Origianl code carries out the start operation after flush operation.
But start operation is not required for DMA_TERMINATE_ALL command.
So, This patch removes the unnecessary start operation and only carries out
the flush oeration for handling DMA_TERMINATE_ALL command.
Signed-off-by: Boojin Kim <boojin.kim@xxxxxxxxxxx>
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Acked-by: Vinod Koul <vinod.koul@xxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
drivers/dma/pl330.c | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index e7f9d1d..59943ec 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -262,10 +262,11 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan)
static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned long arg)
{
struct dma_pl330_chan *pch = to_pchan(chan);
- struct dma_pl330_desc *desc;
+ struct dma_pl330_desc *desc, *_dt;
unsigned long flags;
struct dma_pl330_dmac *pdmac = pch->dmac;
struct dma_slave_config *slave_config;
+ LIST_HEAD(list);
switch (cmd) {
case DMA_TERMINATE_ALL:
@@ -275,12 +276,14 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
pl330_chan_ctrl(pch->pl330_chid, PL330_OP_FLUSH);
/* Mark all desc done */
- list_for_each_entry(desc, &pch->work_list, node)
+ list_for_each_entry_safe(desc, _dt, &pch->work_list , node) {
desc->status = DONE;
+ pch->completed = desc->txd.cookie;
+ list_move_tail(&desc->node, &list);
+ }
+ list_splice_tail_init(&list, &pdmac->desc_pool);
spin_unlock_irqrestore(&pch->lock, flags);
-
- pl330_tasklet((unsigned long) pch);
break;
case DMA_SLAVE_CONFIG:
slave_config = (struct dma_slave_config *)arg;
--
1.7.1
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