dmaengine: milbeaut-xdmac: 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: 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>
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@ -160,10 +160,9 @@ static irqreturn_t milbeaut_xdmac_interrupt(int irq, void *dev_id)
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{
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struct milbeaut_xdmac_chan *mc = dev_id;
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struct milbeaut_xdmac_desc *md;
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unsigned long flags;
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u32 val;
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spin_lock_irqsave(&mc->vc.lock, flags);
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spin_lock(&mc->vc.lock);
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/* Ack and Stop */
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val = FIELD_PREP(M10V_XDDSD_IS_MASK, 0x0);
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@ -177,7 +176,7 @@ static irqreturn_t milbeaut_xdmac_interrupt(int irq, void *dev_id)
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milbeaut_xdmac_start(mc);
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out:
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spin_unlock_irqrestore(&mc->vc.lock, flags);
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spin_unlock(&mc->vc.lock);
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return IRQ_HANDLED;
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}
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