ufshcd_mcq_config_mac(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ufshcd_mcq_config_mac — a Kernel API Manual moment ✨

okay so bestie, we're in the Kernel API Manual today and the main character is literally ufshcd_mcq_config_mac 🎀 no cap, this one's short but she matters.

🌸 NAME 🌸

ufshcd_mcq_config_mac — Set the #Max Activ Cmds. 🦋

like… yes, that's the whole vibe. she sets the max active commands. periodt.

✨ SYNOPSIS ✨

void ufshcd_mcq_config_mac (struct ufs_hba *hba , u32 max_active_cmds );

that's it. that's the whole call. note the void — she gives you nothing back, she's not here to hand out return values, she's here to configure. 💅

🫶 ARGUMENTS 🫶

  • hba — per adapter instance 🧚 this is the adapter's own little world, her per-instance era.
  • max_active_cmds — maximum # of active commands to the device at any time 🔥 the literal ceiling, the limit, the "you shall not pass" of in-flight commands.

💖 DESCRIPTION 💖

The controller won't send more than the max_active_cmds to the device at any time. full stop. 🛑

it's giving bouncer at the club — the controller checks the count, sees it's already at max_active_cmds, and is like "nope, we're full bestie, come back later" 🙈. it's a hard cap, not a suggestion, not a vibe, an actual limit on how many commands can be in flight to the device at any given moment ⭐. so if you set it low, things get cozy; if you set it high, get ready for a crowd 👑

no tricks, no hidden behaviour — the manpage literally only promises this one thing, and she delivers it 💯

🦋 SEE ALSO 🦋

Kernel file ./drivers/ufs/core/ufs-mcq.c 👑 and her whole friend group:

all iconic, all in the same source file, all worth a read iykyk 🌈

and that's the page!! 🍓 shoutout to ./drivers/ufs/core for housing all this, dated October 2026, and obviously the queen herself ufshcd_mcq_config_mac(9) 💜 mwah, slay, go set your max active cmds responsibly 🎀✨

📦 where this page comes from