diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2016-01-10 20:36:12 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-05-01 00:05:45 +0200 |
| commit | c4bef7cb34421392b046995b7afa7b458fd66f22 (patch) | |
| tree | ff79c8e8172e88393f53809e1809a2bd3335f936 /include | |
| parent | db9ac0f31c5234cea4f5eb8f1d80cebcd3192b56 (diff) | |
tty: Fix GPF in flush_to_ldisc(), part 2
commit f33798deecbd59a2955f40ac0ae2bc7dff54c069 upstream.
commit 9ce119f318ba ("tty: Fix GPF in flush_to_ldisc()") fixed a
GPF caused by a line discipline which does not define a receive_buf()
method.
However, the vt driver (and speakup driver also) pushes selection
data directly to the line discipline receive_buf() method via
tty_ldisc_receive_buf(). Fix the same problem in tty_ldisc_receive_buf().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tty.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index 1c3316a47d7e..1d02392fa3bd 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -569,7 +569,7 @@ static inline int tty_ldisc_receive_buf(struct tty_ldisc *ld, unsigned char *p, count = ld->ops->receive_buf2(ld->tty, p, f, count); else { count = min_t(int, count, ld->tty->receive_room); - if (count) + if (count && ld->ops->receive_buf) ld->ops->receive_buf(ld->tty, p, f, count); } return count; |