From: Tiezhu Yang yangtiezhu@loongson.cn
[ Upstream commit 66a535c495f72e1deacc37dfa34acca2a06e3578 ]
Check the return value of irq_domain_translate_twocell() due to it may returns -EINVAL if failed and use variable fwspec for it, and then use a new variable parent_fwspec which is proper for irq_domain_alloc_irqs_parent().
Fixes: ef8c01eb64ca ("irqchip: Add Loongson PCH PIC controller") Signed-off-by: Tiezhu Yang yangtiezhu@loongson.cn Signed-off-by: Marc Zyngier maz@kernel.org Link: https://lore.kernel.org/r/1594087972-21715-6-git-send-email-yangtiezhu@loong... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/irqchip/irq-loongson-pch-pic.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/irqchip/irq-loongson-pch-pic.c b/drivers/irqchip/irq-loongson-pch-pic.c index 2a05b9305012b..016f32c4cbe18 100644 --- a/drivers/irqchip/irq-loongson-pch-pic.c +++ b/drivers/irqchip/irq-loongson-pch-pic.c @@ -135,16 +135,19 @@ static int pch_pic_alloc(struct irq_domain *domain, unsigned int virq, int err; unsigned int type; unsigned long hwirq; - struct irq_fwspec fwspec; + struct irq_fwspec *fwspec = arg; + struct irq_fwspec parent_fwspec; struct pch_pic *priv = domain->host_data;
- irq_domain_translate_twocell(domain, arg, &hwirq, &type); + err = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type); + if (err) + return err;
- fwspec.fwnode = domain->parent->fwnode; - fwspec.param_count = 1; - fwspec.param[0] = hwirq + priv->ht_vec_base; + parent_fwspec.fwnode = domain->parent->fwnode; + parent_fwspec.param_count = 1; + parent_fwspec.param[0] = hwirq + priv->ht_vec_base;
- err = irq_domain_alloc_irqs_parent(domain, virq, 1, &fwspec); + err = irq_domain_alloc_irqs_parent(domain, virq, 1, &parent_fwspec); if (err) return err;