[PATCH] dm table split_args: handle no input
Return sense if dm_split_args is called with a NULL input parameter. Signed-off-by: NDavid Teigland <teigland@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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