linux-kernel - [PATCH for-next 05/32] scsi: BusLogic: Replace spin_lock_irqsave with spin

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Date:   Sun, 7 Feb 2021 19:36:36 +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 05/32] scsi: BusLogic: 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/BusLogic.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c
index ccb061a..005809e 100644
--- a/drivers/scsi/BusLogic.c
+++ b/drivers/scsi/BusLogic.c
@@ -2880,11 +2880,10 @@ static void blogic_process_ccbs(struct blogic_adapter *adapter)
 static irqreturn_t blogic_inthandler(int irq_ch, void *devid)
 {
 	struct blogic_adapter *adapter = (struct blogic_adapter *) devid;
-	unsigned long processor_flag;
 	/*
 	   Acquire exclusive access to Host Adapter.
 	 */
-	spin_lock_irqsave(adapter->scsi_host->host_lock, processor_flag);
+	spin_lock(adapter->scsi_host->host_lock);
 	/*
 	   Handle Interrupts appropriately for each Host Adapter type.
 	 */
@@ -2952,7 +2951,7 @@ static irqreturn_t blogic_inthandler(int irq_ch, void *devid)
 	/*
 	   Release exclusive access to Host Adapter.
 	 */
-	spin_unlock_irqrestore(adapter->scsi_host->host_lock, processor_flag);
+	spin_unlock(adapter->scsi_host->host_lock);
 	return IRQ_HANDLED;
 }
 
-- 
2.8.1