Messages in this thread Patch in this message | | | From | Peter Hurley <> | Subject | [PATCH 5/9] tty: Fix GPF in flush_to_ldisc(), part 2 | Date | Sun, 10 Jan 2016 14:43:05 -0800 |
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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().
Cc: <stable@vger.kernel.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> --- include/linux/tty.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/tty.h b/include/linux/tty.h index dea7d54..03e4015 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -579,7 +579,7 @@ 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; -- 2.7.0
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