linux-kernel - [PATCH 3/4] tty: Document required behavior of tty driver close()

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Message-Id: <1359567832-25318-4-git-send-email-peter@hurleysoftware.com>
Date:	Wed, 30 Jan 2013 12:43:51 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Ilya Zykov <ilya@...x.ru>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Alan Cox <alan@...ux.intel.com>, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>,
	Peter Hurley <peter@...leysoftware.com>
Subject: [PATCH 3/4] tty: Document required behavior of tty driver close()

If the tty driver open() fails, the tty driver close() is still
called during the resultant tty release.

Signed-off-by: Peter Hurley <peter@...leysoftware.com>
---
 include/linux/tty_driver.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index dd976cf..756a609 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -40,6 +40,7 @@
  * void (*close)(struct tty_struct * tty, struct file * filp);
  *
  * 	This routine is called when a particular tty device is closed.
+ *	Note: called even if the corresponding open() failed.
  *
  *	Required method.
  *
-- 
1.8.1.1

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