[PATCH 5.4 212/453] clocksource/drivers/orion: Add missing clk_disable_unprepare() on error path

[Greg Kroah-Hartman]

From: Yang Yingliang <yangyingliang@xxxxxxxxxx>

[ Upstream commit c1e6cad00aa2f17845e7270e38ff3cc82c7b022a ]

After calling clk_prepare_enable(), clk_disable_unprepare() need
be called on error path.

Fixes: fbe4b3566ddc ("clocksource/drivers/orion: Convert init function...")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20201111064706.3397156-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/clocksource/timer-orion.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/clocksource/timer-orion.c b/drivers/clocksource/timer-orion.c
index 7d487107e3cd8..32b2563e2ad1b 100644
--- a/drivers/clocksource/timer-orion.c
+++ b/drivers/clocksource/timer-orion.c
@@ -149,7 +149,8 @@ static int __init orion_timer_init(struct device_node *np)
 	irq = irq_of_parse_and_map(np, 1);
 	if (irq <= 0) {
 		pr_err("%pOFn: unable to parse timer1 irq\n", np);
-		return -EINVAL;
+		ret = -EINVAL;
+		goto out_unprep_clk;
 	}
 
 	rate = clk_get_rate(clk);
@@ -166,7 +167,7 @@ static int __init orion_timer_init(struct device_node *np)
 				    clocksource_mmio_readl_down);
 	if (ret) {
 		pr_err("Failed to initialize mmio timer\n");
-		return ret;
+		goto out_unprep_clk;
 	}
 
 	sched_clock_register(orion_read_sched_clock, 32, rate);
@@ -175,7 +176,7 @@ static int __init orion_timer_init(struct device_node *np)
 	ret = setup_irq(irq, &orion_clkevt_irq);
 	if (ret) {
 		pr_err("%pOFn: unable to setup irq\n", np);
-		return ret;
+		goto out_unprep_clk;
 	}
 
 	ticks_per_jiffy = (clk_get_rate(clk) + HZ/2) / HZ;
@@ -188,5 +189,9 @@ static int __init orion_timer_init(struct device_node *np)
 	orion_delay_timer_init(rate);
 
 	return 0;
+
+out_unprep_clk:
+	clk_disable_unprepare(clk);
+	return ret;
 }
 TIMER_OF_DECLARE(orion_timer, "marvell,orion-timer", orion_timer_init);
-- 
2.27.0