media: camss: move to use request_irq by IRQF_NO_AUTOEN flag

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 because of requesting.

this patch is made base on "add IRQF_NO_AUTOEN for request_irq" which
is being merged: https://lore.kernel.org/patchwork/patch/1388765/

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Author: Tian Tao

drivers/media/platform/qcom/camss/camss-csid.c

@@ -581,14 +581,13 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
 	snprintf(csid->irq_name, sizeof(csid->irq_name), "%s_%s%d",
 		 dev_name(dev), MSM_CSID_NAME, csid->id);
 	ret = devm_request_irq(dev, csid->irq, csid->ops->isr,
-			       IRQF_TRIGGER_RISING, csid->irq_name, csid);
+			       IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN,
+			       csid->irq_name, csid);
 	if (ret < 0) {
 		dev_err(dev, "request_irq failed: %d\n", ret);
 		return ret;
 	}
 
-	disable_irq(csid->irq);
-
 	/* Clocks */
 
 	csid->nclocks = 0;

drivers/media/platform/qcom/camss/camss-csiphy.c

@@ -617,14 +617,13 @@ int msm_csiphy_subdev_init(struct camss *camss,
 		 dev_name(dev), MSM_CSIPHY_NAME, csiphy->id);
 
 	ret = devm_request_irq(dev, csiphy->irq, csiphy->ops->isr,
-			       IRQF_TRIGGER_RISING, csiphy->irq_name, csiphy);
+			       IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN,
+			       csiphy->irq_name, csiphy);
 	if (ret < 0) {
 		dev_err(dev, "request_irq failed: %d\n", ret);
 		return ret;
 	}
 
-	disable_irq(csiphy->irq);
-
 	/* Clocks */
 
 	csiphy->nclocks = 0;