Am 21.11.2013 20:12, schrieb Andreas Platschek:
> Use tty_write_lock()/tty_write_unlock() consistently.
>
> This takes care of the following sparse warning:
> drivers/tty/tty_io.c:1169:17: warning: context imbalance in 'tty_write_message' - unexpected unlock
>
> Signed-off-by: Andreas Platschek <andi.platschek@xxxxxxxxx>
> ---
> drivers/tty/tty_io.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
> index 3a1a01a..13dca92 100644
> --- a/drivers/tty/tty_io.c
> +++ b/drivers/tty/tty_io.c
> @@ -1165,7 +1165,7 @@ out:
> void tty_write_message(struct tty_struct *tty, char *msg)
> {
> if (tty) {
> - mutex_lock(&tty->atomic_write_lock);
> + tty_write_lock(tty,0);
> tty_lock(tty);
> if (tty->ops->write && !test_bit(TTY_CLOSING, &tty->flags)) {
> tty_unlock(tty);
i am not an expert on this but you may need to replace that tty_unlock() with tty_write_unlock().
re,
wh
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