devm_regmap_field_alloc(9)

📦 version 7.3.1, in nixpkgs unstable

💖 devm_regmap_field_alloc 💖

okay so this one is from the Kernel API Manual, and it's literally the "let the kernel clean up after you" era of your life. bestie, this is the devm-managed way to allocate and initialise a register field, and it's giving responsible main character energy ✨

🌸 NAME 🌸

devm_regmap_field_alloc — allocate and initialise a register field. that's it, that's the whole vibe 🎀

✨ SYNOPSIS ✨

struct regmap_field * devm_regmap_field_alloc (struct device *dev ,
struct regmap *regmap , struct reg_field reg_field );

no cap, that's the whole signature. copy it exactly, don't get creative 💅

🦋 ARGUMENTS 🦋

  • dev — the device that will be interacted with. this is your little handle to the hardware situation 🫶
  • regmap — the regmap bank where this register field lives. like, the neighbourhood your field is in 🏡
  • reg_field — the register field, within the bank. the actual star of the show ⭐

🔥 DESCRIPTION 🔥

so here's the tea: the return value is gonna be an ERR_PTR on error, or a valid pointer to a struct regmap_field if everything slayed. 😭

and the best part? the regmap_field is automatically freed by the device management code. not you. never you. that's devm's whole thing, and honestly? obsessed. 💅✨

ngl bestie, always check for that ERR_PTR before you dereference — that's just good manners 🙈

👑 SEE ALSO 👑

the kernel file lives at ./drivers/base/regmap/regmap.c, and here's the whole friend group — every single one of them, no gatekeeping 🌈

like, the whole regmap family reunion. periodt 🧚💜

kisses, bestie — this page came from the kernel source tree at ./drivers/base/regmap, and it's stamped October 2026. go forth and let devm handle the cleanup for you 💖🎀✨

📦 where this page comes from