_read_hardreset(9)

📦 version 7.3.1, in nixpkgs unstable

💅 _read_hardreset(9) — the Kernel API Manual, bestie edition 🎀

okay so this is a page from the Kernel API Manual, section 9, and yes we're literally reading a manpage about reading a reset line. iconic behavior. let's go ✨

🌸 NAME 🌸

_read_hardreset — bestie, this one reads the HW reset line state of submodules contained in the hwmod module. that's the whole vibe check. 💖

✨ SYNOPSIS ✨

int _read_hardreset (struct omap_hwmod *oh , const char *name );

like, that's it. that's the whole call. 🫶

🦋 ARGUMENTS 🦋

  • oh — a struct omap_hwmod *. yes it's a pointer. yes it's a hwmod. no we're not gonna be weird about it.
  • name — the name of the reset line we're gonna look up and read. girl, you gotta know which reset line. 🎯

💀 DESCRIPTION 💀

so the whole job of this function is: return the state of the reset line. that's the main character energy right there. 👑

but it has opinions, and here's the exact breakdown, no cap:

  • returns -EINVAL if oh is null. like, if you hand it nothing, it's gonna say "invalid argument" at you. fair tbh. 🙈
  • returns -ENOSYS if we have no way of reading the hardreset line status on the currently-booted SoC. not every SoC can do this, and the function will straight up tell you the function isn't implemented for you. 😭
  • otherwise, it passes along the return value from _lookup_hardreset or the SoC's is_hardreset_asserted code. so like, whatever those say, that's what you get back. no extra commentary. 💅
ngl the moral of the story is: check your return values, bestie. it's giving "the error codes are the personality."

🌈 SEE ALSO 🌈

okay this is the big one, the link dump, the group chat invite list. here's every single reference, verbatim, because we do not skip the boring parts around here 🫶

iykyk, that's a lot of friends. the way this one function is connected to literally everyone in the OMAP hwmod friend group 😭💜

that's the page, bestie!! this one came from ./arch/arm/mach-omap2, dated October 2026, and it's filed under _read_hardreset(9). slay, go read some reset lines. 🌟💅🎀

📦 where this page comes from