lguest: fix timer interrupt setup

Without an IRQ chip set, we now get a WARN_ON and no timer interrupt.  This
prevents booting.

Fortunately, the fix is a one-liner: set up the timer IRQ like everything
else.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org # .39.x

diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index e191c09..db832fd 100644 (file)
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -993,6 +993,7 @@ static void lguest_time_irq(unsigned int irq, struct irq_desc *desc)
 static void lguest_time_init(void)
 {
        /* Set up the timer interrupt (0) to go to our simple timer routine */
+       lguest_setup_irq(0);
        irq_set_handler(0, lguest_time_irq);
 
        clocksource_register_hz(&lguest_clock, NSEC_PER_SEC);