linux-kernel - [PATCH] [media] exynos4-is: fix error handling of irq_of_parse_and

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Message-ID: <20141114220950.GA34576@dtor-ws>
Date:	Fri, 14 Nov 2014 14:09:50 -0800
From:	Dmitry Torokhov <dtor@...omium.org>
To:	Mauro Carvalho Chehab <m.chehab@...sung.com>
Cc:	Kyungmin Park <kyungmin.park@...sung.com>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Wolfram Sang <wsa@...-dreams.de>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [media] exynos4-is: fix error handling of
 irq_of_parse_and_map

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>
---

Not tested, found by casual code inspection.

 drivers/media/platform/exynos4-is/fimc-is.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c
index 94c6b47..0fdca86 100644
--- a/drivers/media/platform/exynos4-is/fimc-is.c
+++ b/drivers/media/platform/exynos4-is/fimc-is.c
@@ -814,9 +814,9 @@ static int fimc_is_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	is->irq = irq_of_parse_and_map(dev->of_node, 0);
-	if (is->irq < 0) {
+	if (!is->irq) {
 		dev_err(dev, "no irq found\n");
-		return is->irq;
+		return -EINVAL;
 	}
 
 	ret = fimc_is_get_clocks(is);
-- 
2.1.0.rc2.206.gedb03e5


-- 
Dmitry
--
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