ccw_device_resume(9)

🌸 NAME 🌸

ccw_device_resume — resume channel program execution 💅 (this is a page from the Kernel API Manual, bestie, so you know it's the real deal)

✨ SYNOPSIS ✨

int ccw_device_resume (struct ccw_device *cdev );

🎀 ARGUMENTS 🎀

• cdev — the target ccw device 👑 like, the one you're tryna wake back up

🦋 DESCRIPTION 🦋

okay so here's the tea: ccw_device_resume calls rsch on cdev's subchannel. that's it. that's the whole move. no cap. 🫶

💖 RETURN 💖

• 0 — slay, success ✨
• -ENODEV — the device is not operational 😭
• -EINVAL — invalid device state, she's not in a valid vibe rn 🙈
• -EBUSY — device is busy or there's an interrupt pending 💀

🔥 CONTEXT 🔥

bestie, read this before you call it, fr fr: interrupts disabled, and the ccw device lock held. that's the requirement, don't skip it 💅

🌈 SEE ALSO 🌈

• Kernel file ./drivers/s390/cio/device_ops.c 👀
• ccw_device_set_options_mask(9), ccw_device_set_options(9), ccw_device_clear_options(9), ccw_device_is_pathgroup(9), ccw_device_is_multipath(9), ccw_device_clear(9), ccw_device_start_timeout_key(9), ccw_device_start_key(9), ccw_device_start(9), ccw_device_start_timeout(9), ccw_device_halt(9), ccw_device_get_ciw(9), ccw_device_get_path_mask(9), ccw_device_get_chp_desc(9), ccw_device_get_util_str(9), ccw_device_get_id(9), ccw_device_tm_start_timeout_key(9), ccw_device_tm_start_key(9), ccw_device_tm_start(9), ccw_device_tm_start_timeout(9), ccw_device_get_mdc(9), ccw_device_tm_intrg(9), ccw_device_get_schid(9), ccw_device_pnso(9), ccw_device_get_cssid(9), ccw_device_get_iid(9), ccw_device_get_chpid(9), ccw_device_get_chid(9)

💌 ok that's the page!! it lives in ./drivers/s390/cio and it's dated October 2026 — go forth and resume those channel programs, icon 💅✨🦋