From 8d6eb7794759718d49fa902859b9c484a4fdf583 Mon Sep 17 00:00:00 2001 From: Tilman Schmidt Date: Wed, 4 Nov 2009 16:04:52 -0800 Subject: [PATCH] --- yaml --- r: 175329 b: refs/heads/master c: 7e11a0fb3b7ab83871b7a56c7a67c603283ec4b9 h: refs/heads/master i: 175327: bbb20165e8852aaf8c549cb0b0f8e32cf8506548 v: v3 --- [refs] | 2 +- trunk/Documentation/serial/tty.txt | 9 +++++++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/[refs] b/[refs] index 3e2636bb9f93..3295fe57db70 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: c934878cc09fdd4a06ffa554c5149b11d972456f +refs/heads/master: 7e11a0fb3b7ab83871b7a56c7a67c603283ec4b9 diff --git a/trunk/Documentation/serial/tty.txt b/trunk/Documentation/serial/tty.txt index 8e65c4498c52..5e5349a4fcd2 100644 --- a/trunk/Documentation/serial/tty.txt +++ b/trunk/Documentation/serial/tty.txt @@ -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