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tty: rename tty_kopen() and add new function tty_kopen_shared()

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Introduce a new function tty_kopen_shared() that yields a struct
tty_struct. The semantic difference to tty_kopen() is that the tty is
expected to be used already. So rename tty_kopen() to
tty_kopen_exclusive() for clearness, adapt the single user and put the
common code in a new static helper function.

tty_kopen_shared is to be used to implement an LED trigger for tty
devices in one of the next patches.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20201218104246.591315-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König
2020-12-18 11:42:44 +01:00
committed by Greg Kroah-Hartman
parent 5c8fe583cc
commit 4ea3cd65e0
3 changed files with 42 additions and 21 deletions
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2
drivers/accessibility/speakup/spk_ttyio.c
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@ -152,7 +152,7 @@ static int spk_ttyio_initialise_ldisc(struct spk_synth *synth)
if (ret)
return ret;
tty = tty_kopen(dev);
tty = tty_kopen_exclusive(dev);
if (IS_ERR(tty))
return PTR_ERR(tty);