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irqchip: 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: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200304004839.4729-1-afzal.mohd.ma@gmail.com
This commit is contained in:
afzal mohammed 2020-03-04 06:18:38 +05:30 committed by Marc Zyngier
parent bc714c8bd4
commit 2ef1cb763d
2 changed files with 9 additions and 16 deletions
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16
drivers/irqchip/irq-i8259.c
View File

@ -268,15 +268,6 @@ static void init_8259A(int auto_eoi)
raw_spin_unlock_irqrestore(&i8259A_lock, flags);
}
/*
* IRQ2 is cascade interrupt to second interrupt controller
*/
static struct irqaction irq2 = {
.handler = no_action,
.name = "cascade",
.flags = IRQF_NO_THREAD,
};
static struct resource pic1_io_resource = {
.name = "pic1",
.start = PIC_MASTER_CMD,
@ -311,6 +302,10 @@ static const struct irq_domain_ops i8259A_ops = {
*/
struct irq_domain * __init __init_i8259_irqs(struct device_node *node)
{
/*
* PIC_CASCADE_IR is cascade interrupt to second interrupt controller
*/
int irq = I8259A_IRQ_BASE + PIC_CASCADE_IR;
struct irq_domain *domain;
insert_resource(&ioport_resource, &pic1_io_resource);
@ -323,7 +318,8 @@ struct irq_domain * __init __init_i8259_irqs(struct device_node *node)
if (!domain)
panic("Failed to add i8259 IRQ domain");
setup_irq(I8259A_IRQ_BASE + PIC_CASCADE_IR, &irq2);
if (request_irq(irq, no_action, IRQF_NO_THREAD, "cascade", NULL))
pr_err("Failed to register cascade interrupt\n");
register_syscore_ops(&i8259_syscore_ops);
return domain;
}

9
drivers/irqchip/irq-ingenic.c
View File

@ -58,11 +58,6 @@ static irqreturn_t intc_cascade(int irq, void *data)
return IRQ_HANDLED;
}
static struct irqaction intc_cascade_action = {
.handler = intc_cascade,
.name = "SoC intc cascade interrupt",
};
static int __init ingenic_intc_of_init(struct device_node *node,
unsigned num_chips)
{
@ -130,7 +125,9 @@ static int __init ingenic_intc_of_init(struct device_node *node,
irq_reg_writel(gc, IRQ_MSK(32), JZ_REG_INTC_SET_MASK);
}
setup_irq(parent_irq, &intc_cascade_action);
if (request_irq(parent_irq, intc_cascade, 0,
"SoC intc cascade interrupt", NULL))
pr_err("Failed to register SoC intc cascade interrupt\n");
return 0;
out_domain_remove: