linux-kernel - [PATCH 2/7] V4L/DVB mx1_camera: don't check platform_get

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Message-Id: <1260979809-24811-2-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Wed, 16 Dec 2009 17:10:04 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	David Vrabel <dvrabel@...om.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Antonio Ospite <ospite@...denti.unina.it>,
	Paulius Zaleckas <paulius.zaleckas@...tonika.lt>,
	linux-media@...r.kernel.org
Subject: [PATCH 2/7] V4L/DVB mx1_camera: don't check platform_get_irq's return value against zero

platform_get_irq returns -ENXIO on failure, so !irq was probably
always true.  Better use (int)irq <= 0.  Note that a return value of
zero is still handled as error even though this could mean irq0.

This is a followup to 305b3228f9ff4d59f49e6d34a7034d44ee8ce2f0 that
changed the return value of platform_get_irq from 0 to -ENXIO on error.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: David Vrabel <dvrabel@...om.com>
Cc: Greg Kroah-Hartman <gregkh@...e.de>
Cc: Mauro Carvalho Chehab <mchehab@...radead.org>
Cc: Guennadi Liakhovetski <g.liakhovetski@....de>
Cc: Antonio Ospite <ospite@...denti.unina.it>
Cc: Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
Cc: linux-media@...r.kernel.org
---
 drivers/media/video/mx1_camera.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/video/mx1_camera.c b/drivers/media/video/mx1_camera.c
index 7280229..f7a472f 100644
--- a/drivers/media/video/mx1_camera.c
+++ b/drivers/media/video/mx1_camera.c
@@ -650,7 +650,7 @@ static int __init mx1_camera_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_irq(pdev, 0);
-	if (!res || !irq) {
+	if (!res || (int)irq <= 0) {
 		err = -ENODEV;
 		goto exit;
 	}
-- 
1.6.5.2

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