linux-kernel - [PATCH for-next 25/32] scsi: pcmcia: Replace spin_lock_irqsave with spin

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Message-ID: <1612697823-8073-26-git-send-email-tanxiaofei@huawei.com>
Date:   Sun, 7 Feb 2021 19:36:56 +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 25/32] scsi: pcmcia: 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/pcmcia/sym53c500_cs.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c
index a366ff1..67719de 100644
--- a/drivers/scsi/pcmcia/sym53c500_cs.c
+++ b/drivers/scsi/pcmcia/sym53c500_cs.c
@@ -341,7 +341,6 @@ SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int
 static irqreturn_t
 SYM53C500_intr(int irq, void *dev_id)
 {
-	unsigned long flags;
 	struct Scsi_Host *dev = dev_id;
 	DEB(unsigned char fifo_size;)
 	DEB(unsigned char seq_reg;)
@@ -353,7 +352,7 @@ SYM53C500_intr(int irq, void *dev_id)
 	struct scsi_cmnd *curSC = data->current_SC;
 	int fast_pio = data->fast_pio;
 
-	spin_lock_irqsave(dev->host_lock, flags);
+	spin_lock(dev->host_lock);
 
 	VDEB(printk("SYM53C500_intr called\n"));
 
@@ -487,7 +486,7 @@ SYM53C500_intr(int irq, void *dev_id)
 		break;
 	}
 out:
-	spin_unlock_irqrestore(dev->host_lock, flags);
+	spin_unlock(dev->host_lock);
 	return IRQ_HANDLED;
 
 idle_out:
-- 
2.8.1