diff options
Diffstat (limited to 'drivers/tty/n_tty.c')
| -rw-r--r-- | drivers/tty/n_tty.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 5e9ca4376d68..94fa981081fd 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -486,7 +486,8 @@ static int do_output_char(u8 c, struct tty_struct *tty, int space) static int process_output(u8 c, struct tty_struct *tty) { struct n_tty_data *ldata = tty->disc_data; - int space, retval; + unsigned int space; + int retval; mutex_lock(&ldata->output_lock); @@ -522,16 +523,16 @@ static ssize_t process_output_block(struct tty_struct *tty, const u8 *buf, unsigned int nr) { struct n_tty_data *ldata = tty->disc_data; - int space; - int i; + unsigned int space; + int i; const u8 *cp; mutex_lock(&ldata->output_lock); space = tty_write_room(tty); - if (space <= 0) { + if (space == 0) { mutex_unlock(&ldata->output_lock); - return space; + return 0; } if (nr > space) nr = space; @@ -696,7 +697,7 @@ static int n_tty_process_echo_ops(struct tty_struct *tty, size_t *tail, static size_t __process_echoes(struct tty_struct *tty) { struct n_tty_data *ldata = tty->disc_data; - int space, old_space; + unsigned int space, old_space; size_t tail; u8 c; |