drm/imx/dcss: Use IRQF_NO_AUTOEN flag in request_irq()

[ 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@huawei.com>
Reviewed-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240912083020.3720233-2-ruanjinjie@huawei.com
[DB: fixed the subject]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/imx/dcss/dcss-crtc.c b/drivers/gpu/drm/imx/dcss/dcss-crtc.c
index 31267c00782fc1535fa70b108df262b5c325b375..af91e45b5d13b72cf2609d101abdc7e34d848bc8 100644 (file)
--- 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;
 }