linux-kernel - [PATCH v2 2/5] drm/imx/dcss: Use IRQF_NO_AUTOEN flag in request

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Message-ID: <20240912083020.3720233-3-ruanjinjie@huawei.com>
Date: Thu, 12 Sep 2024 16:30:17 +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 2/5] drm/imx/dcss: 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: 9021c317b770 ("drm/imx: Add initial support for DCSS on iMX8MQ")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
v2:
- Add Reviewed-by.
---
 drivers/gpu/drm/imx/dcss/dcss-dtg.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/imx/dcss/dcss-dtg.c b/drivers/gpu/drm/imx/dcss/dcss-dtg.c
index 2968f5d5bd41..6bbfd9aa27ac 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-dtg.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-dtg.c
@@ -134,14 +134,12 @@ static int dcss_dtg_irq_config(struct dcss_dtg *dtg,
 		    dtg->base_reg + DCSS_DTG_INT_MASK);
 
 	ret = request_irq(dtg->ctxld_kick_irq, dcss_dtg_irq_handler,
-			  0, "dcss_ctxld_kick", dtg);
+			  IRQF_NO_AUTOEN, "dcss_ctxld_kick", dtg);
 	if (ret) {
 		dev_err(dtg->dev, "dtg: irq request failed.\n");
 		return ret;
 	}
 
-	disable_irq(dtg->ctxld_kick_irq);
-
 	dtg->ctxld_kick_irq_en = false;
 
 	return 0;
-- 
2.34.1