platform_de...ter_resndata(9)

💖 platform_de...ter_resndata(9) 💖

okay bestie so you found the platform_de...ter_resndata(9) page in the Kernel API Manual and honestly? iconic of you. this is the one that lets you spin up a platform-level device with resources and platform-specific data all in one go. no cap, it's a whole vibe. let's get into it 🫶

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✨ NAME ✨

platform_device_register_resndata — add a platform-level device with resources and platform-specific data 🎀

like, it does exactly what it says on the tin. one call, device registered, resources attached, data bundled in. slay.

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🌸 SYNOPSIS 🌸

struct platform_device * platform_device_register_resndata (struct
device *parent , const char *name , int id , const struct resource *res
, unsigned int num , const void *data , size_t size );

look at that signature. it's giving main character energy with all those params, but don't stress — every single one is explained below 💅

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🦋 ARGUMENTS 🦋

• parent — the parent device for the device we're adding 👑 (yes, devices have parents too, it's a whole family tree situation)
• name — base name of the device we're adding ✨
• id — the instance id 🎀
• res — set of resources that needs to be allocated for the device 💜
• num — how many resources there are (yes, you have to tell it, it's not psychic 😭)
• data — platform specific data for this platform device 🍓
• size — size of platform specific data 📏

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🔥 DESCRIPTION 🔥

Returns struct platform_device pointer on success, or ERR_PTR on error.

that's it. that's the whole description. short, sweet, and lowkey menacing because you better check that return value — ERR_PTR is not a real pointer, bestie, do not dereference it. vibe check it first 💀

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/platform_device.h 🧚
• struct platform_device_info(9)
• platform_device_register_simple(9)
• platform_device_register_data(9)

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and that's the page!! go forth and register your devices, you absolute legend 🌟

signing off from ./include/linux, dated October 2026 — stay slay, stay compiled, and remember: always check for ERR_PTR 💖✨🎀