diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/dma/dw/core.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index e3749ec99016..4a558d5b8c52 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -927,22 +927,26 @@ static int dwc_config(struct dma_chan *chan, struct dma_slave_config *sconfig) return 0; } -static int dwc_pause(struct dma_chan *chan) +static void dwc_chan_pause(struct dw_dma_chan *dwc) { - struct dw_dma_chan *dwc = to_dw_dma_chan(chan); - unsigned long flags; unsigned int count = 20; /* timeout iterations */ u32 cfglo; - spin_lock_irqsave(&dwc->lock, flags); - cfglo = channel_readl(dwc, CFG_LO); channel_writel(dwc, CFG_LO, cfglo | DWC_CFGL_CH_SUSP); while (!(channel_readl(dwc, CFG_LO) & DWC_CFGL_FIFO_EMPTY) && count--) udelay(2); set_bit(DW_DMA_IS_PAUSED, &dwc->flags); +} +static int dwc_pause(struct dma_chan *chan) +{ + struct dw_dma_chan *dwc = to_dw_dma_chan(chan); + unsigned long flags; + + spin_lock_irqsave(&dwc->lock, flags); + dwc_chan_pause(dwc); spin_unlock_irqrestore(&dwc->lock, flags); return 0; |