Commit cc63b1e1 authored Jun 17, 2005 by Jan Beulich Committed by Linus Torvalds Jun 18, 2005

[PATCH] console blanking oops fix



When significant delays happen during boot (e.g.  with a kernel debugger,
but the problem has also seen in other cases) the timeout for blanking the
console may trigger, but the work scheduler may not have been initialized,
yet.  schedule_work() will oops over the null keventd_wq.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 43fde784

drivers/char/vt.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -2867,6 +2867,10 @@ void unblank_screen(void)
		*/
		static void blank_screen_t(unsigned long dummy)
		{
		if (unlikely(!keventd_up())) {
		mod_timer(&console_timer, jiffies + blankinterval);
		return;
		}
		blank_timer_expired = 1;
		schedule_work(&console_work);
		}