From 5eb5fc97d83ee1f8fcf3490bb81ad14a99fc544c Mon Sep 17 00:00:00 2001
From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Tue, 17 Oct 2006 15:25:59 +0900
Subject: [PATCH] [PATCH] cm4000_cs: fix return value check

The return value of class_create() need to be checked with IS_ERR().
And register_chrdev() returns errno on failure.
This patch includes these fixes for cm4000_cs and cm4040_cs.

Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com>
Signed-off-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
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