reset_contr...ional_shared(9)

📦 version 7.3.1, in nixpkgs unstable

💖 reset_control_get_optional_shared — a love letter from the kernel API manual, section 9 🎀

okay so you're in the kernel API manual, section 9, and the page you clicked is reset_control_get_optional_shared(9). it's the optional bestie of reset_control_get_shared() and honestly she's so chill. let's get into it ✨

🌸 NAME 🌸

reset_control_get_optional_shared — literally just the optional version of reset_control_get_shared(). that's the whole vibe. 🫶

🦋 SYNOPSIS 🦋

struct reset_control * reset_control_get_optional_shared (struct device
*dev , const char *id );

✨ ARGUMENTS ✨

  • dev — the device that's gonna get reset by the controller. she's the main character here 👑
  • id — the reset line name. yes, you gotta name her 💅

🔥 DESCRIPTION 🔥

so this is the optional variant of reset_control_get_shared. and the "optional" part is the whole point, bestie: if the reset you asked for isn't specified in the device tree, this function returns NULL instead of throwing an error at you.

like — no drama, no error code, just NULL. it's giving "no thoughts, head empty" and honestly? iconic. 🧚

if you want the actual real details, go read reset_control_get_shared — this page is basically a remix of that one. no cap.

fr fr though: NULL is not an error here. don't go treating a perfectly fine optional miss like a failure, or you'll be debugging your own code at 3am 😭

🌈 SEE ALSO 🌈

kernel file ./include/linux/reset.h, plus the whole friend group:

that's the whole group chat, go say hi 🫶

and that's the page!! sourced straight from ./include/linux, dated October 2026, page reset_control_get_optional_shared(9). slay, go reset something responsibly 💅⭐💜

📦 where this page comes from