cpufreq: mediatek: fix KP caused by handler usage after regulator_put/clk_put

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Any kind of failure in mtk_cpu_dvfs_info_init() will lead to calling
regulator_put() or clk_put() and the KP will occur since the regulator/clk
handlers are used after released in mtk_cpu_dvfs_info_release().

To prevent the usage after regulator_put()/clk_put(), the regulator/clk
handlers are addressed in a way of "Free the Last Thing Style".

Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
Fixes: 4b9ceb757b ("cpufreq: mediatek: Enable clocks and regulators")
Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Suggested-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

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Jia-Wei Chang 2023-03-24 18:11:28 +08:00 • committed by Viresh Kumar

parent d51c632309

commit d51e106240

1 changed files with 30 additions and 32 deletions

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drivers/cpufreq/mediatek-cpufreq.c

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