diff options
| author | Atish Patra <atish.patra@wdc.com> | 2019-02-12 03:10:11 -0800 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2019-02-14 12:24:34 +0000 |
| commit | fc03acaeab358c008a194b78daa10e78401376a8 (patch) | |
| tree | 4bb054bda7e8fc7cdfc53d7fbf39999149bfcfd7 /drivers/irqchip/irq-sifive-plic.c | |
| parent | 518bfe84ec417318b2470652cdb27978ddfeaa59 (diff) | |
| download | linux-next-fc03acaeab358c008a194b78daa10e78401376a8.tar.gz | |
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>
Diffstat (limited to 'drivers/irqchip/irq-sifive-plic.c')
| -rw-r--r-- | drivers/irqchip/irq-sifive-plic.c | 5 |
1 files changed, 5 insertions, 0 deletions
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; |