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Message-Id: <1260574122-10676-22-git-send-email-gregkh@suse.de> Date: Fri, 11 Dec 2009 15:28:06 -0800 From: Greg Kroah-Hartman <gregkh@...e.de> To: linux-kernel@...r.kernel.org Cc: Tilman Schmidt <tilman@...p.cc>, Randy Dunlap <randy.dunlap@...cle.com>, Greg Kroah-Hartman <gregkh@...e.de> Subject: [PATCH 22/58] tty: docs: serial/tty, add to ldisc methods From: Tilman Schmidt <tilman@...p.cc> A small addition to the ldisc method descriptions. Signed-off-by: Tilman Schmidt <tilman@...p.cc> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com> Acked-by: Alan Cox <alan@...ux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- Documentation/serial/tty.txt | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/Documentation/serial/tty.txt b/Documentation/serial/tty.txt index 8e65c44..5e5349a 100644 --- a/Documentation/serial/tty.txt +++ b/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 -- 1.6.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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