clocksource: dw_apb: Fix error check

commit 1a33bd2be705cbb3f57d7223b60baea441039307 upstream.

irq_of_parse_and_map() returns 0 on error, while the code checks for NO_IRQ.
This breaks on platforms that have NO_IRQ != 0.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/clocksource/dw_apb_timer_of.c b/drivers/clocksource/dw_apb_timer_of.c
index ab09ed3742ee6c585ed6a607ce2adfbd7d0a5929..6b02eddc5f5069ff80f226fdad83ca447041f892 100644 (file)
--- a/drivers/clocksource/dw_apb_timer_of.c
+++ b/drivers/clocksource/dw_apb_timer_of.c
@@ -44,7 +44,7 @@ static void add_clockevent(struct device_node *event_timer)
        u32 irq, rate;
 
        irq = irq_of_parse_and_map(event_timer, 0);
-       if (irq == NO_IRQ)
+       if (irq == 0)
                panic("No IRQ for clock event timer");
 
        timer_get_base_and_rate(event_timer, &iobase, &rate);