diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2020-11-16 16:51:23 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2020-12-03 21:16:26 +0300 |
| commit | eee422c46e6840a81c9db18a497b74387a557b29 (patch) | |
| tree | 2f9cad1f62355180a53dadbbb407ab1045133f95 | |
| parent | b7c0fed5ccf2c5cb4bb43ddc6b1625f042a83d0a (diff) | |
| download | linux-eee422c46e6840a81c9db18a497b74387a557b29.tar.xz | |
clocksource/drivers/cadence_ttc: Fix memory leak in ttc_setup_clockevent()
If clk_notifier_register() failed, ttc_setup_clockevent() will return
without freeing 'ttcce', which will leak memory.
Fixes: 70504f311d4b ("clocksource/drivers/cadence_ttc: Convert init function to return error")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20201116135123.2164033-1-yukuai3@huawei.com
| -rw-r--r-- | drivers/clocksource/timer-cadence-ttc.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/clocksource/timer-cadence-ttc.c b/drivers/clocksource/timer-cadence-ttc.c index 80e960602030..4efd0cf3b602 100644 --- a/drivers/clocksource/timer-cadence-ttc.c +++ b/drivers/clocksource/timer-cadence-ttc.c @@ -413,10 +413,8 @@ static int __init ttc_setup_clockevent(struct clk *clk, ttcce->ttc.clk = clk; err = clk_prepare_enable(ttcce->ttc.clk); - if (err) { - kfree(ttcce); - return err; - } + if (err) + goto out_kfree; ttcce->ttc.clk_rate_change_nb.notifier_call = ttc_rate_change_clockevent_cb; @@ -426,7 +424,7 @@ static int __init ttc_setup_clockevent(struct clk *clk, &ttcce->ttc.clk_rate_change_nb); if (err) { pr_warn("Unable to register clock notifier.\n"); - return err; + goto out_kfree; } ttcce->ttc.freq = clk_get_rate(ttcce->ttc.clk); @@ -455,15 +453,17 @@ static int __init ttc_setup_clockevent(struct clk *clk, err = request_irq(irq, ttc_clock_event_interrupt, IRQF_TIMER, ttcce->ce.name, ttcce); - if (err) { - kfree(ttcce); - return err; - } + if (err) + goto out_kfree; clockevents_config_and_register(&ttcce->ce, ttcce->ttc.freq / PRESCALE, 1, 0xfffe); return 0; + +out_kfree: + kfree(ttcce); + return err; } static int __init ttc_timer_probe(struct platform_device *pdev) |