linux-kernel - [PATCH 09/15] staging: comedi: 8255: check for failure of subdev_8255

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Message-ID: <201206131542.28503.hartleys@visionengravers.com>
Date:	Wed, 13 Jun 2012 15:42:28 -0700
From:	H Hartley Sweeten <hartleys@...ionengravers.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
CC:	<devel@...verdev.osuosl.org>, <abbotti@....co.uk>,
	<fmhess@...rs.sourceforge.net>, <gregkh@...uxfoundation.org>
Subject: [PATCH 09/15] staging: comedi: 8255: check for failure of subdev_8255_init

The initialization of the 8255 subdevice can fail. Make sure to
check for it.

Signed-off-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc: Ian Abbott <abbotti@....co.uk>
Cc: Frank Mori Hess <fmhess@...rs.sourceforge.net>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/staging/comedi/drivers/8255.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/8255.c b/drivers/staging/comedi/drivers/8255.c
index da86a04..4cdd007 100644
--- a/drivers/staging/comedi/drivers/8255.c
+++ b/drivers/staging/comedi/drivers/8255.c
@@ -342,7 +342,7 @@ int subdev_8255_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
 	int ret;
 
 	ret = subdev_8255_init(dev, s, io, iobase);
-	if (ret < 0)
+	if (ret)
 		return ret;
 
 	s->do_cmdtest	= subdev_8255_cmdtest;
@@ -399,7 +399,9 @@ static int dev_8255_attach(struct comedi_device *dev,
 
 			s->type = COMEDI_SUBD_UNUSED;
 		} else {
-			subdev_8255_init(dev, s, NULL, iobase);
+			ret = subdev_8255_init(dev, s, NULL, iobase);
+			if (ret)
+				return ret;
 			dev_info(dev->class_dev, "0x%04lx\n", iobase);
 		}
 	}
-- 
1.7.7

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