linux-kernel - [PATCH for next v1 2/2] gpio: grgpio: Replace spin_lock_irqsave with spin_lock in grgpio_irq

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]

Message-ID: <1612774677-56758-3-git-send-email-luojiaxing@huawei.com>
Date:   Mon, 8 Feb 2021 16:57:57 +0800
From:   Luo Jiaxing <luojiaxing@...wei.com>
To:     <linus.walleij@...aro.org>, <andy.shevchenko@...il.com>,
        <andriy.shevchenko@...ux.intel.com>, <grygorii.strashko@...com>,
        <ssantosh@...nel.org>, <khilman@...nel.org>
CC:     <linux-gpio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...neuler.org>
Subject: [PATCH for next v1 2/2] gpio: grgpio: Replace spin_lock_irqsave with spin_lock in grgpio_irq_handler()

There is no need to use API with _irqsave in grgpio_irq_handler(),
because it already be in a irq-disabled context.

Signed-off-by: Luo Jiaxing <luojiaxing@...wei.com>
---
 drivers/gpio/gpio-grgpio.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-grgpio.c b/drivers/gpio/gpio-grgpio.c
index f954359..fa5aa31 100644
--- a/drivers/gpio/gpio-grgpio.c
+++ b/drivers/gpio/gpio-grgpio.c
@@ -195,11 +195,10 @@ static irqreturn_t grgpio_irq_handler(int irq, void *dev)
 {
 	struct grgpio_priv *priv = dev;
 	int ngpio = priv->gc.ngpio;
-	unsigned long flags;
 	int i;
 	int match = 0;
 
-	spin_lock_irqsave(&priv->gc.bgpio_lock, flags);
+	spin_lock(&priv->gc.bgpio_lock);
 
 	/*
 	 * For each gpio line, call its interrupt handler if it its underlying
@@ -215,7 +214,7 @@ static irqreturn_t grgpio_irq_handler(int irq, void *dev)
 		}
 	}
 
-	spin_unlock_irqrestore(&priv->gc.bgpio_lock, flags);
+	spin_unlock(&priv->gc.bgpio_lock);
 
 	if (!match)
 		dev_warn(priv->dev, "No gpio line matched irq %d\n", irq);
-- 
2.7.4