linux-kernel - [PATCH V3 04/11] irqchip: bcm7120-l2: fix error handling of irq_of_parse_and

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Date:	Sun, 23 Nov 2014 18:40:39 -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, jogo@...nwrt.org,
	arnd@...db.de, computersforpeace@...il.com,
	linux-mips@...ux-mips.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH V3 04/11] irqchip: bcm7120-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-bcm7120-l2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-bcm7120-l2.c b/drivers/irqchip/irq-bcm7120-l2.c
index e7c6155b23b8..8eec8e1201d9 100644
--- a/drivers/irqchip/irq-bcm7120-l2.c
+++ b/drivers/irqchip/irq-bcm7120-l2.c
@@ -102,9 +102,9 @@ static int bcm7120_l2_intc_init_one(struct device_node *dn,
 	unsigned int idx;
 
 	parent_irq = irq_of_parse_and_map(dn, irq);
-	if (parent_irq < 0) {
+	if (!parent_irq) {
 		pr_err("failed to map interrupt %d\n", irq);
-		return parent_irq;
+		return -EINVAL;
 	}
 
 	/* For multiple parent IRQs with multiple words, this looks like:
-- 
2.1.1

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