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39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
From c93b0344d24ba63e0e4caeb693a9fcb7320aae3a Mon Sep 17 00:00:00 2001
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From: Giedrius <giedrius@blokas.io>
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Date: Wed, 27 Feb 2019 14:27:28 +0000
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Subject: [PATCH] Fix for Pisound kernel module in Real Time kernel
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configuration.
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When handler of data_available interrupt is fired, queue_work ends up
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getting called and it can block on a spin lock which is not allowed in
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interrupt context. The fix was to run the handler from a thread context
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instead.
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---
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sound/soc/bcm/pisound.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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--- a/sound/soc/bcm/pisound.c
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+++ b/sound/soc/bcm/pisound.c
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@@ -1,6 +1,6 @@
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/*
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* Pisound Linux kernel module.
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- * Copyright (C) 2016-2017 Vilniaus Blokas UAB, https://blokas.io/pisound
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+ * Copyright (C) 2016-2019 Vilniaus Blokas UAB, https://blokas.io/pisound
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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@@ -532,10 +532,10 @@ static void pisnd_spi_gpio_uninit(void)
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static int pisnd_spi_gpio_irq_init(struct device *dev)
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{
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- return request_irq(
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- gpiod_to_irq(data_available),
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+ return request_threaded_irq(
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+ gpiod_to_irq(data_available), NULL,
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data_available_interrupt_handler,
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- IRQF_TIMER | IRQF_TRIGGER_RISING,
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+ IRQF_TIMER | IRQF_TRIGGER_RISING | IRQF_ONESHOT,
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"data_available_int",
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NULL
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);
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