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>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 77ba0afbe4d..0a25a919186 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -101,7 +101,7 @@ hardware.
         Returns the current state of modem control inputs.  The state
         of the outputs should not be returned, since the core keeps
         track of their state.  The state information should include:
-                - TIOCM_DCD     state of DCD signal
+                - TIOCM_CAR     state of DCD signal
                 - TIOCM_CTS     state of CTS signal
                 - TIOCM_DSR     state of DSR signal
                 - TIOCM_RI      state of RI signal