diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-01-24 13:40:49 +0530 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2012-02-06 18:25:01 -0800 |
| commit | 8bc4f556bd740789cf6fab36d1776d6d4d8bd375 (patch) | |
| tree | 40ee159b8ebc514d5e4ba7f113ea7d6f1aaa9e8a | |
| parent | 76c2f6e513b3df8031dda383838da2a3820adbe3 (diff) | |
| download | talos-obmc-linux-8bc4f556bd740789cf6fab36d1776d6d4d8bd375.tar.gz talos-obmc-linux-8bc4f556bd740789cf6fab36d1776d6d4d8bd375.zip | |
ARM: tegra: dma: not required to move requestor when stopping.
It is not require to move the requestor of dma to INVALID
option before stopping dma.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
| -rw-r--r-- | 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 998c55ddca42..abea4f6e2dd5 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); |
