Commit fc03acae authored Feb 12, 2019 by Atish Patra Committed by Marc Zyngier Feb 14, 2019

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>

parent 518bfe84

drivers/irqchip/irq-sifive-plic.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -237,6 +237,11 @@ static int __init plic_init(struct device_node *node,
		}

		cpu = riscv_hartid_to_cpuid(hartid);
		if (cpu < 0) {
		pr_warn("Invalid cpuid for context %d\n", i);
		continue;
		}

		handler = per_cpu_ptr(&plic_handlers, cpu);
		handler->present = true;
		handler->ctxid = i;

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