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TTY: um/line, use tty from tty_port

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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>
This commit is contained in:
Jiri Slaby
2012-06-04 13:35:27 +02:00
committed by Richard Weinberger
parent 060ed31dd9
commit 6fc58845ad
3 changed files with 21 additions and 9 deletions
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4
arch/um/drivers/chan_kern.c
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@@ -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)