From 060ed31dd9ede0726f8c88aff36c6cd8ec6d0fe8 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Mon, 4 Jun 2012 13:35:26 +0200 Subject: [PATCH] TTY: um/line, add tty_port And use count from there. Signed-off-by: Jiri Slaby Cc: Jeff Dike Cc: Richard Weinberger Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: Richard Weinberger --- arch/um/drivers/line.c | 7 ++++--- arch/um/drivers/line.h | 2 +- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index acfd0e0fd0c9..482a7bd4a64c 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -404,7 +404,7 @@ int line_open(struct line *lines, struct tty_struct *tty) goto out_unlock; err = 0; - if (line->count++) + if (line->port.count++) goto out_unlock; BUG_ON(tty->driver_data); @@ -446,7 +446,7 @@ void line_close(struct tty_struct *tty, struct file * filp) mutex_lock(&line->count_lock); BUG_ON(!line->valid); - if (--line->count) + if (--line->port.count) goto out_unlock; line->tty = NULL; @@ -478,7 +478,7 @@ int setup_one_line(struct line *lines, int n, char *init, mutex_lock(&line->count_lock); - if (line->count) { + if (line->port.count) { *error_out = "Device is already open"; goto out; } @@ -663,6 +663,7 @@ int register_lines(struct line_driver *line_driver, driver->init_termios = tty_std_termios; for (i = 0; i < nlines; i++) { + tty_port_init(&lines[i].port); spin_lock_init(&lines[i].lock); mutex_init(&lines[i].count_lock); lines[i].driver = line_driver; diff --git a/arch/um/drivers/line.h b/arch/um/drivers/line.h index 0a1834719dba..0e06a1f441d7 100644 --- a/arch/um/drivers/line.h +++ b/arch/um/drivers/line.h @@ -32,9 +32,9 @@ struct line_driver { }; struct line { + struct tty_port port; struct tty_struct *tty; struct mutex count_lock; - unsigned long count; int valid; char *init_str; -- 2.20.1