diff options
Diffstat (limited to 'drivers/char/tty_io.c')
| -rw-r--r-- | drivers/char/tty_io.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index e881e9ed08de..36098ee8fe65 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -1376,19 +1376,6 @@ struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx, struct tty_struct *tty; int retval; - /* check whether we're reopening an existing tty */ - tty = tty_driver_lookup_tty(driver, idx); - - if (IS_ERR(tty)) - return tty; - - if (tty) { - retval = tty_reopen(tty); - if (retval) - return ERR_PTR(retval); - return tty; - } - /* Check if pty master is being opened multiple times */ if (driver->subtype == PTY_TYPE_MASTER && (driver->flags & TTY_DRIVER_DEVPTS_MEM) && !first_ok) @@ -1790,7 +1777,7 @@ void tty_release_dev(struct file *filp) static int __tty_open(struct inode *inode, struct file *filp) { - struct tty_struct *tty; + struct tty_struct *tty = NULL; int noctty, retval; struct tty_driver *driver; int index; @@ -1847,7 +1834,21 @@ retry_open: return -ENODEV; } got_driver: - tty = tty_init_dev(driver, index, 0); + if (!tty) { + /* check whether we're reopening an existing tty */ + tty = tty_driver_lookup_tty(driver, index); + + if (IS_ERR(tty)) + return PTR_ERR(tty); + } + + if (tty) { + retval = tty_reopen(tty); + if (retval) + tty = ERR_PTR(retval); + } else + tty = tty_init_dev(driver, index, 0); + mutex_unlock(&tty_mutex); tty_driver_kref_put(driver); if (IS_ERR(tty)) |