ufshcd_make_hba_operational(9)

📦 version 7.3.1, in nixpkgs unstable

✨ ufshcd_make_hba_operational(9) ✨

okay so picture this: you're deep in the Kernel API Manual, section 9, and the function you're staring at is ufshcd_make_hba_operational(9) — and yes bestie, it does exactly what it says on the tin 💅

🎀 NAME 🎀

ufshcd_make_hba_operational — the glow-up moment where your UFS controller officially becomes operational ✨

🦋 SYNOPSIS 🦋

int ufshcd_make_hba_operational (struct ufs_hba *hba );

🌸 ARGUMENTS 🌸

  • hba — the per adapter instance, aka the one (1) host controller adapter we're about to bring to life 🫶

💖 DESCRIPTION 💖

So the whole vibe of this function is: bring the UFS host controller to an operational state. That's it, that's the mission, main character energy only 👑

To get there it does these four things, in order, no skipping:

  1. Enable required interrupts 🔥
  2. Configure interrupt aggregation
  3. Program UTRL and UTMRL base address
  4. Configure run-stop-registers

Like literally it's the checklist before the controller is allowed to be perceived. Periodt 💅

⭐ RETURN ⭐

  • 0 if successful 🎉
  • < 0 upon failure 😭

🔥 SEE ALSO 🔥

Kernel file ./drivers/ufs/core/ufshcd.c — and honestly the whole extended friend group, because this function does not exist in a vacuum, iykyk:

okay that's the whole page, no notes 💜 and for the sign-off credits: this one lives under ./drivers/ufs/core, dated October 2026 — go forth and make that HBA operational, bestie, you've got this 🧚‍♀️🌈🎀

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