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authorJiri Slaby <jslaby@suse.cz>2012-06-04 13:35:26 +0200
committerRichard Weinberger <richard@nod.at>2012-07-28 17:47:58 +0200
commit060ed31dd9ede0726f8c88aff36c6cd8ec6d0fe8 (patch)
tree8707cad6d39fc374b7a3983eda6e94a444a9afff /arch/um
parent28a33cbc24e4256c143dce96c7d93bf423229f92 (diff)
downloadlinux-linaro-stable-060ed31dd9ede0726f8c88aff36c6cd8ec6d0fe8.tar.gz
TTY: um/line, add tty_port
And use count from there. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/drivers/line.c7
-rw-r--r--arch/um/drivers/line.h2
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;