remoteproc: ingenic: Request IRQ disabled

The ingenic remoteproc driver requests its IRQ and then immediately
disables it.

The disable is necessary since irq_request() normally enables the IRQ. But
there is a new flag IRQF_NO_AUTOEN that when specified keeps the IRQ
disabled. Use this new flag rather than calling disable_irq().

This slightly reduce the boilerplate code and also avoids a theoretical
race condition where the IRQ could fire between irq_request() and
disable_irq().
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20211205111349.51213-1-lars@metafoo.deSigned-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

drivers/remoteproc/ingenic_rproc.c

@@ -218,14 +218,13 @@ static int ingenic_rproc_probe(struct platform_device *pdev)
 	if (vpu->irq < 0)
 		return vpu->irq;
 
-	ret = devm_request_irq(dev, vpu->irq, vpu_interrupt, 0, "VPU", rproc);
+	ret = devm_request_irq(dev, vpu->irq, vpu_interrupt, IRQF_NO_AUTOEN,
+			       "VPU", rproc);
 	if (ret < 0) {
 		dev_err(dev, "Failed to request IRQ\n");
 		return ret;
 	}
 
-	disable_irq(vpu->irq);
-
 	ret = devm_rproc_add(dev, rproc);
 	if (ret) {
 		dev_err(dev, "Failed to register remote processor\n");