[PATCH v2 3/5] drm/imx/ipuv3: Use IRQF_NO_AUTOEN flag in request_irq()

[Jinjie Ruan]

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: 47b1be5c0f4e ("staging: imx/drm: request irq only after adding the crtc")
Reviewed-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
Signed-off-by: Jinjie Ruan <ruanjin...@huawei.com>
---
v2:
- Add Reviewed-by.
---
 drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c 
b/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c
index ef29c9a61a46..99db53e167bd 100644
--- a/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c
@@ -410,14 +410,12 @@ static int ipu_drm_bind(struct device *dev, struct device 
*master, void *data)
        }
 
        ipu_crtc->irq = ipu_plane_irq(ipu_crtc->plane[0]);
-       ret = devm_request_irq(ipu_crtc->dev, ipu_crtc->irq, ipu_irq_handler, 0,
-                       "imx_drm", ipu_crtc);
+       ret = devm_request_irq(ipu_crtc->dev, ipu_crtc->irq, ipu_irq_handler,
+                              IRQF_NO_AUTOEN, "imx_drm", ipu_crtc);
        if (ret < 0) {
                dev_err(ipu_crtc->dev, "irq request failed with %d.\n", ret);
                return ret;
        }
-       /* Only enable IRQ when we actually need it to trigger work. */
-       disable_irq(ipu_crtc->irq);
 
        return 0;
 }
-- 
2.34.1