[PATCH] uml: fix previous console locking
Eliminate the open_mutex after complaints from Blaisorblade. It turns out that the tty count provides the information needed to tell whether we are the first opener or last closer. Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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