diff options
Diffstat (limited to 'arch/arm/plat-omap/dma.c')
| -rw-r--r-- | arch/arm/plat-omap/dma.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index bb045e5ddbd8..f3f84fbf8b87 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -557,7 +557,7 @@ int omap_request_dma(int dev_id, const char *dev_name, omap_enable_channel_irq(free_ch); /* Clear the CSR register and IRQ status register */ OMAP_DMA_CSR_REG(free_ch) = OMAP2_DMA_CSR_CLEAR_MASK; - omap_writel(~0x0, OMAP_DMA4_IRQSTATUS_L0); + omap_writel(1 << free_ch, OMAP_DMA4_IRQSTATUS_L0); } *dma_ch_out = free_ch; @@ -597,10 +597,7 @@ void omap_free_dma(int lch) /* Clear the CSR register and IRQ status register */ OMAP_DMA_CSR_REG(lch) = OMAP2_DMA_CSR_CLEAR_MASK; - - val = omap_readl(OMAP_DMA4_IRQSTATUS_L0); - val |= 1 << lch; - omap_writel(val, OMAP_DMA4_IRQSTATUS_L0); + omap_writel(1 << lch, OMAP_DMA4_IRQSTATUS_L0); /* Disable all DMA interrupts for the channel. */ OMAP_DMA_CICR_REG(lch) = 0; @@ -927,7 +924,6 @@ static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id) static int omap2_dma_handle_ch(int ch) { u32 status = OMAP_DMA_CSR_REG(ch); - u32 val; if (!status) return 0; @@ -948,11 +944,7 @@ static int omap2_dma_handle_ch(int ch) dma_chan[ch].dev_id); OMAP_DMA_CSR_REG(ch) = OMAP2_DMA_CSR_CLEAR_MASK; - - val = omap_readl(OMAP_DMA4_IRQSTATUS_L0); - /* ch in this function is from 0-31 while in register it is 1-32 */ - val = 1 << (ch); - omap_writel(val, OMAP_DMA4_IRQSTATUS_L0); + omap_writel(1 << ch, OMAP_DMA4_IRQSTATUS_L0); if (likely(dma_chan[ch].callback != NULL)) dma_chan[ch].callback(ch, status, dma_chan[ch].data); |