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Oliver Hartkopp authored
TTY layer expects 0 if the ldisc->open operation succeeded. Reported-by:
Matvejchikov Ilya <matvejchikov@gmail.com> Signed-off-by:
Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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