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authorDaniel Lezcano <daniel.lezcano@linaro.org>2015-09-20 07:00:10 -0700
committerDaniel Lezcano <daniel.lezcano@linaro.org>2015-09-29 14:33:34 +0200
commitccc42592d436d021d17f86729d24806f30dbad25 (patch)
tree04c7f7c56ca164ad10cf93c8eac2d03f1c05016d /drivers/clocksource
parenteef7635a22f6b144206b5ca2f1398f637acffc4d (diff)
clocksource/drivers/rockchip: Fix bad NO_IRQ usage
The current code assumes the 'irq_of_parse_and_map' will return NO_IRQ in case of failure. Unfortunately, the NO_IRQ is not consistent across the different architectures and we must not rely on it. NO_IRQ is equal to '-1' on ARM and 'irq_of_parse_and_map' returns '0' in case of an error. Hence, the latter won't be detected and will lead to a crash. Fix this by just checking 'irq' is different from zero. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/rockchip_timer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c
index bb2c2b050964..d3c1742ded1a 100644
--- a/drivers/clocksource/rockchip_timer.c
+++ b/drivers/clocksource/rockchip_timer.c
@@ -148,7 +148,7 @@ static void __init rk_timer_init(struct device_node *np)
bc_timer.freq = clk_get_rate(timer_clk);
irq = irq_of_parse_and_map(np, 0);
- if (irq == NO_IRQ) {
+ if (!irq) {
pr_err("Failed to map interrupts for '%s'\n", TIMER_NAME);
return;
}