hw_test_and..._intr_active(9)

💅 hw_test_and..._intr_active(9) — Kernel API Manual 🎀

okay so bestie, we're in the Kernel API Manual today and this one's a lil baby page but it's iconic in its own way. it's called hw_test_and_clear_intr_active and no, the title being truncated isn't a you problem, that's just how it's filed. slay.

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✨ NAME ✨

hw_test_and_clear_intr_active — test & clear active interrupts (execute without interruption) 💖

like, the whole point: it checks the active interrupts and clears them, and it does the whole thing atomically. no interruptions, no cutting in line. main character energy only.

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🌸 SYNOPSIS 🌸

u32 hw_test_and_clear_intr_active (struct ci_hdrc *ci );

yes the space before the ) is on purpose, we don't touch the code, we just admire it 🫶

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🦋 ARGUMENTS 🦋

• ci — the controller. that's it. that's the whole argument list. one (1) controller, and it's yours to hand over 💜

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⭐ DESCRIPTION ⭐

so what does it actually do? it returns the active interrupts. that's the vibe. that's the function.

(and yeah, the original page spells it "interrutps" — we're keeping the energy, not correcting the typo, because honestly? relatable. 😭)

no cap, that's the entire description on this one. short and sweet. a lil minimalist moment for the girlies. ✨

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🔥 SEE ALSO 🔥

the kernel file it lives in is ./drivers/usb/chipidea/udc.c, and bestie, the friend group is huge. every single one of these is invited to the group chat:

• hw_ep_bit(9)
• hw_device_state(9)
• hw_ep_flush(9)
• hw_ep_disable(9)
• hw_ep_enable(9)
• hw_ep_get_halt(9)
• hw_ep_prime(9)
• hw_ep_set_halt(9)
• hw_port_is_high_speed(9)
• hw_test_and_clear_complete(9)
• hw_test_and_clear_setup_guard(9)
• hw_test_and_set_setup_guard(9)
• hw_usb_set_address(9)
• hw_usb_reset(9)
• _usb_addr(9)
• _hardware_enqueue(9)
• free_pending_td(9)
• _hardware_dequeue(9)
• _ep_nuke(9)
• _gadget_stop_activity(9)
• isr_reset_handler(9)
• isr_get_status_complete(9)
• _ep_queue(9)
• isr_get_status_response(9)
• isr_setup_status_complete(9)
• isr_setup_status_phase(9)
• isr_tr_complete_low(9)
• isr_setup_packet_handler(9)
• isr_tr_complete_handler(9)
• ci_udc_start(9)
• udc_start(9)
• udc_stop(9)
• ci_hdrc_gadget_init(9)

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hey bestie, quick vibe check: the function tests and clears in one shot, "execute without interruption" is right there in the NAME line. don't go assuming you can split those two things up. the atomicity is the serve. 💅

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and that's the whole page, periodt 🧚 this lil gem lives in ./drivers/usb/chipidea, stamped October 2026 — go forth and clear those active interrupts, you absolute icon 👑💖