forked from luck/tmp_suning_uos_patched
TTY: tty_io, annotate locking functions
tty_write_lock and tty_write_unlock contain imbalanced locking. But this is intentional, so mark them appropriately by __acquires/__releases. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -962,12 +962,14 @@ static ssize_t tty_read(struct file *file, char __user *buf, size_t count,
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}
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void tty_write_unlock(struct tty_struct *tty)
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__releases(&tty->atomic_write_lock)
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{
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mutex_unlock(&tty->atomic_write_lock);
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wake_up_interruptible_poll(&tty->write_wait, POLLOUT);
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}
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int tty_write_lock(struct tty_struct *tty, int ndelay)
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__acquires(&tty->atomic_write_lock)
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{
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if (!mutex_trylock(&tty->atomic_write_lock)) {
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if (ndelay)
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