irqchip/irq-sifive-plic: Check and continue in case of an invalid cpuid.
riscv_hartid_to_cpuid can return invalid cpuid for a hart that is present in DT but was never brought up. Print the appropriate warning message and continue. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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@ -237,6 +237,11 @@ static int __init plic_init(struct device_node *node,
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}
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}
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cpu = riscv_hartid_to_cpuid(hartid);
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cpu = riscv_hartid_to_cpuid(hartid);
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if (cpu < 0) {
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pr_warn("Invalid cpuid for context %d\n", i);
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continue;
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}
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handler = per_cpu_ptr(&plic_handlers, cpu);
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handler = per_cpu_ptr(&plic_handlers, cpu);
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handler->present = true;
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handler->present = true;
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handler->ctxid = i;
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handler->ctxid = i;
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