Running in hardIRQ, disabling IRQ is redundant since hardIRQ has disabled
IRQ. This patch removes the irqsave and irqstore to save some instruction
cycles.
Cc: Laxman Dewangan <ldewangan@xxxxxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Acked-by: Jon Hunter <jonathanh@xxxxxxxxxx>
Signed-off-by: Barry Song <song.bao.hua@xxxxxxxxxxxxx>
---
drivers/dma/tegra210-adma.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c
index c5fa2ef74abc..4735742e826d 100644
--- a/drivers/dma/tegra210-adma.c
+++ b/drivers/dma/tegra210-adma.c
@@ -408,19 +408,18 @@ static irqreturn_t tegra_adma_isr(int irq, void *dev_id)
{
struct tegra_adma_chan *tdc = dev_id;
unsigned long status;
- unsigned long flags;
- spin_lock_irqsave(&tdc->vc.lock, flags);
+ spin_lock(&tdc->vc.lock);
status = tegra_adma_irq_clear(tdc);
if (status == 0 || !tdc->desc) {
- spin_unlock_irqrestore(&tdc->vc.lock, flags);
+ spin_unlock(&tdc->vc.lock);
return IRQ_NONE;
}
vchan_cyclic_callback(&tdc->desc->vd);
- spin_unlock_irqrestore(&tdc->vc.lock, flags);
+ spin_unlock(&tdc->vc.lock);
return IRQ_HANDLED;
}
--
2.25.1
