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From: Tian Tao <tiantao6@hisilicon.com>
To: <robdclark@gmail.com>, <sean@poorly.run>, <airlied@linux.ie>,
	<daniel@ffwll.ch>
Cc: <linux-arm-msm@vger.kernel.org>, <dri-devel@lists.freedesktop.org>
Subject: [PATCH] drm/msm/dsi: replace spin_lock_irqsave by spin_lock in hard IRQ
Date: Sun, 7 Feb 2021 14:17:25 +0800	[thread overview]
Message-ID: <1612678645-60774-1-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/gpu/drm/msm/dsi/dsi_host.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index ab281cb..8ba204d 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1555,15 +1555,14 @@ static irqreturn_t dsi_host_irq(int irq, void *ptr)
 {
 	struct msm_dsi_host *msm_host = ptr;
 	u32 isr;
-	unsigned long flags;
 
 	if (!msm_host->ctrl_base)
 		return IRQ_HANDLED;
 
-	spin_lock_irqsave(&msm_host->intr_lock, flags);
+	spin_lock(&msm_host->intr_lock);
 	isr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
 	dsi_write(msm_host, REG_DSI_INTR_CTRL, isr);
-	spin_unlock_irqrestore(&msm_host->intr_lock, flags);
+	spin_unlock(&msm_host->intr_lock);
 
 	DBG("isr=0x%x, id=%d", isr, msm_host->id);
 
-- 
2.7.4


WARNING: multiple messages have this Message-ID (diff)
From: Tian Tao <tiantao6@hisilicon.com>
To: <robdclark@gmail.com>, <sean@poorly.run>, <airlied@linux.ie>,
	<daniel@ffwll.ch>
Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH] drm/msm/dsi: replace spin_lock_irqsave by spin_lock in hard IRQ
Date: Sun, 7 Feb 2021 14:17:25 +0800	[thread overview]
Message-ID: <1612678645-60774-1-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/gpu/drm/msm/dsi/dsi_host.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index ab281cb..8ba204d 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1555,15 +1555,14 @@ static irqreturn_t dsi_host_irq(int irq, void *ptr)
 {
 	struct msm_dsi_host *msm_host = ptr;
 	u32 isr;
-	unsigned long flags;
 
 	if (!msm_host->ctrl_base)
 		return IRQ_HANDLED;
 
-	spin_lock_irqsave(&msm_host->intr_lock, flags);
+	spin_lock(&msm_host->intr_lock);
 	isr = dsi_read(msm_host, REG_DSI_INTR_CTRL);
 	dsi_write(msm_host, REG_DSI_INTR_CTRL, isr);
-	spin_unlock_irqrestore(&msm_host->intr_lock, flags);
+	spin_unlock(&msm_host->intr_lock);
 
 	DBG("isr=0x%x, id=%d", isr, msm_host->id);
 
-- 
2.7.4

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dri-devel@lists.freedesktop.org
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             reply	other threads:[~2021-02-07  6:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-07  6:17 Tian Tao [this message]
2021-02-07  6:17 ` [PATCH] drm/msm/dsi: replace spin_lock_irqsave by spin_lock in hard IRQ Tian Tao
  -- strict thread matches above, loose matches on Subject: below --
2020-12-04  1:23 [PATCH drm/hisilicon 0/3] support reading resolutions from EDID Tian Tao
2020-12-04  1:23 ` [PATCH] drm/msm/dsi: Replace spin_lock_irqsave by spin_lock in hard IRQ Tian Tao
2020-12-04  1:23   ` Tian Tao
2020-09-30  2:51 Tian Tao
2020-09-30  2:51 ` Tian Tao

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