mxser: remove unnesesary NULL check
mxser_transmit_chars(tty, port) is called only from mxser_interrupt(). NULL check is performed in mxser_interrupt() so it is redundant here. Signed-off-by: NKulikov Vasiliy <segooon@gmail.com> Acked-by: NJiri Slaby <jirislaby@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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