empty(&schan->ld_queue)) { + /* Record partial transfer */ + struct shdma_desc *desc = list_first_entry(&schan->ld_queue, + struct shdma_desc, node); + desc->partial = ops->get_partial(schan, desc); + } + spin_unlock_irqrestore(&schan->chan_lock, flags); shdma_chan_ld_cleanup(schan, true); |