From fc03acaeab358c008a194b78daa10e78401376a8 Mon Sep 17 00:00:00 2001 From: Atish Patra Date: Tue, 12 Feb 2019 03:10:11 -0800 Subject: 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 Reviewed-by: Anup Patel Reviewed-by: Christoph Hellwig Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-sifive-plic.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/irqchip') diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c index 357e9daf94ae..254ecd76e8be 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -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; -- cgit v1.2.3-59-g8ed1b