serial/documentation: fix documented name of DCD cpp symbol
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Alan Cox <alan@linux.intel.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -101,7 +101,7 @@ hardware.
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Returns the current state of modem control inputs. The state
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of the outputs should not be returned, since the core keeps
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track of their state. The state information should include:
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- TIOCM_DCD state of DCD signal
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- TIOCM_CAR state of DCD signal
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- TIOCM_CTS state of CTS signal
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- TIOCM_DSR state of DSR signal
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- TIOCM_RI state of RI signal
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