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parisc: 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

Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
afzal mohammed 2020-03-04 06:20:24 +05:30 committed by Helge Deller
parent c48b07226b
commit 997ba65736
2 changed files with 8 additions and 22 deletions
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22
arch/parisc/kernel/irq.c
View file

@ -560,33 +560,23 @@ void do_cpu_irq_mask(struct pt_regs *regs)
goto out;
}
static struct irqaction timer_action = {
.handler = timer_interrupt,
.name = "timer",
.flags = IRQF_TIMER | IRQF_PERCPU | IRQF_IRQPOLL,
};
#ifdef CONFIG_SMP
static struct irqaction ipi_action = {
.handler = ipi_interrupt,
.name = "IPI",
.flags = IRQF_PERCPU,
};
#endif
static void claim_cpu_irqs(void)
{
unsigned long flags = IRQF_TIMER | IRQF_PERCPU | IRQF_IRQPOLL;
int i;
for (i = CPU_IRQ_BASE; i <= CPU_IRQ_MAX; i++) {
irq_set_chip_and_handler(i, &cpu_interrupt_type,
handle_percpu_irq);
}
irq_set_handler(TIMER_IRQ, handle_percpu_irq);
setup_irq(TIMER_IRQ, &timer_action);
if (request_irq(TIMER_IRQ, timer_interrupt, flags, "timer", NULL))
pr_err("Failed to register timer interrupt\n");
#ifdef CONFIG_SMP
irq_set_handler(IPI_IRQ, handle_percpu_irq);
setup_irq(IPI_IRQ, &ipi_action);
if (request_irq(IPI_IRQ, ipi_interrupt, IRQF_PERCPU, "IPI", NULL))
pr_err("Failed to register IPI interrupt\n");
#endif
}

8
drivers/parisc/eisa.c
View file

@ -243,11 +243,6 @@ static irqreturn_t dummy_irq2_handler(int _, void *dev)
return IRQ_HANDLED;
}
static struct irqaction irq2_action = {
.handler = dummy_irq2_handler,
.name = "cascade",
};
static void init_eisa_pic(void)
{
unsigned long flags;
@ -335,7 +330,8 @@ static int __init eisa_probe(struct parisc_device *dev)
}
/* Reserve IRQ2 */
setup_irq(2, &irq2_action);
if (request_irq(2, dummy_irq2_handler, 0, "cascade", NULL))
pr_err("Failed to request irq 2 (cascade)\n");
for (i = 0; i < 16; i++) {
irq_set_chip_and_handler(i, &eisa_interrupt_type,
handle_simple_irq);