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@xxxxxxxxxxxxx>
---
drivers/dma/moxart-dma.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/moxart-dma.c b/drivers/dma/moxart-dma.c
index 347146a6e1d0..74755093e14b 100644
--- a/drivers/dma/moxart-dma.c
+++ b/drivers/dma/moxart-dma.c
@@ -524,7 +524,6 @@ static irqreturn_t moxart_dma_interrupt(int irq, void *devid)
struct moxart_dmadev *mc = devid;
struct moxart_chan *ch = &mc->slave_chans[0];
unsigned int i;
- unsigned long flags;
u32 ctrl;
dev_dbg(chan2dev(&ch->vc.chan), "%s\n", __func__);
@@ -541,14 +540,14 @@ static irqreturn_t moxart_dma_interrupt(int irq, void *devid)
if (ctrl & APB_DMA_FIN_INT_STS) {
ctrl &= ~APB_DMA_FIN_INT_STS;
if (ch->desc) {
- spin_lock_irqsave(&ch->vc.lock, flags);
+ spin_lock(&ch->vc.lock);
if (++ch->sgidx < ch->desc->sglen) {
moxart_dma_start_sg(ch, ch->sgidx);
} else {
vchan_cookie_complete(&ch->desc->vd);
moxart_dma_start_desc(&ch->vc.chan);
}
- spin_unlock_irqrestore(&ch->vc.lock, flags);
+ spin_unlock(&ch->vc.lock);
}
}
--
2.25.1
