linux-kernel - [PATCH for-next 32/32] scsi: advansys: Replace spin_lock_irqsave with spin

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Message-ID: <1612697823-8073-33-git-send-email-tanxiaofei@huawei.com>
Date:   Sun, 7 Feb 2021 19:37:03 +0800
From:   Xiaofei Tan <tanxiaofei@...wei.com>
To:     <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>
CC:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...neuler.org>, Xiaofei Tan <tanxiaofei@...wei.com>
Subject: [PATCH for-next 32/32] scsi: advansys: Replace spin_lock_irqsave with spin_lock in hard IRQ

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@...wei.com>
---
 drivers/scsi/advansys.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
index ec56278..a80f5e2 100644
--- a/drivers/scsi/advansys.c
+++ b/drivers/scsi/advansys.c
@@ -7177,10 +7177,9 @@ static irqreturn_t advansys_interrupt(int irq, void *dev_id)
 	struct Scsi_Host *shost = dev_id;
 	struct asc_board *boardp = shost_priv(shost);
 	irqreturn_t result = IRQ_NONE;
-	unsigned long flags;
 
 	ASC_DBG(2, "boardp 0x%p\n", boardp);
-	spin_lock_irqsave(shost->host_lock, flags);
+	spin_lock(shost->host_lock);
 	if (ASC_NARROW_BOARD(boardp)) {
 		if (AscIsIntPending(shost->io_port)) {
 			result = IRQ_HANDLED;
@@ -7195,7 +7194,7 @@ static irqreturn_t advansys_interrupt(int irq, void *dev_id)
 			ASC_STATS(shost, interrupt);
 		}
 	}
-	spin_unlock_irqrestore(shost->host_lock, flags);
+	spin_unlock(shost->host_lock);
 
 	ASC_DBG(1, "end\n");
 	return result;
-- 
2.8.1