i91u_intr(9)

💅 i91u_intr(9) — the IRQ handler one 💖

okay so real talk, this is a page from the Kernel API Manual and it's about i91u_intr, which is literally the IRQ handler. yes that kind of handler. interrupt queen behavior ✨

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✨ NAME ✨

i91u_intr — IRQ handler 🎀

like… the function that shows up when the interrupt walks in the door. no cap.

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🦋 SYNOPSIS 🦋

irqreturn_t i91u_intr (int irqno , void *dev_id );

bestie look at that return type. irqreturn_t. it's giving "I take my job seriously" 💅

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🌸 ARGUMENTS 🌸

• irqno — the IRQ number ✨ like, which interrupt are we even talking about, y'know?
• dev_id — the IRQ identifier 🫶 the little tag that tells you which device this whole situation belongs to

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💜 DESCRIPTION 💜

okay so here's the tea ☕ — i91u_intr takes the relevant locks first, and then it invokes the actual isr processing code while it's holding that lock. 🔒

that's it. that's the whole vibe. lock first, then do the isr work under the lock. no skipping ahead, no main character shortcuts. periodt 💀

ngl the lock ordering is not a suggestion, it's the whole point. respect it 🙈

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🔥 SEE ALSO 🔥

the friend group 💖 (kernel file ./drivers/scsi/initio.c and everyone in it):

• initio_se2_instr(9)
• initio_se2_ew_en(9)
• initio_se2_ew_ds(9)
• initio_se2_rd(9)
• initio_se2_wr(9)
• initio_se2_rd_all(9)
• initio_se2_update_all(9)
• initio_read_eeprom(9)
• initio_stop_bm(9)
• initio_reset_scsi(9)
• initio_init(9)
• initio_alloc_scb(9)
• initio_release_scb(9)
• initio_next_state(9)
• initio_state_1(9)
• initio_state_2(9)
• initio_state_3(9)
• initio_state_4(9)
• initio_state_5(9)
• initio_state_6(9)
• initio_state_7(9)
• initio_xfer_data_in(9)
• initio_xfer_data_out(9)
• int_initio_scsi_rst(9)
• int_initio_resel(9)
• int_initio_bad_seq(9)
• initio_msgout_abort_targ(9)
• initio_msgout_abort_tag(9)
• initio_msgin(9)
• initio_bus_device_reset(9)
• initio_build_scb(9)
• i91u_queuecommand_lck(9)
• i91u_bus_reset(9)
• i91u_biosparam(9)
• i91u_unmap_scb(9)
• initio_remove_one(9)

that's the whole squad, one to thirty-six, all accounted for 👑 iykyk.

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okay that's the page!! sending you off with the source deets: this one lives under ./drivers/scsi, and it's dated October 2026 🗓️✨ go forth and handle those interrupts, bestie — slay 💅💖🎀