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| author | Boojin Kim <boojin.kim@samsung.com> | 2011-09-02 09:44:32 +0900 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2011-09-14 11:10:01 +0530 |
| commit | ae43b886f174297366d4e09a008ad8e6592d95df (patch) | |
| tree | ff52b7da54a8a9f2e4126413d7a38c5f8f8c8d7b /drivers/dma/pl330.c | |
| parent | 1d0c1d606d787e833ee3bd9e1cda640e75c4681a (diff) | |
| download | kernel_samsung_smdk4412-ae43b886f174297366d4e09a008ad8e6592d95df.zip kernel_samsung_smdk4412-ae43b886f174297366d4e09a008ad8e6592d95df.tar.gz kernel_samsung_smdk4412-ae43b886f174297366d4e09a008ad8e6592d95df.tar.bz2 | |
DMA: PL330: Remove the start operation for handling DMA_TERMINATE_ALL command
Original 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 operation for handling DMA_TERMINATE_ALL command.
Signed-off-by: Boojin Kim <boojin.kim@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
[Fixed typos in changelog]
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/pl330.c')
| -rw-r--r-- | 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; |