linux-kernel - [PATCH v2 5/5] drm/msm/adreno: Use IRQF_NO_AUTOEN flag in request

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Message-ID: <20240912083020.3720233-6-ruanjinjie@huawei.com>
Date: Thu, 12 Sep 2024 16:30:20 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <laurentiu.palcu@....nxp.com>, <l.stach@...gutronix.de>,
	<maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
	<tzimmermann@...e.de>, <airlied@...il.com>, <daniel@...ll.ch>,
	<shawnguo@...nel.org>, <s.hauer@...gutronix.de>, <kernel@...gutronix.de>,
	<festevam@...il.com>, <p.zabel@...gutronix.de>, <robdclark@...il.com>,
	<sean@...rly.run>, <konradybcio@...nel.org>, <quic_abhinavk@...cinc.com>,
	<dmitry.baryshkov@...aro.org>, <marijn.suijten@...ainline.org>,
	<thierry.reding@...il.com>, <mperttunen@...dia.com>, <jonathanh@...dia.com>,
	<agx@...xcpu.org>, <gregkh@...uxfoundation.org>, <jordan@...micpenguin.net>,
	<dri-devel@...ts.freedesktop.org>, <imx@...ts.linux.dev>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-msm@...r.kernel.org>, <freedreno@...ts.freedesktop.org>,
	<linux-tegra@...r.kernel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH v2 5/5] drm/msm/adreno: Use IRQF_NO_AUTOEN flag in request_irq()

disable_irq() after request_irq() still has a time gap in which
interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will
disable IRQ auto-enable when request IRQ.

Fixes: 4b565ca5a2cb ("drm/msm: Add A6XX device support")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
v2:
- Add Reviewed-by.
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index cb538a262d1c..db36c81d0f12 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -1505,15 +1505,13 @@ static int a6xx_gmu_get_irq(struct a6xx_gmu *gmu, struct platform_device *pdev,
 
 	irq = platform_get_irq_byname(pdev, name);
 
-	ret = request_irq(irq, handler, IRQF_TRIGGER_HIGH, name, gmu);
+	ret = request_irq(irq, handler, IRQF_TRIGGER_HIGH | IRQF_NO_AUTOEN, name, gmu);
 	if (ret) {
 		DRM_DEV_ERROR(&pdev->dev, "Unable to get interrupt %s %d\n",
 			      name, ret);
 		return ret;
 	}
 
-	disable_irq(irq);
-
 	return irq;
 }
 
-- 
2.34.1