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[for-next,15/32] scsi: initio: Replace spin_lock_irqsave with spin_lock in hard IRQ

Message ID 1612697823-8073-16-git-send-email-tanxiaofei@huawei.com
State New
Headers show
Series spin lock usage optimization for SCSI drivers | expand

Commit Message

Xiaofei Tan Feb. 7, 2021, 11:36 a.m. UTC
It is redundant to do irqsave and irqrestore in hardIRQ context, where
it has been in a irq-disabled context.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
---
 drivers/scsi/initio.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/initio.c b/drivers/scsi/initio.c
index 814acc5..3fafa8f 100644
--- a/drivers/scsi/initio.c
+++ b/drivers/scsi/initio.c
@@ -2507,12 +2507,11 @@  static int initio_wait_done_disc(struct initio_host * host)
 static irqreturn_t i91u_intr(int irqno, void *dev_id)
 {
 	struct Scsi_Host *dev = dev_id;
-	unsigned long flags;
 	int r;
 	
-	spin_lock_irqsave(dev->host_lock, flags);
+	spin_lock(dev->host_lock);
 	r = initio_isr((struct initio_host *)dev->hostdata);
-	spin_unlock_irqrestore(dev->host_lock, flags);
+	spin_unlock(dev->host_lock);
 	if (r)
 		return IRQ_HANDLED;
 	else