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n_tty: Inline check_unthrottle() at lone call site 

2-line function check_unthrottle() is now only called from
n_tty_read(); merge into caller.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2013-03-06 08:20:51 -05:00 committed by Greg Kroah-Hartman
parent afa80ccb4c
commit c828f679ee
1 changed files with 2 additions and 16 deletions
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18
drivers/tty/n_tty.c
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@ -188,21 +188,6 @@ static void put_tty_queue(unsigned char c, struct n_tty_data *ldata)
raw_spin_unlock_irqrestore(&ldata->read_lock, flags);
}
/**
* check_unthrottle - allow new receive data
* @tty; tty device
*
* Check whether to call the driver unthrottle functions
*
* Can sleep, may be called under the atomic_read_lock mutex but
* this is not guaranteed.
*/
static void check_unthrottle(struct tty_struct *tty)
{
if (tty->count)
tty_unthrottle(tty);
}
/**
* reset_buffer_flags - reset buffer state
* @tty: terminal to reset
@ -1961,7 +1946,8 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
*/
if (n_tty_chars_in_buffer(tty) <= TTY_THRESHOLD_UNTHROTTLE) {
n_tty_set_room(tty);
check_unthrottle(tty);
if (tty->count)
tty_unthrottle(tty);
}
if (b - buf >= minimum)