qdio_shutdown(9)

🌸 NAME 🌸

okay so qdio_shutdown is the function that shuts down a qdio subchannel — that's literally the whole vibe, bestie. 💅

✨ SYNOPSIS ✨

int qdio_shutdown (struct ccw_device *cdev , int how );

🎀 ARGUMENTS 🎀

• cdev — the associated ccw device. like, the device this whole thing is attached to, no cap.
• how — tells it how to shut down: use halt or clear — those are the choices, periodt. 💖

🦋 SEE ALSO 🦋

Kernel file ./drivers/s390/cio/qdio_main.c — and then peep these iconic functions:

• do_siga_output(9)
• qdio_do_eqbs(9)
• qdio_do_sqbs(9)
• qdio_get_ssqd_desc(9)
• qdio_free(9)
• qdio_allocate(9)
• qdio_establish(9)
• qdio_activate(9)
• handle_inbound(9)
• qdio_add_bufs_to_input_queue(9)
• handle_outbound(9)
• qdio_add_bufs_to_output_queue(9)
• qdio_start_irq(9)
• qdio_stop_irq(9)

mwah 💋 this page came from ./drivers/s390/cio, dated October 2026 — qdio_shutdown(9) and out! 🫶