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authorJiri Slaby <jslaby@suse.cz>2021-05-05 11:19:23 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-05-13 18:29:11 +0200
commit4fb266e1976ed664252d172c4889c639abd53930 (patch)
tree5c08eb7590b3d0c91821bb7b1f093be81d200330
parent3d18354248b14a5ffefaa31a43fd0d45a283e97d (diff)
tty: remove empty tty_operations::flush_buffer
tty_operations::flush_buffer is optional. If it doesn't exist, nothing is called. So remove almost¹ empty flush_buffer implementations. ¹ capi had an useless pr_debug in it. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Link: https://lore.kernel.org/r/20210505091928.22010-31-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/isdn/capi/capi.c6
-rw-r--r--drivers/s390/char/tty3270.c6
2 files changed, 0 insertions, 12 deletions
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index dae80197ad9c..6d99b93bb09e 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1249,11 +1249,6 @@ static int capinc_tty_break_ctl(struct tty_struct *tty, int state)
return 0;
}
-static void capinc_tty_flush_buffer(struct tty_struct *tty)
-{
- pr_debug("capinc_tty_flush_buffer\n");
-}
-
static void capinc_tty_set_ldisc(struct tty_struct *tty)
{
pr_debug("capinc_tty_set_ldisc\n");
@@ -1279,7 +1274,6 @@ static const struct tty_operations capinc_ops = {
.start = capinc_tty_start,
.hangup = capinc_tty_hangup,
.break_ctl = capinc_tty_break_ctl,
- .flush_buffer = capinc_tty_flush_buffer,
.set_ldisc = capinc_tty_set_ldisc,
.send_xchar = capinc_tty_send_xchar,
.install = capinc_tty_install,
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index ba1fbce63fee..adc33846bf8e 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -1756,11 +1756,6 @@ tty3270_flush_chars(struct tty_struct *tty)
}
}
-static void
-tty3270_flush_buffer(struct tty_struct *tty)
-{
-}
-
/*
* Check for visible/invisible input switches
*/
@@ -1881,7 +1876,6 @@ static const struct tty_operations tty3270_ops = {
.put_char = tty3270_put_char,
.flush_chars = tty3270_flush_chars,
.write_room = tty3270_write_room,
- .flush_buffer = tty3270_flush_buffer,
.throttle = tty3270_throttle,
.unthrottle = tty3270_unthrottle,
.hangup = tty3270_hangup,