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authorJiri Slaby <jslaby@suse.cz>2012-06-04 13:35:27 +0200
committerRichard Weinberger <richard@nod.at>2012-07-28 17:47:58 +0200
commit6fc58845ad189f8ceebd68a2ff524bfcd689a75e (patch)
tree7acc1ed13ec6427bf80f9ef3bf6eb4be0119663d /arch/um/drivers/chan_kern.c
parent060ed31dd9ede0726f8c88aff36c6cd8ec6d0fe8 (diff)
TTY: um/line, use tty from tty_port
This means switching to the tty refcounted model so that we will not race with interrupts. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/drivers/chan_kern.c')
-rw-r--r--arch/um/drivers/chan_kern.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 45e248c2f43c..87eebfe03c61 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -150,9 +150,11 @@ void chan_enable_winch(struct chan *chan, struct tty_struct *tty)
static void line_timer_cb(struct work_struct *work)
{
struct line *line = container_of(work, struct line, task.work);
+ struct tty_struct *tty = tty_port_tty_get(&line->port);
if (!line->throttled)
- chan_interrupt(line, line->tty, line->driver->read_irq);
+ chan_interrupt(line, tty, line->driver->read_irq);
+ tty_kref_put(tty);
}
int enable_chan(struct line *line)