Commit cc63b1e1 authored by Jan Beulich's avatar Jan Beulich Committed by Linus Torvalds

[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: default avatarJan Beulich <jbeulich@novell.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 43fde784
...@@ -2867,6 +2867,10 @@ void unblank_screen(void) ...@@ -2867,6 +2867,10 @@ void unblank_screen(void)
*/ */
static void blank_screen_t(unsigned long dummy) static void blank_screen_t(unsigned long dummy)
{ {
if (unlikely(!keventd_up())) {
mod_timer(&console_timer, jiffies + blankinterval);
return;
}
blank_timer_expired = 1; blank_timer_expired = 1;
schedule_work(&console_work); schedule_work(&console_work);
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment