Char: n_r3964, use wait_event_interruptible
Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1071,8 +1071,6 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
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struct r3964_client_info *pClient;
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struct r3964_message *pMsg;
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struct r3964_client_message theMsg;
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DECLARE_WAITQUEUE(wait, current);
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int count;
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TRACE_L("read()");
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@ -1086,16 +1084,8 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
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return -EAGAIN;
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}
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/* block until there is a message: */
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add_wait_queue(&pInfo->read_wait, &wait);
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repeat:
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__set_current_state(TASK_INTERRUPTIBLE);
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pMsg = remove_msg(pInfo, pClient);
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if (!pMsg && !signal_pending(current)) {
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schedule();
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goto repeat;
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}
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__set_current_state(TASK_RUNNING);
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remove_wait_queue(&pInfo->read_wait, &wait);
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wait_event_interruptible(pInfo->read_wait,
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(pMsg = remove_msg(pInfo, pClient)));
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}
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/* If we still haven't got a message, we must have been signalled */
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