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MIPS: 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().

remove_irq() has been replaced by free_irq() as well.

There were build error's during previous version, couple of which was
reported by kbuild test robot <lkp@intel.com> of which one was reported
by Thomas Bogendoerfer <tsbogend@alpha.franken.de> as well. There were a
few more issues including build errors, those also have 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: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
afzal mohammed
2020-03-05 17:27:53 +05:30
committed by Thomas Bogendoerfer
parent 792a402c28
commit ac8fd122e0
42 changed files with 240 additions and 413 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
arch/mips/kernel/smp.c
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@@ -207,25 +207,13 @@ static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static struct irqaction irq_resched = {
.handler = ipi_resched_interrupt,
.flags = IRQF_PERCPU,
.name = "IPI resched"
};
static struct irqaction irq_call = {
.handler = ipi_call_interrupt,
.flags = IRQF_PERCPU,
.name = "IPI call"
};
static void smp_ipi_init_one(unsigned int virq,
struct irqaction *action)
static void smp_ipi_init_one(unsigned int virq, const char *name,
irq_handler_t handler)
{
int ret;
irq_set_handler(virq, handle_percpu_irq);
ret = setup_irq(virq, action);
ret = request_irq(virq, handler, IRQF_PERCPU, name, NULL);
BUG_ON(ret);
}
@@ -278,12 +266,15 @@ int mips_smp_ipi_allocate(const struct cpumask *mask)
int cpu;
for_each_cpu(cpu, mask) {
smp_ipi_init_one(call_virq + cpu, &irq_call);
smp_ipi_init_one(sched_virq + cpu, &irq_resched);
smp_ipi_init_one(call_virq + cpu, "IPI call",
ipi_call_interrupt);
smp_ipi_init_one(sched_virq + cpu, "IPI resched",
ipi_resched_interrupt);
}
} else {
smp_ipi_init_one(call_virq, &irq_call);
smp_ipi_init_one(sched_virq, &irq_resched);
smp_ipi_init_one(call_virq, "IPI call", ipi_call_interrupt);
smp_ipi_init_one(sched_virq, "IPI resched",
ipi_resched_interrupt);
}
return 0;
@@ -311,8 +302,8 @@ int mips_smp_ipi_free(const struct cpumask *mask)
int cpu;
for_each_cpu(cpu, mask) {
remove_irq(call_virq + cpu, &irq_call);
remove_irq(sched_virq + cpu, &irq_resched);
free_irq(call_virq + cpu, NULL);
free_irq(sched_virq + cpu, NULL);
}
}
irq_destroy_ipi(call_virq, mask);