media: ipu3-cio2: Request IRQ earlier

Call devm_request_irq() before registering the async notifier, as otherwise
it would be possible to use the device before the interrupts could be
delivered to the driver.

Fixes: c2a6a07afe4a ("media: intel-ipu3: cio2: add new MIPI-CSI2 driver")
Signed-off-by: Sakari Ailus <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/pci/intel/ipu3/ipu3-cio2.c

···
 
 	v4l2_async_nf_init(&cio2->notifier, &cio2->v4l2_dev);
 
-	/* Register notifier for subdevices we care */
-	r = cio2_parse_firmware(cio2);
-	if (r)
-		goto fail_clean_notifier;
-
 	r = devm_request_irq(dev, pci_dev->irq, cio2_irq, IRQF_SHARED,
 			     CIO2_NAME, cio2);
 	if (r) {
 		dev_err(dev, "failed to request IRQ (%d)\n", r);
 		goto fail_clean_notifier;
 	}
+
+	/* Register notifier for subdevices we care */
+	r = cio2_parse_firmware(cio2);
+	if (r)
+		goto fail_clean_notifier;
 
 	pm_runtime_put_noidle(dev);
 	pm_runtime_allow(dev);