In the Linux kernel, the following vulnerability has been resolved:

clk: mediatek: Do a runtime PM get on controllers during probe

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.

kernel.org https://git.kernel.org/stable/c/165d226472575b213dd90dfda19d1605dd7c19a8 [No types assigned]

kernel.org https://git.kernel.org/stable/c/2f7b1d8b5505efb0057cd1ab85fca206063ea4c3 [No types assigned]

kernel.org https://git.kernel.org/stable/c/b62ed25feb342eab052822eff0c554873799a4f5 [No types assigned]

kernel.org https://git.kernel.org/stable/c/c0dcd5c072e2a3fff886f673e6a5d9bf8090c4cc [No types assigned]