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Commit 7e11a0fb authored by Tilman Schmidt's avatar Tilman Schmidt Committed by Greg Kroah-Hartman
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tty: docs: serial/tty, add to ldisc methods 



A small addition to the ldisc method descriptions.

Signed-off-by: default avatarTilman Schmidt <tilman@imap.cc>
Signed-off-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent c934878c

Documentation/serial/tty.txt

+7 −2
Original line number Diff line number Diff line
@@ -42,7 +42,8 @@ TTY side interfaces: 
open()		-	Called when the line discipline is attached to

			the terminal. No other call into the line

			discipline for this tty will occur until it

			completes successfully. Can sleep.

			completes successfully. Returning an error will

			prevent the ldisc from being attached. Can sleep.



close()		-	This is called on a terminal when the line

			discipline is being unplugged. At the point of
@@ -52,7 +53,7 @@ close() - This is called on a terminal when the line 
hangup()	-	Called when the tty line is hung up.

			The line discipline should cease I/O to the tty.

			No further calls into the ldisc code will occur.

			Can sleep.

			The return value is ignored. Can sleep.



write()		-	A process is writing data through the line

			discipline.  Multiple write calls are serialized
@@ -83,6 +84,10 @@ ioctl() - Called when an ioctl is handed to the tty layer 
			that might be for the ldisc. Multiple ioctl calls

			may occur in parallel. May sleep. 



compat_ioctl()	-	Called when a 32 bit ioctl is handed to the tty layer

			that might be for the ldisc. Multiple ioctl calls

			may occur in parallel. May sleep.



Driver Side Interfaces:



receive_buf()	-	Hand buffers of bytes from the driver to the ldisc