diff options
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index abc2708d4ac5..9771072da177 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -350,22 +350,19 @@ int tty_dev_name_to_number(const char *name, dev_t *number) return ret; prefix_length = str - name; - mutex_lock(&tty_mutex); + + guard(mutex)(&tty_mutex); list_for_each_entry(p, &tty_drivers, tty_drivers) if (prefix_length == strlen(p->name) && strncmp(name, p->name, prefix_length) == 0) { if (index < p->num) { *number = MKDEV(p->major, p->minor_start + index); - goto out; + return 0; } } - /* if here then driver wasn't found */ - ret = -ENODEV; -out: - mutex_unlock(&tty_mutex); - return ret; + return -ENODEV; } EXPORT_SYMBOL_GPL(tty_dev_name_to_number); @@ -462,7 +459,6 @@ static void tty_show_fdinfo(struct seq_file *m, struct file *file) } static const struct file_operations tty_fops = { - .llseek = no_llseek, .read_iter = tty_read, .write_iter = tty_write, .splice_read = copy_splice_read, @@ -477,7 +473,6 @@ static const struct file_operations tty_fops = { }; static const struct file_operations console_fops = { - .llseek = no_llseek, .read_iter = tty_read, .write_iter = redirected_tty_write, .splice_read = copy_splice_read, @@ -491,7 +486,6 @@ static const struct file_operations console_fops = { }; static const struct file_operations hung_up_tty_fops = { - .llseek = no_llseek, .read_iter = hung_up_tty_read, .write_iter = hung_up_tty_write, .poll = hung_up_tty_poll, |