[PATCH 5.15 152/565] drm/imx/dcss: Use IRQF_NO_AUTOEN flag in request_irq()

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>

[ Upstream commit 1af01e14db7e0b45ae502d822776a58c86688763 ]

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")
Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@xxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240912083020.3720233-2-ruanjinjie@xxxxxxxxxx
[DB: fixed the subject]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/imx/dcss/dcss-crtc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/imx/dcss/dcss-crtc.c b/drivers/gpu/drm/imx/dcss/dcss-crtc.c
index 31267c00782fc..af91e45b5d13b 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-crtc.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-crtc.c
@@ -206,15 +206,13 @@ int dcss_crtc_init(struct dcss_crtc *crtc, struct drm_device *drm)
 	if (crtc->irq < 0)
 		return crtc->irq;
 
-	ret = request_irq(crtc->irq, dcss_crtc_irq_handler,
-			  0, "dcss_drm", crtc);
+	ret = request_irq(crtc->irq, dcss_crtc_irq_handler, IRQF_NO_AUTOEN,
+			  "dcss_drm", crtc);
 	if (ret) {
 		dev_err(dcss->dev, "irq request failed with %d.\n", ret);
 		return ret;
 	}
 
-	disable_irq(crtc->irq);
-
 	return 0;
 }
 
-- 
2.43.0







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