All of lore.kernel.org
 help / color / mirror / Atom feed
From: Tian Tao <tiantao6@hisilicon.com>
To: <chunfeng.yun@mediatek.com>, <gregkh@linuxfoundation.org>,
	<matthias.bgg@gmail.com>
Cc: <linux-usb@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH] usb: mtu3: replace spin_lock_irqsave by spin_lock in hard IRQ
Date: Mon, 16 Nov 2020 16:34:42 +0800	[thread overview]
Message-ID: <1605515682-23771-1-git-send-email-tiantao6@hisilicon.com> (raw)

The code has been in a irq-disabled context since it is hard IRQ. There
is no necessity to do it again.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
---
 drivers/usb/mtu3/mtu3_core.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index b3b4599..a6d7684 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c
@@ -745,10 +745,9 @@ static irqreturn_t mtu3_u2_common_isr(struct mtu3 *mtu)
 static irqreturn_t mtu3_irq(int irq, void *data)
 {
 	struct mtu3 *mtu = (struct mtu3 *)data;
-	unsigned long flags;
 	u32 level1;
 
-	spin_lock_irqsave(&mtu->lock, flags);
+	spin_lock(&mtu->lock);
 
 	/* U3D_LV1ISR is RU */
 	level1 = mtu3_readl(mtu->mac_base, U3D_LV1ISR);
@@ -769,7 +768,7 @@ static irqreturn_t mtu3_irq(int irq, void *data)
 	if (level1 & QMU_INTR)
 		mtu3_qmu_isr(mtu);
 
-	spin_unlock_irqrestore(&mtu->lock, flags);
+	spin_unlock(&mtu->lock);
 
 	return IRQ_HANDLED;
 }
-- 
2.7.4


WARNING: multiple messages have this Message-ID (diff)
From: Tian Tao <tiantao6@hisilicon.com>
To: <chunfeng.yun@mediatek.com>, <gregkh@linuxfoundation.org>,
	<matthias.bgg@gmail.com>
Cc: linux-usb@vger.kernel.org, linux-mediatek@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH] usb: mtu3: replace spin_lock_irqsave by spin_lock in hard IRQ
Date: Mon, 16 Nov 2020 16:34:42 +0800	[thread overview]
Message-ID: <1605515682-23771-1-git-send-email-tiantao6@hisilicon.com> (raw)

The code has been in a irq-disabled context since it is hard IRQ. There
is no necessity to do it again.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
---
 drivers/usb/mtu3/mtu3_core.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index b3b4599..a6d7684 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c
@@ -745,10 +745,9 @@ static irqreturn_t mtu3_u2_common_isr(struct mtu3 *mtu)
 static irqreturn_t mtu3_irq(int irq, void *data)
 {
 	struct mtu3 *mtu = (struct mtu3 *)data;
-	unsigned long flags;
 	u32 level1;
 
-	spin_lock_irqsave(&mtu->lock, flags);
+	spin_lock(&mtu->lock);
 
 	/* U3D_LV1ISR is RU */
 	level1 = mtu3_readl(mtu->mac_base, U3D_LV1ISR);
@@ -769,7 +768,7 @@ static irqreturn_t mtu3_irq(int irq, void *data)
 	if (level1 & QMU_INTR)
 		mtu3_qmu_isr(mtu);
 
-	spin_unlock_irqrestore(&mtu->lock, flags);
+	spin_unlock(&mtu->lock);
 
 	return IRQ_HANDLED;
 }
-- 
2.7.4


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Tian Tao <tiantao6@hisilicon.com>
To: <chunfeng.yun@mediatek.com>, <gregkh@linuxfoundation.org>,
	<matthias.bgg@gmail.com>
Cc: linux-usb@vger.kernel.org, linux-mediatek@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH] usb: mtu3: replace spin_lock_irqsave by spin_lock in hard IRQ
Date: Mon, 16 Nov 2020 16:34:42 +0800	[thread overview]
Message-ID: <1605515682-23771-1-git-send-email-tiantao6@hisilicon.com> (raw)

The code has been in a irq-disabled context since it is hard IRQ. There
is no necessity to do it again.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
---
 drivers/usb/mtu3/mtu3_core.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index b3b4599..a6d7684 100644
--- a/drivers/usb/mtu3/mtu3_core.c
+++ b/drivers/usb/mtu3/mtu3_core.c
@@ -745,10 +745,9 @@ static irqreturn_t mtu3_u2_common_isr(struct mtu3 *mtu)
 static irqreturn_t mtu3_irq(int irq, void *data)
 {
 	struct mtu3 *mtu = (struct mtu3 *)data;
-	unsigned long flags;
 	u32 level1;
 
-	spin_lock_irqsave(&mtu->lock, flags);
+	spin_lock(&mtu->lock);
 
 	/* U3D_LV1ISR is RU */
 	level1 = mtu3_readl(mtu->mac_base, U3D_LV1ISR);
@@ -769,7 +768,7 @@ static irqreturn_t mtu3_irq(int irq, void *data)
 	if (level1 & QMU_INTR)
 		mtu3_qmu_isr(mtu);
 
-	spin_unlock_irqrestore(&mtu->lock, flags);
+	spin_unlock(&mtu->lock);
 
 	return IRQ_HANDLED;
 }
-- 
2.7.4


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2020-11-16  8:55 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-16  8:34 Tian Tao [this message]
2020-11-16  8:34 ` [PATCH] usb: mtu3: replace spin_lock_irqsave by spin_lock in hard IRQ Tian Tao
2020-11-16  8:34 ` Tian Tao
2020-11-25  2:33 ` Chunfeng Yun
2020-11-25  2:33   ` Chunfeng Yun
2020-11-25  2:33   ` Chunfeng Yun

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1605515682-23771-1-git-send-email-tiantao6@hisilicon.com \
    --to=tiantao6@hisilicon.com \
    --cc=chunfeng.yun@mediatek.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mediatek@lists.infradead.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=matthias.bgg@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.