The tty core calls the tty driver's open, close and hangup
methods holding the tty lock.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* This routine is mandatory; if this routine is not filled in,
* the attempted open will fail with ENODEV.
*
* This routine is mandatory; if this routine is not filled in,
* the attempted open will fail with ENODEV.
*
+ * Required method. Called with tty lock held.
+ *
* 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.
*
* 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. Called with tty lock held.
*
* void (*shutdown)(struct tty_struct * tty);
*
*
* void (*shutdown)(struct tty_struct * tty);
*
+ * Called with tty lock held.
+ *
* int (*break_ctl)(struct tty_struct *tty, int state);
*
* This optional routine requests the tty driver to turn on or
* int (*break_ctl)(struct tty_struct *tty, int state);
*
* This optional routine requests the tty driver to turn on or