[PATCH] i2c: Fix return value check

[Akinobu Mita <akinobu.mita@gmail.com>]

class_device_create() returns error code as pointer on failure.
This patch checks the return value of class_device_create() by using IS_ERR().

Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com>

 drivers/i2c/i2c-dev.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: 2.6-rc/drivers/i2c/i2c-dev.c
===================================================================
--- 2.6-rc.orig/drivers/i2c/i2c-dev.c
+++ 2.6-rc/drivers/i2c/i2c-dev.c
@@ -417,8 +417,8 @@ static int i2cdev_attach_adapter(struct 
 						 MKDEV(I2C_MAJOR, adap->nr),
 						 &adap->dev, "i2c-%d",
 						 adap->nr);
-	if (!i2c_dev->class_dev) {
-		res = -ENODEV;
+	if (IS_ERR(i2c_dev->class_dev)) {
+		res = PTR_ERR(i2c_dev->class_dev);
 		goto error;
 	}
 	res = class_device_create_file(i2c_dev->class_dev, &class_device_attr_name);
-
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