genericserial: remove bogus optimisation check and dead code paths
We've been using the 'new locking' for a long time now so it seems pointless keeping the old one around. Remove it and undo the macros it uses back into real code for readability. Remove the bogus 'no termios change' checks. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Morten Helgesen <morten@sourcepoet.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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