[PATCH] Remove BUG_ON from n_tty_read()
From: Stanislav Kozina <hidden>
Date: 2012-08-10 10:51:41
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Change the BUG_ON to WARN_ON and return in case of tty->read_buf==NULL Signed-off-by: Stanislav Kozina <redacted> --- drivers/tty/n_tty.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index df21f39..39c6202 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c@@ -1728,7 +1728,10 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
do_it_again:
- BUG_ON(!tty->read_buf);
+ if (!tty->read_buf) {
+ WARN_ON(!tty->read_buf);
+ return -EAGAIN;
+ }
c = job_control(tty, file);
if (c < 0)
--
1.7.1