diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2014-06-18 13:15:36 +0400 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-07-15 20:44:28 +0400 |
| commit | e7637c6c0382485f4d2e20715d058dae6f2b6a7c (patch) | |
| tree | 613b0b426ca802c840a4f9d4bc395d2aad3c42b1 /drivers/dma/dw | |
| parent | f60f141ca5c106c8fa71abe324efb310b96621d1 (diff) | |
| download | linux-e7637c6c0382485f4d2e20715d058dae6f2b6a7c.tar.xz | |
dmaengine: dw: introduce dwc_dostart_first_queued() helper
We have a duplicate code which starts first descriptor in the queue. Let's make
this as a separate helper that can be used in future as well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/dw')
| -rw-r--r-- | drivers/dma/dw/core.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index a27ded53ab4f..5ddf5e4c1222 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -279,6 +279,15 @@ static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first) channel_set_bit(dw, CH_EN, dwc->mask); } +static void dwc_dostart_first_queued(struct dw_dma_chan *dwc) +{ + if (list_empty(&dwc->queue)) + return; + + list_move(dwc->queue.next, &dwc->active_list); + dwc_dostart(dwc, dwc_first_active(dwc)); +} + /*----------------------------------------------------------------------*/ static void @@ -335,10 +344,7 @@ static void dwc_complete_all(struct dw_dma *dw, struct dw_dma_chan *dwc) * the completed ones. */ list_splice_init(&dwc->active_list, &list); - if (!list_empty(&dwc->queue)) { - list_move(dwc->queue.next, &dwc->active_list); - dwc_dostart(dwc, dwc_first_active(dwc)); - } + dwc_dostart_first_queued(dwc); spin_unlock_irqrestore(&dwc->lock, flags); @@ -467,10 +473,7 @@ static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc) /* Try to continue after resetting the channel... */ dwc_chan_disable(dw, dwc); - if (!list_empty(&dwc->queue)) { - list_move(dwc->queue.next, &dwc->active_list); - dwc_dostart(dwc, dwc_first_active(dwc)); - } + dwc_dostart_first_queued(dwc); spin_unlock_irqrestore(&dwc->lock, flags); } |