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path: root/drivers/char/ttyprintk.c
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Diffstat (limited to 'drivers/char/ttyprintk.c')
-rw-r--r--drivers/char/ttyprintk.c33
1 files changed, 13 insertions, 20 deletions
diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c
index 46b77ede84c0..af98f6d6509b 100644
--- a/drivers/char/ttyprintk.c
+++ b/drivers/char/ttyprintk.c
@@ -67,7 +67,7 @@ static int tpk_printk(const unsigned char *buf, int count)
tmp[tpk_curr + 1] = '\0';
printk(KERN_INFO "%s%s", tpk_tag, tmp);
tpk_curr = 0;
- if (buf[i + 1] == '\n')
+ if ((i + 1) < count && buf[i + 1] == '\n')
i++;
break;
case '\n':
@@ -178,11 +178,17 @@ static struct tty_driver *ttyprintk_driver;
static int __init ttyprintk_init(void)
{
int ret = -ENOMEM;
- void *rp;
- ttyprintk_driver = alloc_tty_driver(1);
- if (!ttyprintk_driver)
- return ret;
+ tty_port_init(&tpk_port.port);
+ tpk_port.port.ops = &null_ops;
+ mutex_init(&tpk_port.port_write_mutex);
+
+ ttyprintk_driver = tty_alloc_driver(1,
+ TTY_DRIVER_RESET_TERMIOS |
+ TTY_DRIVER_REAL_RAW |
+ TTY_DRIVER_UNNUMBERED_NODE);
+ if (IS_ERR(ttyprintk_driver))
+ return PTR_ERR(ttyprintk_driver);
ttyprintk_driver->driver_name = "ttyprintk";
ttyprintk_driver->name = "ttyprintk";
@@ -191,9 +197,8 @@ static int __init ttyprintk_init(void)
ttyprintk_driver->type = TTY_DRIVER_TYPE_CONSOLE;
ttyprintk_driver->init_termios = tty_std_termios;
ttyprintk_driver->init_termios.c_oflag = OPOST | OCRNL | ONOCR | ONLRET;
- ttyprintk_driver->flags = TTY_DRIVER_RESET_TERMIOS |
- TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty_set_operations(ttyprintk_driver, &ttyprintk_ops);
+ tty_port_link_device(&tpk_port.port, ttyprintk_driver, 0);
ret = tty_register_driver(ttyprintk_driver);
if (ret < 0) {
@@ -201,22 +206,10 @@ static int __init ttyprintk_init(void)
goto error;
}
- /* create our unnumbered device */
- rp = device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 3), NULL,
- ttyprintk_driver->name);
- if (IS_ERR(rp)) {
- printk(KERN_ERR "Couldn't create ttyprintk device\n");
- ret = PTR_ERR(rp);
- goto error;
- }
-
- tty_port_init(&tpk_port.port);
- tpk_port.port.ops = &null_ops;
- mutex_init(&tpk_port.port_write_mutex);
-
return 0;
error:
+ tty_unregister_driver(ttyprintk_driver);
put_tty_driver(ttyprintk_driver);
ttyprintk_driver = NULL;
return ret;