ufshcd_scale_clks(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ufshcd_scale_clks(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ this one's about a lil function called ufshcd_scale_clks and honestly it's giving "clock glow-up energy" 🕐💖

🌸 NAME 🌸

ufshcd_scale_clks — scale up or scale down UFS controller clocks ⏫⏬

like, literally the whole personality of this function is "make the clocks bigger" or "make the clocks smaller" and that's it, that's the vibe 🎀

✨ SYNOPSIS ✨

int ufshcd_scale_clks (struct ufs_hba *hba , unsigned long freq , bool
       scale_up );

she takes three things and returns an int, no cap 🫶

🦋 ARGUMENTS 🦋

  • hba — per adapter instance 💫 this is the one and only adapter you're working with, your main character struct
  • freq — frequency to scale 🔥 the number you're scaling to, obvious but we said it
  • scale_up — True if scaling up and false if scaling down ⬆️⬇️ like, this is the direction switch, the vibes selector, the whole "which way are we going" of it all

👑 RETURN 👑

0 if successful; < 0 upon failure. 💀

so yeah — zero is the slay outcome, anything less than zero means something went sideways and she's telling you about it 😭

🌈 SEE ALSO 🌈

the kernel file ./drivers/ufs/core/ufshcd.c and honestly the entire extended friend group 🫶 here's everybody, no one left behind, periodt:

and that's the whole page babes 💜 go scale some clocks, drink water, and remember: 0 is the only return value that's invited to the party 🎉

mwah 💋 this page lives in ./drivers/ufs/core, dated October 2026, and it's part of the Kernel API Manual — see you in the group chat 🫶✨🎀

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