cyclades: use dtr_rts helpers
For Z cards, use tty helpers for dtr_rts. If we did the same for Y cards, it will cause a deadlock, because cyy_dtr_rts takes a lock which we already hold. Instead, we introduce a Y helper expecting card lock to be held. It may then be called with set/clear masks from other places. Signed-off-by:Jiri Slaby <jirislaby@gmail.com> Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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