[PATCH] dmaengine: moxart-dma: replace spin_lock_irqsave with spin_lock in ISR

From: jun qian
Date: Tue Sep 11 2018 - 10:18:06 EST


As you are already in ISR, it is unnecessary to call spin_lock_irqsave.

Signed-off-by: jun qian <hangdianqj@xxxxxxx>
Cc: Barry song <21cnbao@xxxxxxxxx>
---
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 e04499c1f27f..77958f123226 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);
}
}

--
2.17.1