dev_pm_put_subsys_data(9)

✨ dev_pm_put_subsys_data(9) ✨

ok so this is a page from the Kernel API Manual, bestie — yes, the actual kernel, and yes, it's giving "I read the source for fun" energy 😭 but like, in a cool way. stay with me, this one's short and sweet fr fr 💖

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🫶 NAME

dev_pm_put_subsys_data — drop that reference to power.subsys_data, bestie. just let it go 💅

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🎀 SYNOPSIS

void dev_pm_put_subsys_data (struct device *dev );

that's it. that's the whole function. no return value, nothing. void as in "I give nothing back, and that's on purpose" 💀

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🌸 ARGUMENTS

• dev — the device you're handling, babe. the one you're dropping the reference on. like, hand it over, it's fine 🫶

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🦋 DESCRIPTION

okay, here's the tea ☕ — if the reference counter of power.subsys_data hits zero after you drop the reference, then power.subsys_data gets removed. gone. deleted. no cap. 🔥

so like... you're the last one holding it, and the moment you let go, poof, it's out of the building. main character exit energy, honestly 👑

it's literally the reverse of grabbing the reference in the first place (iykyk), and the whole thing is just bookkeeping — counter goes down, counter hits zero, data goes away. simple as that 🌈

no return value means no vibes check afterwards — you don't get told "hey, it got removed." it just does. you're on your own, diva 💅

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🧚 SEE ALSO

• Kernel file ./drivers/base/power/common.c — where the actual code lives, if you wanna go read it like the nerd icon you are 📖
• dev_pm_get_subsys_data(9)
• dev_pm_domain_attach(9)
• dev_pm_domain_attach_by_id(9)
• dev_pm_domain_attach_by_name(9)
• dev_pm_domain_attach_list(9)
• devm_pm_domain_detach_list(9)
• devm_pm_domain_attach_list(9)
• dev_pm_domain_detach(9)
• dev_pm_domain_detach_list(9)
• dev_pm_domain_start(9)
• dev_pm_domain_set(9)
• dev_pm_domain_set_performance_state(9)

like, the whole attach/detach friend group is right there. go say hi ✨

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and that's the whole page, bestie — short, iconic, zero notes 💖 huge slay to the source at ./drivers/base/power, dated October 2026 (yes, future energy, we don't question it 🌟). now go forth and drop those references responsibly 🎀🦋