From: Tian Tao <tiantao6@hisilicon.com>
To: <Damien.LeMoal@wdc.com>, <axboe@kernel.dk>,
<linux-block@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH] skd: replace spin_lock_irqsave by spin_lock in hard IRQ
Date: Wed, 21 Oct 2020 09:16:46 +0800 [thread overview]
Message-ID: <1603243006-9189-1-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/block/skd_main.c | 25 ++++++++++---------------
1 file changed, 10 insertions(+), 15 deletions(-)
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index ae6454c..e80b670 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -2368,40 +2368,37 @@ static int skd_unquiesce_dev(struct skd_device *skdev)
static irqreturn_t skd_reserved_isr(int irq, void *skd_host_data)
{
struct skd_device *skdev = skd_host_data;
- unsigned long flags;
- spin_lock_irqsave(&skdev->lock, flags);
+ spin_lock(&skdev->lock);
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x\n",
SKD_READL(skdev, FIT_INT_STATUS_HOST));
dev_err(&skdev->pdev->dev, "MSIX reserved irq %d = 0x%x\n", irq,
SKD_READL(skdev, FIT_INT_STATUS_HOST));
SKD_WRITEL(skdev, FIT_INT_RESERVED_MASK, FIT_INT_STATUS_HOST);
- spin_unlock_irqrestore(&skdev->lock, flags);
+ spin_unlock(&skdev->lock);
return IRQ_HANDLED;
}
static irqreturn_t skd_statec_isr(int irq, void *skd_host_data)
{
struct skd_device *skdev = skd_host_data;
- unsigned long flags;
- spin_lock_irqsave(&skdev->lock, flags);
+ spin_lock(&skdev->lock);
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x\n",
SKD_READL(skdev, FIT_INT_STATUS_HOST));
SKD_WRITEL(skdev, FIT_ISH_FW_STATE_CHANGE, FIT_INT_STATUS_HOST);
skd_isr_fwstate(skdev);
- spin_unlock_irqrestore(&skdev->lock, flags);
+ spin_unlock(&skdev->lock);
return IRQ_HANDLED;
}
static irqreturn_t skd_comp_q(int irq, void *skd_host_data)
{
struct skd_device *skdev = skd_host_data;
- unsigned long flags;
int flush_enqueued = 0;
int deferred;
- spin_lock_irqsave(&skdev->lock, flags);
+ spin_lock(&skdev->lock);
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x\n",
SKD_READL(skdev, FIT_INT_STATUS_HOST));
SKD_WRITEL(skdev, FIT_ISH_COMPLETION_POSTED, FIT_INT_STATUS_HOST);
@@ -2415,7 +2412,7 @@ static irqreturn_t skd_comp_q(int irq, void *skd_host_data)
else if (!flush_enqueued)
schedule_work(&skdev->start_queue);
- spin_unlock_irqrestore(&skdev->lock, flags);
+ spin_unlock(&skdev->lock);
return IRQ_HANDLED;
}
@@ -2423,27 +2420,25 @@ static irqreturn_t skd_comp_q(int irq, void *skd_host_data)
static irqreturn_t skd_msg_isr(int irq, void *skd_host_data)
{
struct skd_device *skdev = skd_host_data;
- unsigned long flags;
- spin_lock_irqsave(&skdev->lock, flags);
+ spin_lock(&skdev->lock);
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x\n",
SKD_READL(skdev, FIT_INT_STATUS_HOST));
SKD_WRITEL(skdev, FIT_ISH_MSG_FROM_DEV, FIT_INT_STATUS_HOST);
skd_isr_msg_from_dev(skdev);
- spin_unlock_irqrestore(&skdev->lock, flags);
+ spin_unlock(&skdev->lock);
return IRQ_HANDLED;
}
static irqreturn_t skd_qfull_isr(int irq, void *skd_host_data)
{
struct skd_device *skdev = skd_host_data;
- unsigned long flags;
- spin_lock_irqsave(&skdev->lock, flags);
+ spin_lock(&skdev->lock);
dev_dbg(&skdev->pdev->dev, "MSIX = 0x%x\n",
SKD_READL(skdev, FIT_INT_STATUS_HOST));
SKD_WRITEL(skdev, FIT_INT_QUEUE_FULL, FIT_INT_STATUS_HOST);
- spin_unlock_irqrestore(&skdev->lock, flags);
+ spin_unlock(&skdev->lock);
return IRQ_HANDLED;
}
--
2.7.4
next reply other threads:[~2020-10-21 1:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-21 1:16 Tian Tao [this message]
2020-10-27 4:09 ` [PATCH] skd: replace spin_lock_irqsave by spin_lock in hard IRQ Damien Le Moal
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