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Date: Tue, 23 Jun 2020 17:06:35 +0800 From: Tiezhu Yang <yangtiezhu@...ngson.cn> To: Thomas Gleixner <tglx@...utronix.de>, Jason Cooper <jason@...edaemon.net>, Marc Zyngier <maz@...nel.org>, Rob Herring <robh+dt@...nel.org> Cc: Huacai Chen <chenhc@...ote.com>, Jiaxun Yang <jiaxun.yang@...goat.com>, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, linux-mips@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn> Subject: [PATCH 4/7 RESEND] irqchip/loongson-pch-pic: Check return value of irq_domain_translate_twocell() 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(). Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn> --- 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 2a05b93..016f32c 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; -- 2.1.0
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