linux-kernel - [PATCH 5/7 RESEND] irqchip/loongson-pch-msi: Remove unneeded variable

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Message-Id: <1592903198-5505-6-git-send-email-yangtiezhu@loongson.cn>
Date:   Tue, 23 Jun 2020 17:06:36 +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 5/7 RESEND] irqchip/loongson-pch-msi: Remove unneeded variable

irq_domain_alloc_irqs_parent() returns 0 on success and non-zero value
on failure, it is redudant to check its non-zero return value and then
return it, so just remove the variable "ret" and return directly in the
function pch_msi_parent_domain_alloc().

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 drivers/irqchip/irq-loongson-pch-msi.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/irqchip/irq-loongson-pch-msi.c b/drivers/irqchip/irq-loongson-pch-msi.c
index 50becd2..12aeeab 100644
--- a/drivers/irqchip/irq-loongson-pch-msi.c
+++ b/drivers/irqchip/irq-loongson-pch-msi.c
@@ -100,17 +100,12 @@ static int pch_msi_parent_domain_alloc(struct irq_domain *domain,
 					unsigned int virq, int hwirq)
 {
 	struct irq_fwspec fwspec;
-	int ret;
 
 	fwspec.fwnode = domain->parent->fwnode;
 	fwspec.param_count = 1;
 	fwspec.param[0] = hwirq;
 
-	ret = irq_domain_alloc_irqs_parent(domain, virq, 1, &fwspec);
-	if (ret)
-		return ret;
-
-	return 0;
+	return irq_domain_alloc_irqs_parent(domain, virq, 1, &fwspec);
 }
 
 static int pch_msi_middle_domain_alloc(struct irq_domain *domain,
-- 
2.1.0