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

[ Upstream commit 394679f322649d06fea3c646ba65f5a0887f52c3 ]

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")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Patchwork: https://patchwork.freedesktop.org/patch/614075/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index cb538a262d1c1309f9435aeb02fefac595d7af1c..db36c81d0f12345396e334eec6e2a011795f5f3c 100644 (file)
--- 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;
 }