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Message-ID: <20221029114427.946520-1-yangyingliang@huawei.com>
Date: Sat, 29 Oct 2022 19:44:27 +0800
From: Yang Yingliang <yangyingliang@...wei.com>
To: <linux-kernel@...r.kernel.org>
CC: <daniel.lezcano@...aro.org>, <tony@...mide.com>,
<tglx@...utronix.de>
Subject: [PATCH v2] clocksource/drivers/timer-ti-dm: fix missing clk_disable_unprepare in dmtimer_systimer_init_clock()
If clk_get_rate() fails which is called after clk_prepare_enable(),
clk_disable_unprepare() need be called in error path to disable the
clock in dmtimer_systimer_init_clock().
Fixes: 52762fbd1c47 ("clocksource/drivers/timer-ti-dm: Add clockevent and clocksource support")
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
v1 -> v2:
Add fix tag.
v1 patch link:
https://lore.kernel.org/lkml/20220514084008.680446-1-yangyingliang@huawei.com/
---
drivers/clocksource/timer-ti-dm-systimer.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/clocksource/timer-ti-dm-systimer.c b/drivers/clocksource/timer-ti-dm-systimer.c
index 2737407ff069..632523c1232f 100644
--- a/drivers/clocksource/timer-ti-dm-systimer.c
+++ b/drivers/clocksource/timer-ti-dm-systimer.c
@@ -345,8 +345,10 @@ static int __init dmtimer_systimer_init_clock(struct dmtimer_systimer *t,
return error;
r = clk_get_rate(clock);
- if (!r)
+ if (!r) {
+ clk_disable_unprepare(clock);
return -ENODEV;
+ }
if (is_ick)
t->ick = clock;
--
2.25.1
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