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dmaengine: milbeaut-xdmac: remove redundant irqsave and irqrestore in hardIRQ

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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: Barry Song <song.bao.hua@hisilicon.com>
Link: https://lore.kernel.org/r/20201027215252.25820-6-song.bao.hua@hisilicon.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Barry Song 2020-10-28 10:52:47 +13:00 committed by Vinod Koul
parent 654115e3f6
commit 280e7f90d4
1 changed files with 2 additions and 3 deletions
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5
drivers/dma/milbeaut-xdmac.c
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@ -160,10 +160,9 @@ static irqreturn_t milbeaut_xdmac_interrupt(int irq, void *dev_id)
{
struct milbeaut_xdmac_chan *mc = dev_id;
struct milbeaut_xdmac_desc *md;
unsigned long flags;
u32 val;
spin_lock_irqsave(&mc->vc.lock, flags);
spin_lock(&mc->vc.lock);
/* Ack and Stop */
val = FIELD_PREP(M10V_XDDSD_IS_MASK, 0x0);
@ -177,7 +176,7 @@ static irqreturn_t milbeaut_xdmac_interrupt(int irq, void *dev_id)
milbeaut_xdmac_start(mc);
out:
spin_unlock_irqrestore(&mc->vc.lock, flags);
spin_unlock(&mc->vc.lock);
return IRQ_HANDLED;
}