diff options
Diffstat (limited to 'drivers/dma/dw')
| -rw-r--r-- | drivers/dma/dw/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/dma/dw/core.c | 18 |
2 files changed, 9 insertions, 11 deletions
diff --git a/drivers/dma/dw/Kconfig b/drivers/dma/dw/Kconfig index dcfe964cc8dc..36e02f0f645e 100644 --- a/drivers/dma/dw/Kconfig +++ b/drivers/dma/dw/Kconfig @@ -3,7 +3,7 @@ # config DW_DMAC_CORE - tristate "Synopsys DesignWare AHB DMA support" + tristate select DMA_ENGINE config DW_DMAC diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index a8ad05291b27..1022c2e1a2b0 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -230,7 +230,8 @@ static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first) /* ASSERT: channel is idle */ if (dma_readl(dw, CH_EN) & dwc->mask) { dev_err(chan2dev(&dwc->chan), - "BUG: Attempted to start non-idle channel\n"); + "%s: BUG: Attempted to start non-idle channel\n", + __func__); dwc_dump_chan_regs(dwc); /* The tasklet will hopefully advance the queue... */ @@ -814,11 +815,8 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, slave_sg_todev_fill_desc: desc = dwc_desc_get(dwc); - if (!desc) { - dev_err(chan2dev(chan), - "not enough descriptors available\n"); + if (!desc) goto err_desc_get; - } desc->lli.sar = mem; desc->lli.dar = reg; @@ -874,11 +872,8 @@ slave_sg_todev_fill_desc: slave_sg_fromdev_fill_desc: desc = dwc_desc_get(dwc); - if (!desc) { - dev_err(chan2dev(chan), - "not enough descriptors available\n"); + if (!desc) goto err_desc_get; - } desc->lli.sar = reg; desc->lli.dar = mem; @@ -922,6 +917,8 @@ slave_sg_fromdev_fill_desc: return &first->txd; err_desc_get: + dev_err(chan2dev(chan), + "not enough descriptors available. Direction %d\n", direction); dwc_desc_put(dwc, first); return NULL; } @@ -1261,7 +1258,8 @@ int dw_dma_cyclic_start(struct dma_chan *chan) /* Assert channel is idle */ if (dma_readl(dw, CH_EN) & dwc->mask) { dev_err(chan2dev(&dwc->chan), - "BUG: Attempted to start non-idle channel\n"); + "%s: BUG: Attempted to start non-idle channel\n", + __func__); dwc_dump_chan_regs(dwc); spin_unlock_irqrestore(&dwc->lock, flags); return -EBUSY; |