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ARM: ep93xx: Replace setup_irq() by request_irq()

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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

Link: https://lore.kernel.org/r/20200327124143.3520-1-afzal.mohd.ma@gmail.com
Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
afzal mohammed 2020-03-27 18:11:43 +05:30 committed by Arnd Bergmann
parent d163dcc2be
commit 2164f34965
1 changed files with 6 additions and 8 deletions
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14
arch/arm/mach-ep93xx/timer-ep93xx.c
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@ -117,15 +117,11 @@ static irqreturn_t ep93xx_timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static struct irqaction ep93xx_timer_irq = {
.name = "ep93xx timer",
.flags = IRQF_TIMER | IRQF_IRQPOLL,
.handler = ep93xx_timer_interrupt,
.dev_id = &ep93xx_clockevent,
};
void __init ep93xx_timer_init(void)
{
int irq = IRQ_EP93XX_TIMER3;
unsigned long flags = IRQF_TIMER | IRQF_IRQPOLL;
/* Enable and register clocksource and sched_clock on timer 4 */
writel(EP93XX_TIMER4_VALUE_HIGH_ENABLE,
EP93XX_TIMER4_VALUE_HIGH);
@ -136,7 +132,9 @@ void __init ep93xx_timer_init(void)
EP93XX_TIMER4_RATE);
/* Set up clockevent on timer 3 */
setup_irq(IRQ_EP93XX_TIMER3, &ep93xx_timer_irq);
if (request_irq(irq, ep93xx_timer_interrupt, flags, "ep93xx timer",
&ep93xx_clockevent))
pr_err("Failed to request irq %d (ep93xx timer)\n", irq);
clockevents_config_and_register(&ep93xx_clockevent,
EP93XX_TIMER123_RATE,
1,