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rtc: sun6i: Fix memleak in sun6i_rtc_clk_init

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[ Upstream commit 28d211919e422f58c1e6c900e5810eee4f1ce4c8 ]

When clk_hw_register_fixed_rate_with_accuracy() fails,
clk_data should be freed. It's the same for the subsequent
two error paths, but we should also unregister the already
registered clocks in them.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201020061226.6572-1-dinghao.liu@zju.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dinghao Liu 2020-10-20 14:12:26 +08:00 committed by Greg Kroah-Hartman
parent c5eae3edc5
commit 3ce2fd56bb
1 changed files with 5 additions and 3 deletions
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8
drivers/rtc/rtc-sun6i.c
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@ -230,7 +230,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node)
300000000);
if (IS_ERR(rtc->int_osc)) {
pr_crit("Couldn't register the internal oscillator\n");
return;
goto err;
}
parents[0] = clk_hw_get_name(rtc->int_osc);
@ -246,7 +246,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node)
rtc->losc = clk_register(NULL, &rtc->hw);
if (IS_ERR(rtc->losc)) {
pr_crit("Couldn't register the LOSC clock\n");
return;
goto err_register;
}
of_property_read_string_index(node, "clock-output-names", 1,
@ -257,7 +257,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node)
&rtc->lock);
if (IS_ERR(rtc->ext_losc)) {
pr_crit("Couldn't register the LOSC external gate\n");
return;
goto err_register;
}
clk_data->num = 2;
@ -266,6 +266,8 @@ static void __init sun6i_rtc_clk_init(struct device_node *node)
of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
return;
err_register:
clk_hw_unregister_fixed_rate(rtc->int_osc);
err:
kfree(clk_data);
}