From: Andrzej Hajda <a.hajda@samsung.com>
To: MyungJoo Ham <myungjoo.ham@samsung.com>,
        Chanwoo Choi <cw00.choi@samsung.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        linux-kernel@vger.kernel.org
Subject: [PATCH] extcon: max77843: fix handling return value of
 regmap_irq_get_virq
Date: Mon, 14 Dec 2015 11:06:03 +0100
Message-id: <1450087564-28441-6-git-send-email-a.hajda@samsung.com>
In-reply-to: <1450087564-28441-1-git-send-email-a.hajda@samsung.com>
References: <1450087564-28441-1-git-send-email-a.hajda@samsung.com>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1192
Lines: 34

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

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 drivers/extcon/extcon-max77843.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/extcon/extcon-max77843.c b/drivers/extcon/extcon-max77843.c
index 9f9ea33..74dfb7f 100644
--- a/drivers/extcon/extcon-max77843.c
+++ b/drivers/extcon/extcon-max77843.c
@@ -811,7 +811,7 @@ static int max77843_muic_probe(struct platform_device *pdev)
 
 	for (i = 0; i < ARRAY_SIZE(max77843_muic_irqs); i++) {
 		struct max77843_muic_irq *muic_irq = &max77843_muic_irqs[i];
-		unsigned int virq = 0;
+		int virq = 0;
 
 		virq = regmap_irq_get_virq(max77843->irq_data_muic,
 				muic_irq->irq);
-- 
1.9.1

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