platform_de...egister_data(9)

💅 platform_device_register_data — the ✨ NAME ✨ moment

okay so bestie, we're in the Kernel API Manual today and this one's called platform_device_register_data — it's the function that adds a platform-level device and hands it its platform-specific data all in one go. two birds, one iconic little call. 🎀

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🌸 SYNOPSIS 🌸

struct platform_device * platform_device_register_data (struct device
*parent , const char *name , int id , const void *data , size_t size );

like, that's the whole signature. she's long but she's worth it, i promise 🫶

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✨ ARGUMENTS ✨

• parent — the parent device for the device we're adding. yes, devices have parents too, it's giving family tree energy 🌳
• name — the base name of the device we're adding. her government name, basically 💅
• id — the instance id. so if there's more than one of her, this is how we tell them apart 👯
• data — the platform specific data for this platform device. the little care package she comes with 🎁
• size — the size of that platform specific data. gotta know how much care package we're dealing with fr fr 📦

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🦋 DESCRIPTION 🦋

so what does she actually do? this function creates a simple platform device — one that requires minimal resource and memory management. low maintenance queen. she doesn't need a whole thing, she just shows up and slays 🔥

and here's the cute part: there's a canned release function that frees the memory allocated for the device, and the way that works means drivers using these devices can be unloaded without waiting for the last reference to the device to be dropped. no cap, that's the seller. no hanging around waiting for the last one to leave the group chat 😭

returns a struct platform_device pointer on success, or ERR_PTR on error. so like… check your return value, bestie. ERR_PTR is not the vibe you want to be dereferencing 💀

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🌈 SEE ALSO 🌈

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

the whole squad, honestly. go read them, iykyk 👑

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mwah 💋 that's the page! brought to you from the ./include/linux directory of the Kernel API Manual, dated October 2026 — bookmark it, screenshot it, put it on your fridge, she deserves it. 🎀✨