devm_watchd...ister_device(9)

💖 devm_watchd...ister_device(9) 💖

okay bestie, welcome to the Kernel API Manual, and yes the title got cut off mid-word — devm_watchd...ister_device(9) is just out here living its truncated truth and honestly? iconic. it's the devm_ flavour of watchdog registration, and it's gonna make your driver cleanup so much less of a situation. let's go 🎀

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✨ NAME ✨

devm_watchdog_register_device — the resource managed glow-up of watchdog_register_device(). like, same energy, but the kernel handles the breakup for you 💅

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🦋 SYNOPSIS 🦋

int devm_watchdog_register_device (struct device *dev , struct
       watchdog_device *wdd );

copy it exactly, bestie, no improvising 🙈

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🌸 ARGUMENTS 🌸

• dev — the device that's registering this watchdog device. it's the main character of this whole operation 👑
• wdd — the watchdog device itself. the precious cargo 🫶

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⭐ DESCRIPTION ⭐

so this is a managed watchdog_register_device. what does managed mean, you ask? it means the kernel is your responsible friend who remembers to text back 😭

for any watchdog device registered through this function, watchdog_unregister_device gets called automatically when the driver detaches. no manual cleanup, no forgetting, no "oops I leaked a watchdog" moment. the devm framework literally has your back, fr fr 💜

and if you want the full lore? go read watchdog_register_device for more information. it's giving prequel energy ✨

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/watchdog/watchdog_core.c
• watchdog_init_timeout(9)
• watchdog_set_restart_priority(9)
• watchdog_register_device(9)
• watchdog_unregister_device(9)

all the watchdog besties in one place, iykyk 🌈

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ngl the automatic unregister on detach is the whole point. don't sleep on it 💀

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written down in ./drivers/watchdog, dated October 2026, and stamped with the very same devm_watchd...ister_device(9) name up in the corner 🦋

okay that's the page, ily, go register some watchdogs responsibly 💖✨🎀🫶