tty: Move parts of tty_init_dev into new functions
Move the 'find-tty' and 'fast-track-open' parts of init_dev() to separate functions. Signed-off-by: NSukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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