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cx20442: tty_ldisc_ops::write_wakeup is optional

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TTY layer does nothing if tty_ldisc_ops::write_wakeup is NULL, so there
is no need to implement an empty one in cx20442. Drop it.

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: alsa-devel@alsa-project.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210722115141.516-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2021-07-22 13:51:40 +02:00 committed by Greg Kroah-Hartman
parent 3d1fa055ea
commit 0e9ffdb236
1 changed files with 0 additions and 6 deletions
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6
sound/soc/codecs/cx20442.c
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@ -279,11 +279,6 @@ static void v253_receive(struct tty_struct *tty, const unsigned char *cp,
}
}
/* Line discipline .write_wakeup() */
static void v253_wakeup(struct tty_struct *tty)
{
}
struct tty_ldisc_ops v253_ops = {
.name = "cx20442",
.owner = THIS_MODULE,
@ -291,7 +286,6 @@ struct tty_ldisc_ops v253_ops = {
.close = v253_close,
.hangup = v253_hangup,
.receive_buf = v253_receive,
.write_wakeup = v253_wakeup,
};
EXPORT_SYMBOL_GPL(v253_ops);