It is not require to move the requestor of dma to INVALID option before stopping dma.
Signed-off-by: Laxman Dewangan <[email protected]> --- arch/arm/mach-tegra/dma.c | 8 -------- 1 files changed, 0 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c index 998c55d..abea4f6 100644 --- a/arch/arm/mach-tegra/dma.c +++ b/arch/arm/mach-tegra/dma.c @@ -52,8 +52,6 @@ #define CSR_ONCE (1<<27) #define CSR_FLOW (1<<21) #define CSR_REQ_SEL_SHIFT 16 -#define CSR_REQ_SEL_MASK (0x1F<<CSR_REQ_SEL_SHIFT) -#define CSR_REQ_SEL_INVALID (31<<CSR_REQ_SEL_SHIFT) #define CSR_WCOUNT_SHIFT 2 #define CSR_WCOUNT_MASK 0xFFFC @@ -183,18 +181,12 @@ static void tegra_dma_stop(struct tegra_dma_channel *ch) static int tegra_dma_cancel(struct tegra_dma_channel *ch) { - u32 csr; unsigned long irq_flags; spin_lock_irqsave(&ch->lock, irq_flags); while (!list_empty(&ch->list)) list_del(ch->list.next); - csr = readl(ch->addr + APB_DMA_CHAN_CSR); - csr &= ~CSR_REQ_SEL_MASK; - csr |= CSR_REQ_SEL_INVALID; - writel(csr, ch->addr + APB_DMA_CHAN_CSR); - tegra_dma_stop(ch); spin_unlock_irqrestore(&ch->lock, irq_flags); -- 1.7.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
