diff options
| -rw-r--r-- | drivers/dma/hsu/hsu.c | 39 | ||||
| -rw-r--r-- | drivers/dma/hsu/hsu.h | 1 |
2 files changed, 4 insertions, 36 deletions
diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c index f42f71e37e73..7669c7dd1e34 100644 --- a/drivers/dma/hsu/hsu.c +++ b/drivers/dma/hsu/hsu.c @@ -99,21 +99,13 @@ static void hsu_dma_chan_start(struct hsu_dma_chan *hsuc) static void hsu_dma_stop_channel(struct hsu_dma_chan *hsuc) { - unsigned long flags; - - spin_lock_irqsave(&hsuc->lock, flags); hsu_chan_disable(hsuc); hsu_chan_writel(hsuc, HSU_CH_DCR, 0); - spin_unlock_irqrestore(&hsuc->lock, flags); } static void hsu_dma_start_channel(struct hsu_dma_chan *hsuc) { - unsigned long flags; - - spin_lock_irqsave(&hsuc->lock, flags); hsu_dma_chan_start(hsuc); - spin_unlock_irqrestore(&hsuc->lock, flags); } static void hsu_dma_start_transfer(struct hsu_dma_chan *hsuc) @@ -139,9 +131,9 @@ static u32 hsu_dma_chan_get_sr(struct hsu_dma_chan *hsuc) unsigned long flags; u32 sr; - spin_lock_irqsave(&hsuc->lock, flags); + spin_lock_irqsave(&hsuc->vchan.lock, flags); sr = hsu_chan_readl(hsuc, HSU_CH_SR); - spin_unlock_irqrestore(&hsuc->lock, flags); + spin_unlock_irqrestore(&hsuc->vchan.lock, flags); return sr; } @@ -273,14 +265,11 @@ static size_t hsu_dma_active_desc_size(struct hsu_dma_chan *hsuc) struct hsu_dma_desc *desc = hsuc->desc; size_t bytes = hsu_dma_desc_size(desc); int i; - unsigned long flags; - spin_lock_irqsave(&hsuc->lock, flags); i = desc->active % HSU_DMA_CHAN_NR_DESC; do { bytes += hsu_chan_readl(hsuc, HSU_CH_DxTSR(i)); } while (--i >= 0); - spin_unlock_irqrestore(&hsuc->lock, flags); return bytes; } @@ -327,24 +316,6 @@ static int hsu_dma_slave_config(struct dma_chan *chan, return 0; } -static void hsu_dma_chan_deactivate(struct hsu_dma_chan *hsuc) -{ - unsigned long flags; - - spin_lock_irqsave(&hsuc->lock, flags); - hsu_chan_disable(hsuc); - spin_unlock_irqrestore(&hsuc->lock, flags); -} - -static void hsu_dma_chan_activate(struct hsu_dma_chan *hsuc) -{ - unsigned long flags; - - spin_lock_irqsave(&hsuc->lock, flags); - hsu_chan_enable(hsuc); - spin_unlock_irqrestore(&hsuc->lock, flags); -} - static int hsu_dma_pause(struct dma_chan *chan) { struct hsu_dma_chan *hsuc = to_hsu_dma_chan(chan); @@ -352,7 +323,7 @@ static int hsu_dma_pause(struct dma_chan *chan) spin_lock_irqsave(&hsuc->vchan.lock, flags); if (hsuc->desc && hsuc->desc->status == DMA_IN_PROGRESS) { - hsu_dma_chan_deactivate(hsuc); + hsu_chan_disable(hsuc); hsuc->desc->status = DMA_PAUSED; } spin_unlock_irqrestore(&hsuc->vchan.lock, flags); @@ -368,7 +339,7 @@ static int hsu_dma_resume(struct dma_chan *chan) spin_lock_irqsave(&hsuc->vchan.lock, flags); if (hsuc->desc && hsuc->desc->status == DMA_PAUSED) { hsuc->desc->status = DMA_IN_PROGRESS; - hsu_dma_chan_activate(hsuc); + hsu_chan_enable(hsuc); } spin_unlock_irqrestore(&hsuc->vchan.lock, flags); @@ -441,8 +412,6 @@ int hsu_dma_probe(struct hsu_dma_chip *chip) hsuc->direction = (i & 0x1) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV; hsuc->reg = addr + i * HSU_DMA_CHAN_LENGTH; - - spin_lock_init(&hsuc->lock); } dma_cap_set(DMA_SLAVE, hsu->dma.cap_mask); diff --git a/drivers/dma/hsu/hsu.h b/drivers/dma/hsu/hsu.h index 0275233cf550..eeb9fff66967 100644 --- a/drivers/dma/hsu/hsu.h +++ b/drivers/dma/hsu/hsu.h @@ -78,7 +78,6 @@ struct hsu_dma_chan { struct virt_dma_chan vchan; void __iomem *reg; - spinlock_t lock; /* hardware configuration */ enum dma_transfer_direction direction; |