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request_irq() is preferred over setup_irq(). Invocations of setup_irq() occur after memory allocators are ready. 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(). [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: Russell King <rmk+kernel@armlinux.org.uk>
36 lines
855 B
C
36 lines
855 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/arm/mach-footbridge/isa-timer.c
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*
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* Copyright (C) 1998 Russell King.
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* Copyright (C) 1998 Phil Blundell
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*/
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#include <linux/clockchips.h>
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#include <linux/i8253.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/spinlock.h>
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#include <linux/timex.h>
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#include <asm/irq.h>
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#include <asm/mach/time.h>
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#include "common.h"
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static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
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{
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struct clock_event_device *ce = dev_id;
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ce->event_handler(ce);
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return IRQ_HANDLED;
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}
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void __init isa_timer_init(void)
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{
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clocksource_i8253_init();
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if (request_irq(i8253_clockevent.irq, pit_timer_interrupt,
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IRQF_TIMER | IRQF_IRQPOLL, "pit", &i8253_clockevent))
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pr_err("Failed to request irq %d(pit)\n", i8253_clockevent.irq);
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clockevent_i8253_init(false);
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}
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