linux-kernel - [PATCH V2 02/22] irqchip: brcmstb-l2: fix error handling of irq_of_parse_and

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Message-Id: <1416097066-20452-3-git-send-email-cernekee@gmail.com>
Date:	Sat, 15 Nov 2014 16:17:26 -0800
From:	Kevin Cernekee <cernekee@...il.com>
To:	ralf@...ux-mips.org
Cc:	f.fainelli@...il.com, jfraser@...adcom.com, dtor@...omium.org,
	tglx@...utronix.de, jason@...edaemon.net,
	linux-mips@...ux-mips.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH V2 02/22] irqchip: brcmstb-l2: fix error handling of irq_of_parse_and_map

From: Dmitry Torokhov <dtor@...omium.org>

Return value of irq_of_parse_and_map() is unsigned int, with 0
indicating failure, so testing for negative result never works.

Signed-off-by: Dmitry Torokhov <dtor@...omium.org>
Acked-by: Florian Fainelli <f.fainelli@...il.com>
Tested-by: Kevin Cernekee <cernekee@...il.com>
---
 drivers/irqchip/irq-brcmstb-l2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-brcmstb-l2.c b/drivers/irqchip/irq-brcmstb-l2.c
index 4aa653a..313c2c6 100644
--- a/drivers/irqchip/irq-brcmstb-l2.c
+++ b/drivers/irqchip/irq-brcmstb-l2.c
@@ -139,9 +139,9 @@ int __init brcmstb_l2_intc_of_init(struct device_node *np,
 	writel(0xffffffff, data->base + CPU_CLEAR);
 
 	data->parent_irq = irq_of_parse_and_map(np, 0);
-	if (data->parent_irq < 0) {
+	if (!data->parent_irq) {
 		pr_err("failed to find parent interrupt\n");
-		ret = data->parent_irq;
+		ret = -EINVAL;
 		goto out_unmap;
 	}
 
-- 
2.1.1

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