forked from mirrors/linux
caab277b1d
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
41 lines
931 B
C
41 lines
931 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Chained IRQ handlers support.
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*
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* Copyright (C) 2011 ARM Ltd.
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*/
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#ifndef __IRQCHIP_CHAINED_IRQ_H
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#define __IRQCHIP_CHAINED_IRQ_H
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#include <linux/irq.h>
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/*
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* Entry/exit functions for chained handlers where the primary IRQ chip
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* may implement either fasteoi or level-trigger flow control.
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*/
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static inline void chained_irq_enter(struct irq_chip *chip,
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struct irq_desc *desc)
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{
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/* FastEOI controllers require no action on entry. */
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if (chip->irq_eoi)
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return;
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if (chip->irq_mask_ack) {
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chip->irq_mask_ack(&desc->irq_data);
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} else {
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chip->irq_mask(&desc->irq_data);
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if (chip->irq_ack)
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chip->irq_ack(&desc->irq_data);
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}
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}
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static inline void chained_irq_exit(struct irq_chip *chip,
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struct irq_desc *desc)
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{
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if (chip->irq_eoi)
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chip->irq_eoi(&desc->irq_data);
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else
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chip->irq_unmask(&desc->irq_data);
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}
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#endif /* __IRQCHIP_CHAINED_IRQ_H */
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