diff mbox series

[1/5] drm/atomic: Use IRQF_NO_AUTOEN flag in request_irq()

Message ID 20240906082325.2677621-2-ruanjinjie@huawei.com
State Handled Elsewhere
Headers show
Series drm: Use IRQF_NO_AUTOEN flag in request_irq() | expand

Commit Message

Jinjie Ruan Sept. 6, 2024, 8:23 a.m. UTC 
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>
---
 drivers/gpu/drm/imx/dcss/dcss-crtc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Comments

Dmitry Baryshkov Sept. 6, 2024, 9:57 a.m. UTC | #1 
On Fri, Sep 06, 2024 at 04:23:21PM GMT, Jinjie Ruan wrote:
> 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>
> ---
>  drivers/gpu/drm/imx/dcss/dcss-crtc.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)

Commit subject is incorrect, otherwise LGTM
diff mbox series

Patch

diff --git a/drivers/gpu/drm/imx/dcss/dcss-crtc.c b/drivers/gpu/drm/imx/dcss/dcss-crtc.c
index 31267c00782f..af91e45b5d13 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;
 }