On Tue, Sep 16, 2014 at 12:33:33PM +0900, Daeseok Youn wrote:
> @@ -2297,12 +2273,12 @@ static void dgap_tty_close(struct tty_struct *tty, struct file *file)
> * Go to sleep to ensure RTS/DTR
> * have been dropped for modems to see it.
> */
> - if (ch->ch_close_delay) {
> - spin_unlock_irqrestore(&ch->ch_lock,
> - lock_flags);
> - dgap_ms_sleep(ch->ch_close_delay);
> - spin_lock_irqsave(&ch->ch_lock, lock_flags);
> - }
> + spin_unlock_irqrestore(&ch->ch_lock,
> + lock_flags);
> + /* .25 second delay for dropping RTS/DTR */
> + schedule_timeout_interruptible(msecs_to_jiffies(250));
> + signal_pending(current);
There is no point in calling signal_pending() if you don't care about
the return value.
> + spin_lock_irqsave(&ch->ch_lock, lock_flags);
> }
>
regards,
dan carpenter
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