dprtc_clear_irq_status(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dprtc_clear_irq_status — clearing a pending interrupt's status

okay so bestie, we're in the Kernel API Manual today and this one is a little function with a big job: dprtc_clear_irq_status literally just clears a pending interrupt's status. that's the whole vibe. no cap. 🎀

✨ SYNOPSIS ✨

int dprtc_clear_irq_status (struct fsl_mc_io *mc_io , u32 cmd_flags ,
       u16 token , u8 irq_index , u32 status );

she takes five args and hands you back an int. that's it. that's the whole thing. 🦋

🌸 ARGUMENTS 🌸

okay so let's meet the cast, one by one, main character energy only:

  • mc_io — pointer to the MC portal's I/O object. yes, the portal. she's the connection, she's the access point, you need her. 🔑
  • cmd_flags — the command flags, and it's one or more of 'MC_CMD_FLAG_'. note the trailing underscore, that's not a typo, that's just how they named them, iykyk. 🚩
  • token — the token of the DPRTC object. (u16, for the record.) it's giving "your ticket to ride", it's giving "you must present this at the door". 🎫
  • irq_index — the interrupt index you want to configure. each interrupt has its own little slot, and you're picking which one. 🎯
  • status — the bits you want to clear. this is the good part, bestie, so listen up: it's W1C, aka write 1 to clear. one bit per cause, and the rules are:
    • 0 = don't change it (leave that bit alone, she's fine)
    • 1 = clear that status bit ✨

so like, you know how normally you'd expect 0 to mean "off"? not here. here you write the 1 to make it go away. it's giving reverse psychology and honestly it ate. 💅

💀 RETURN 💀

no return value is documented on this page. that's not me being lazy, that's genuinely how it is — the section is there and it's empty, so we're all just out here living the mystery. if you need the return semantics, go read the source (see below). 🙈

🔥 SEE ALSO 🔥

the kernel file herself lives at:

./drivers/net/ethernet/freescale/dpaa2/dprtc.c

and here's the whole friend group — go say hi to all of them, they're all DPRTC and they all slay in their own way:

so like, if you're clearing status you're probably also getting status, and if you're enabling you're probably masking, you see the pattern? it's a whole little ecosystem and they support each other 🫶

and that's the page, bestie!! source path got cut off at ./drivers/net/ethernet/freesca... and the date on this one is October 2026 — so yeah, mark your calendar, this manual page is from the future and she's still clearing interrupt status like a queen 👑⭐💜

📦 where this page comes from