drivers/clocksource/tcb_clksrc.c: fix init sequence

setup_irq() was called before clockevents_register_device() which is
needed by the irq handler.  Bug was reproducible by restarting the
kernel using kexec (reliable crash).

Signed-off-by: Nikolaus Voss <n.voss@weinmann.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
index 01b886e6882215f526dab803ebb66531919df544..79c47e88d5d1ed17059aa99c9370168af7530d12 100644 (file)
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@@ -196,9 +196,9 @@ static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
        clkevt.clkevt.min_delta_ns = clockevent_delta2ns(1, &clkevt.clkevt) + 1;
        clkevt.clkevt.cpumask = cpumask_of(0);
 
-       setup_irq(irq, &tc_irqaction);
-
        clockevents_register_device(&clkevt.clkevt);
+
+       setup_irq(irq, &tc_irqaction);
 }
 
 #else /* !CONFIG_GENERIC_CLOCKEVENTS */