Re: better Documentation for TIOCM_CTS handling

[Matthieu CASTET <matthieu.castet@parrot.com>]

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Hi,

can we add in the documentation that if the driver want to manage CTS or
DCD, it should be able to report the change with uart_handle_xx_change
function ?

Something like the attached patch.


Thanks


Matthieu

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diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 77ba0af..8395d5a 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -109,6 +109,10 @@ hardware.
 	the port does not support CTS, DCD or DSR, the driver should
 	indicate that the signal is permanently active.  If RI is
 	not available, the signal should not be indicated as active.
+	If the port does not support automatic detection of change of
+	CTS or DCD (and report via uart_handle_cts_change or 
+	uart_handle_dcd_change) the driver should indicate that the
+	signal is permanently active.
 
 	Locking: port->lock taken.
 	Interrupts: locally disabled.