__parport_register_driver(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __parport_register_driver(9) — like, the kernel API manual bestie ✨

okay so real quick: this page lives in the Kernel API Manual and it's all about __parport_register_driver(9) — the function that gets your parallel port driver on the list. yes the double-underscore is part of the name, don't @ me 🎀

✨ NAME ✨

__parport_register_driver — register a parallel port device driver 🦋

🌸 SYNOPSIS 🌸

int __parport_register_driver (struct parport_driver *drv , struct module *owner , const char *mod_name );

🎀 ARGUMENTS 🎀

  • drv — the struct that describes your driver. it's giving main character, it's the whole vibe check of this call 💖
  • owner — the owner module of drv. literally who owns it 🫶
  • mod_name — a module name string. just a lil string, no cap ✨

🔥 DESCRIPTION 🔥

so a parallel port device driver calls this when it wants to get notified about ports. not like a cute little ping either — notifications about ports being found in the system, and ports that are no longer available. both directions, bestie. 💅

if devmodel is true then the new device model is used for registration. that's the whole rule, no drama 🌈

the drv structure is allocated by you, the caller — and it must not be deallocated until after calling parport_unregister_driver. like, do not free it early, that's not the vibe, that's a bug 😭

💀 ok now the important part. if you're using the non device model, read this twice:

the driver's attach function may block. the port that attach is given will be valid for the duration of the callback — but if your driver wants to take a copy of that pointer, it must call parport_get_port to do so. good news tho: calling parport_register_device on that port will do this for you automatically. slay, thank you 👑

the driver's detach function may block too. same deal: the port that detach is given will be valid for the duration of the callback, and if the driver wants to take a copy of the pointer it must call parport_get_port to do so. same rules, different callback 🦋

returns 0 on success. ✨ the non device model will always succeeds. but the new device model can fail and will return the error code. so yeah, check your return value, i'm begging 🙈

⭐ SEE ALSO ⭐

🧚 that's the whole page, you ate it, go register some drivers periodt 💜

mwah 💋 this one's from ./drivers/parport, dated October 2026, and it's the __parport_register_driver(9) page — ily, bye 🍓

📦 where this page comes from