diff options
| author | Alan Cox <alan@redhat.com> | 2008-10-13 10:45:52 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 09:51:44 -0700 |
| commit | a90610e50b98e18385d4fbea2c9eaefb12c5a75c (patch) | |
| tree | 03fd450b5d94710105a6c6f4f3f20519fd815461 /drivers/s390/char/fs3270.c | |
| parent | 402fda9201ac619ea1f120996b1a142c57aeeb6b (diff) | |
fs3270: remove extra locks
get_current_tty now does internal locking and returns a referenced object,
thus our use of tty_mutex here can go away.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/s390/char/fs3270.c')
| -rw-r--r-- | drivers/s390/char/fs3270.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c index 84fbc90480dc..1227f4591f8d 100644 --- a/drivers/s390/char/fs3270.c +++ b/drivers/s390/char/fs3270.c @@ -426,18 +426,14 @@ fs3270_open(struct inode *inode, struct file *filp) minor = iminor(filp->f_path.dentry->d_inode); /* Check for minor 0 multiplexer. */ if (minor == 0) { - struct tty_struct *tty; - mutex_lock(&tty_mutex); - tty = get_current_tty(); + struct tty_struct *tty = get_current_tty(); if (!tty || tty->driver->major != IBM_TTY3270_MAJOR) { tty_kref_put(tty); - mutex_unlock(&tty_mutex); rc = -ENODEV; goto out; } minor = tty->index + RAW3270_FIRSTMINOR; tty_kref_put(tty); - mutex_unlock(&tty_mutex); } /* Check if some other program is already using fullscreen mode. */ fp = (struct fs3270 *) raw3270_find_view(&fs3270_fn, minor); |