[PATCH] clocksource/drivers/oxnas: fix error check return value of irq_of_parse_and_map()

[cgel.zte at gmail.com]

From: Lv Ruyi <lv.ruyi at zte.com.cn>

The irq_of_parse_and_map() function returns 0 on failure, and does not
return an negative value.

Fixes: 	89355274e1f7 ("clocksource/drivers/oxnas-rps: Add Oxford Semiconductor RPS Dual Timer")
Reported-by: Zeal Robot <zealci at zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi at zte.com.cn>
---
 drivers/clocksource/timer-oxnas-rps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/timer-oxnas-rps.c b/drivers/clocksource/timer-oxnas-rps.c
index 56c0cc32d0ac..d514b44e67dd 100644
--- a/drivers/clocksource/timer-oxnas-rps.c
+++ b/drivers/clocksource/timer-oxnas-rps.c
@@ -236,7 +236,7 @@ static int __init oxnas_rps_timer_init(struct device_node *np)
 	}
 
 	rps->irq = irq_of_parse_and_map(np, 0);
-	if (rps->irq < 0) {
+	if (!rps->irq) {
 		ret = -EINVAL;
 		goto err_iomap;
 	}
-- 
2.25.1