Messages in this thread | | | Subject | Re: [PATCH v4] clk: mediatek: Do a runtime PM get on controllers during probe | From | Stephen Boyd <> | Date | Wed, 10 Apr 2024 20:48:45 -0700 |
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Quoting Pin-yen Lin (2024-03-12 04:51:55) > mt8183-mfgcfg has a mutual dependency with genpd during the probing > stage, which leads to a deadlock in the following call stack: > > CPU0: genpd_lock --> clk_prepare_lock > genpd_power_off_work_fn() > genpd_lock() > generic_pm_domain::power_off() > clk_unprepare() > clk_prepare_lock() > > CPU1: clk_prepare_lock --> genpd_lock > clk_register() > __clk_core_init() > clk_prepare_lock() > clk_pm_runtime_get() > genpd_lock() > > Do a runtime PM get at the probe function to make sure clk_register() > won't acquire the genpd lock. Instead of only modifying mt8183-mfgcfg, > do this on all mediatek clock controller probings because we don't > believe this would cause any regression. > > Verified on MT8183 and MT8192 Chromebooks. > > Fixes: acddfc2c261b ("clk: mediatek: Add MT8183 clock support") > Signed-off-by: Pin-yen Lin <treapking@chromium.org> > > ---
Applied to clk-fixes
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