lpfc_sli4_enable_intr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 lpfc_sli4_enable_intr(9) 💅

okay so this is straight out of the Kernel API Manual and we are THRIVING ✨

🌸 NAME 🌸

lpfc_sli4_enable_intr — enable device interrupt to SLI-4 device 💖

🎀 SYNOPSIS 🎀

uint32_t lpfc_sli4_enable_intr (struct lpfc_hba *phba , uint32_t
cfg_mode );

🦋 ARGUMENTS 🦋

  • phba — pointer to lpfc hba data structure. that's the guy you're turning the interrupts on for, iykyk 🫶
  • cfg_mode — Interrupt configuration mode (INTx, MSI or MSI-X). the vibe you're asking for, but see below bestie 👀

🔥 DESCRIPTION 🔥

okay so this routine is invoked to enable device interrupt and associate driver's interrupt handler(s) to interrupt vector(s) to device with SLI-4 interface spec. literally that's the whole job 💅

now here's the part you actually need to remember: it depends on the interrupt mode configured to the driver, and the driver will try to fallback from the configured interrupt mode to an interrupt mode which is supported by the platform, kernel, and device — in this exact order:

MSI-X -> MSI -> IRQ

so like, you ask for MSI-X, the platform says "bestie no", and it slides down the ladder. main character energy, honestly. 🌈

💀 Return codes — Interrupt mode (2, 1, 0) means successful, and LPFC_INTR_ERROR means error. that's it, that's the whole vibe check.

👑 SEE ALSO 👑

Kernel file ./drivers/scsi/lpfc/lpfc_init.c — and now, the friend group. no cap, this is a long list, so buckle up 🍓

and that's the whole page, bestie 💜 this gem lives in ./drivers/scsi/lpfc, stamped October 2026 — go forth and enable those interrupts, you absolute icon 🧚✨

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