diff mbox series

[5/5] drm/msm/adreno: Use IRQF_NO_AUTOEN flag in request_irq()

Message ID 20240906082325.2677621-6-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: 4b565ca5a2cb ("drm/msm: Add A6XX device support")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
---
 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Comments

Dmitry Baryshkov Sept. 6, 2024, 9:55 a.m. UTC | #1 
On Fri, Sep 06, 2024 at 04:23:25PM 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: 4b565ca5a2cb ("drm/msm: Add A6XX device support")
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
diff mbox series

Patch

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;
 }