ccwgroup_set_offline(9)

✨ ccwgroup_set_offline(9) ✨

okay so bestie, this is a page from the Kernel API Manual and it's literally all about ccwgroup_set_offline — the function that puts a ccwgroup device to sleep 😴💤

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🌸 NAME 🌸

ccwgroup_set_offline — disable a ccwgroup device 🎀

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🦋 SYNOPSIS 🦋

int ccwgroup_set_offline (struct ccwgroup_device *gdev , bool call_gdrv );

like, that's the whole signature, no cap ✨

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💅 ARGUMENTS 💅

• gdev — the target ccwgroup device 👑 this is the one you're putting in timeout
• call_gdrv — Call the registered gdrv set_offline function 📞 like, do you want it to actually ring up the driver's set_offline? this bool is the answer

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💖 DESCRIPTION 💖

so what this function does is it attempts to put the ccwgroup device into the offline state 🌙✨ that's it, that's the vibe. it attempts — key word, iykyk 🙈

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🫶 RETURN 🫶

• 0 on success 🎉 slay, it worked
• a negative error value on failure 😭 not slay, something went wrong

ngl bestie, always check that return value. zero is the green flag 🟢, negative is the red flag 🚩

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/s390/cio/ccwgroup.c 📁
• ccwgroup_set_online(9)
• ccwgroup_create_dev(9)
• ccwgroup_driver_register(9)
• ccwgroup_driver_unregister(9)
• ccwgroup_probe_ccwdev(9)
• ccwgroup_remove_ccwdev(9)

like, the whole friend group fr fr 🫂💜

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and that's the page babes 🎀 it lives under ./drivers/s390/cio in the source tree, dated October 2026, and it's ccwgroup_set_offline(9) — go forth and offline responsibly 💅✨🍓