linux-kernel - [PATCH] extcon: max77693: fix handling return value of regmap_irq_get

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Date:	Mon, 14 Dec 2015 12:12:42 +0100
From:	Andrzej Hajda <a.hajda@...sung.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Andrzej Hajda <a.hajda@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] extcon: max77693: fix handling return value of
 regmap_irq_get_virq

The function can return negative values, so its result should
be assigned to signed variable.

Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
Suggested-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
---
 drivers/extcon/extcon-max77693.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index 44c499e..fdf8f5d 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -1127,11 +1127,11 @@ static int max77693_muic_probe(struct platform_device *pdev)
 	/* Support irq domain for MAX77693 MUIC device */
 	for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
 		struct max77693_muic_irq *muic_irq = &muic_irqs[i];
-		unsigned int virq = 0;
+		int virq;
 
 		virq = regmap_irq_get_virq(max77693->irq_data_muic,
 					muic_irq->irq);
-		if (!virq)
+		if (virq <= 0)
 			return -EINVAL;
 		muic_irq->virq = virq;
 
-- 
1.9.1

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