diff options
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/dw_dmac.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 43a5329d448..43e2e89886c 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -1030,10 +1030,11 @@ set_runtime_config(struct dma_chan *chan, struct dma_slave_config *sconfig) static inline void dwc_chan_pause(struct dw_dma_chan *dwc) { u32 cfglo = channel_readl(dwc, CFG_LO); + unsigned int count = 20; /* timeout iterations */ channel_writel(dwc, CFG_LO, cfglo | DWC_CFGL_CH_SUSP); - while (!(channel_readl(dwc, CFG_LO) & DWC_CFGL_FIFO_EMPTY)) - cpu_relax(); + while (!(channel_readl(dwc, CFG_LO) & DWC_CFGL_FIFO_EMPTY) && count--) + udelay(2); dwc->paused = true; } |