cc2550b421
request_irq() is preferred over setup_irq(). The early boot setup_irq() invocations happen either via 'init_IRQ()' or 'time_init()', while memory allocators are ready by 'mm_init()'. Per tglx[1], setup_irq() existed in olden days when allocators were not ready by the time early interrupts were initialized. Hence replace setup_irq() by request_irq(). Seldom remove_irq() usage has been observed coupled with setup_irq(), wherever that has been found, it too has been replaced by free_irq(). A build error that was reported by kbuild test robot <lkp@intel.com> in the previous version of the patch also has been fixed. [1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/91961c77c1cf93d41523f5e1ac52043f32f97077.1582799709.git.afzal.mohd.ma@gmail.com
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* (C) Copyright 2009 Intel Corporation
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* Author: Jacob Pan (jacob.jun.pan@intel.com)
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*
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* Shared with ARM platforms, Jamie Iles, Picochip 2011
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*
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* Support for the Synopsys DesignWare APB Timers.
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*/
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#ifndef __DW_APB_TIMER_H__
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#define __DW_APB_TIMER_H__
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#include <linux/clockchips.h>
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#include <linux/clocksource.h>
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#include <linux/interrupt.h>
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#define APBTMRS_REG_SIZE 0x14
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struct dw_apb_timer {
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void __iomem *base;
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unsigned long freq;
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int irq;
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};
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struct dw_apb_clock_event_device {
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struct clock_event_device ced;
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struct dw_apb_timer timer;
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void (*eoi)(struct dw_apb_timer *);
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};
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struct dw_apb_clocksource {
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struct dw_apb_timer timer;
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struct clocksource cs;
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};
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void dw_apb_clockevent_register(struct dw_apb_clock_event_device *dw_ced);
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void dw_apb_clockevent_pause(struct dw_apb_clock_event_device *dw_ced);
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void dw_apb_clockevent_resume(struct dw_apb_clock_event_device *dw_ced);
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void dw_apb_clockevent_stop(struct dw_apb_clock_event_device *dw_ced);
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struct dw_apb_clock_event_device *
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dw_apb_clockevent_init(int cpu, const char *name, unsigned rating,
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void __iomem *base, int irq, unsigned long freq);
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struct dw_apb_clocksource *
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dw_apb_clocksource_init(unsigned rating, const char *name, void __iomem *base,
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unsigned long freq);
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void dw_apb_clocksource_register(struct dw_apb_clocksource *dw_cs);
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void dw_apb_clocksource_start(struct dw_apb_clocksource *dw_cs);
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u64 dw_apb_clocksource_read(struct dw_apb_clocksource *dw_cs);
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#endif /* __DW_APB_TIMER_H__ */
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