nfc_set_drvdata(9)

🌸 nfc_set_drvdata(9) 🌸

okay bestie, so this is a page from the Kernel API Manual (yes, the kernel kernel, we're being iconic today 💅), and it's about the lil function that tucks your driver's very own data into an NFC device. no cap, it's a one-liner of a function but it's important. let's get into it 🫶

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✨ NAME ✨

nfc_set_drvdata — set driver specific data 💾

like, you're literally attaching your driver's personal little payload to the device. main character energy for your private pointer, fr fr.

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🎀 SYNOPSIS 🎀

void nfc_set_drvdata (struct nfc_dev *dev , void *data );

that's it. that's the whole vibe. it returns void, so don't go looking for a return value, there isn't one, periodt. 💀

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🦋 ARGUMENTS 🦋

• dev — The nfc device 🌈 — the NFC device you're handing over, the one that's gonna carry your data around.
• data — Pointer to driver specific data 🍓 — whatever your driver wants to stash there. it's a void *, so the function is not judging you, it's not checking, it's just holding your pointer. lowkey the most accepting function in the kernel.

bestie reminder: data is literally just a pointer. what it points at, and whether it stays valid, is your business — this page doesn't promise anything beyond handing it over, iykyk 🙈

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👑 SEE ALSO 👑

go read these next, they're all in the same friend group:

• Kernel file ./include/net/nfc/nfc.h — the header where all this lives, the mothership ⭐
• struct nfc_target(9) — the target struct, iconic in its own right
• nfc_free_device(9) — the cleanup bestie, because every device eventually has to go 🧹
• nfc_set_parent_dev(9) — sets up the parent device, family tree vibes 🌸
• nfc_get_drvdata(9) — the getter to this setter, they're a matching set, obsessed 💖
• nfc_device_name(9) — gives your device a name, slay 💅
• nfc_vendor_cmd_alloc_reply_skb(9) — allocates a reply skb for vendor commands, allocating queen energy 🔥

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💜 a lil sign-off 💜

this page lives in ./include/net/nfc and it was dated October 2026 — so yeah, it's from the future, we love a forward-thinking manual. the whole thing is titled nfc_set_drvdata(9) and if you got this far, you ate. no crumbs. go set some driver data, bestie 🎀✨🦋

mwah 💋