From e9490e93c1978b6669f3e993caa3189be13ce459 Mon Sep 17 00:00:00 2001 From: Stanislav Kozina Date: Thu, 16 Aug 2012 12:01:47 +0100 Subject: Remove BUG_ON from n_tty_read() Change the BUG_ON to WARN_ON and return in case of tty->read_buf==NULL. We want to track a couple of long standing reports of this but at the same time we can avoid killing the box. Signed-off-by: Stanislav Kozina Signed-off-by: Alan Cox Cc: Horses Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/tty/n_tty.c') diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 6259242..8c0b7b4 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1742,7 +1742,8 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file, do_it_again: - BUG_ON(!tty->read_buf); + if (WARN_ON(!tty->read_buf)) + return -EAGAIN; c = job_control(tty, file); if (c < 0) -- cgit v1.1