From c768968f134b9e7ab8a584ad19030a8d2c7eca2f Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Sun, 5 Dec 2021 12:13:49 +0100
Subject: [PATCH] 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.de
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
drivers/remoteproc/ingenic_rproc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/remoteproc/ingenic_rproc.c b/drivers/remoteproc/ingenic_rproc.c
index a356738160a41..9902cce28692c 100644
--- a/drivers/remoteproc/ingenic_rproc.c
+++ b/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");
--
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