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/ipu/ipu_idmac.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
index 38036db284cb..104ad420abbe 100644
--- a/drivers/dma/ipu/ipu_idmac.c
+++ b/drivers/dma/ipu/ipu_idmac.c
@@ -1160,14 +1160,13 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
struct idmac_tx_desc *desc, *descnew;
bool done = false;
u32 ready0, ready1, curbuf, err;
- unsigned long flags;
struct dmaengine_desc_callback cb;
/* IDMAC has cleared the respective BUFx_RDY bit, we manage the buffer */
dev_dbg(dev, "IDMAC irq %d, buf %d\n", irq, ichan->active_buffer);
- spin_lock_irqsave(&ipu_data.lock, flags);
+ spin_lock(&ipu_data.lock);
ready0 = idmac_read_ipureg(&ipu_data, IPU_CHA_BUF0_RDY);
ready1 = idmac_read_ipureg(&ipu_data, IPU_CHA_BUF1_RDY);
@@ -1176,7 +1175,7 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
if (err & (1 << chan_id)) {
idmac_write_ipureg(&ipu_data, 1 << chan_id, IPU_INT_STAT_4);
- spin_unlock_irqrestore(&ipu_data.lock, flags);
+ spin_unlock(&ipu_data.lock);
/*
* Doing this
* ichan->sg[0] = ichan->sg[1] = NULL;
@@ -1188,7 +1187,7 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
chan_id, ready0, ready1, curbuf);
return IRQ_HANDLED;
}
- spin_unlock_irqrestore(&ipu_data.lock, flags);
+ spin_unlock(&ipu_data.lock);
/* Other interrupts do not interfere with this channel */
spin_lock(&ichan->lock);
@@ -1251,9 +1250,9 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
if (unlikely(sgnew)) {
ipu_submit_buffer(ichan, descnew, sgnew, !ichan->active_buffer);
} else {
- spin_lock_irqsave(&ipu_data.lock, flags);
+ spin_lock(&ipu_data.lock);
ipu_ic_disable_task(&ipu_data, chan_id);
- spin_unlock_irqrestore(&ipu_data.lock, flags);
+ spin_unlock(&ipu_data.lock);
ichan->status = IPU_CHANNEL_READY;
/* Continue to check for complete descriptor */
}
--
2.25.1
