linux-kernel - [PATCH for-next 07/32] scsi: a2091: Replace spin_lock_irqsave with spin

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sun, 7 Feb 2021 19:36:38 +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 07/32] scsi: a2091: 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/a2091.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/a2091.c b/drivers/scsi/a2091.c
index 5853db3..5b23602 100644
--- a/drivers/scsi/a2091.c
+++ b/drivers/scsi/a2091.c
@@ -27,14 +27,13 @@ static irqreturn_t a2091_intr(int irq, void *data)
 	struct Scsi_Host *instance = data;
 	struct a2091_hostdata *hdata = shost_priv(instance);
 	unsigned int status = hdata->regs->ISTR;
-	unsigned long flags;
 
 	if (!(status & (ISTR_INT_F | ISTR_INT_P)) || !(status & ISTR_INTS))
 		return IRQ_NONE;
 
-	spin_lock_irqsave(instance->host_lock, flags);
+	spin_lock(instance->host_lock);
 	wd33c93_intr(instance);
-	spin_unlock_irqrestore(instance->host_lock, flags);
+	spin_unlock(instance->host_lock);
 	return IRQ_HANDLED;
 }
 
-- 
2.8.1