From: Nitin Gupta <ngupta@vflare.org>
Date: Thu, 28 Jan 2010 15:49:59 +0000 (+0530)
Subject: Staging: ramzswap: Handle case for invalid backing swap
X-Git-Tag: v2.6.34-rc1~10^2~1^2~122
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c25d75a234df36446dc0d9bb3365ab8b83374d50;p=pandora-kernel.git

Staging: ramzswap: Handle case for invalid backing swap

Currently, we crash (issue BUG_ON) if backing swap
disk size is zero. This can happen is user specified
an extended partition or simply a bad disk as backing
swap. A crash is really an unpleasant surprise to user
for such trivial problems.

Now, we check for this condition and simply fail device
initialization if this is the case.

Additional cleanups:
 * use static for all functions
 * remove extra newline between functions
 * memset backing_swap_name to NULL on device reset

Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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