Commit d9c8d4b2 authored by Barry Song's avatar Barry Song Committed by Vinod Koul

dmaengine: hisi_dma: remove redundant irqsave and irqrestore in hardIRQ

Running in hardIRQ, disabling IRQ is redundant since hardIRQ has disabled
IRQ. This patch removes the irqsave and irqstore to save some instruction
cycles.
Signed-off-by: default avatarBarry Song <song.bao.hua@hisilicon.com>
Acked-by: default avatarZhou Wang <wangzhou1@hisilicon.com>
Link: https://lore.kernel.org/r/20201027215252.25820-8-song.bao.hua@hisilicon.comSigned-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 1ff20656
...@@ -431,9 +431,8 @@ static irqreturn_t hisi_dma_irq(int irq, void *data) ...@@ -431,9 +431,8 @@ static irqreturn_t hisi_dma_irq(int irq, void *data)
struct hisi_dma_dev *hdma_dev = chan->hdma_dev; struct hisi_dma_dev *hdma_dev = chan->hdma_dev;
struct hisi_dma_desc *desc; struct hisi_dma_desc *desc;
struct hisi_dma_cqe *cqe; struct hisi_dma_cqe *cqe;
unsigned long flags;
spin_lock_irqsave(&chan->vc.lock, flags); spin_lock(&chan->vc.lock);
desc = chan->desc; desc = chan->desc;
cqe = chan->cq + chan->cq_head; cqe = chan->cq + chan->cq_head;
...@@ -452,7 +451,7 @@ static irqreturn_t hisi_dma_irq(int irq, void *data) ...@@ -452,7 +451,7 @@ static irqreturn_t hisi_dma_irq(int irq, void *data)
chan->desc = NULL; chan->desc = NULL;
} }
spin_unlock_irqrestore(&chan->vc.lock, flags); spin_unlock(&chan->vc.lock);
return IRQ_HANDLED; return IRQ_HANDLED;
} }
......
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