isst_if_cdev_unregister(9)

💅 isst_if_cdev_unregister(9) — the Kernel API Manual girlie has entered the chat

Okay so bestie, welcome to the Kernel API Manual page for isst_if_cdev_unregister(9) — yes the whole manual is literally named that, she's fancy like that ✨. This is the un-register function, aka the "we're so done here" button for a callback. Let's get into it 🎀

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✨ SYNOPSIS ✨

void isst_if_cdev_unregister (int device_type );

That's the whole vibe. Nothing returned, nothing extra, just a clean exit 🦋

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🌸 ARGUMENTS 🌸

• device_type — the device type you wanna unregister, periodt.

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💖 DESCRIPTION 💖

So what does she do? This function unregisters the callback you previously registered (iykyk, the one that came in through the register side of things).

And here's the part that's giving main character energy: if this is the last callback unregistering, then the misc device gets removed. Like, she's the last one out the door so she turns off the lights 🔥 Lowkey iconic.

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⭐ RETURN ⭐

None. She gives you nothing back — and honestly? That's the point 💅

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🦋 SEE ALSO 🦋

Kernel file bestie right here:

./drivers/platform/x86/intel/speed_select_if/isst_if_common.c

And the whole friend group of sibling functions, no cap:

• isst_store_cmd(9)
• isst_resume_common(9)
• isst_if_mbox_cmd_invalid(9)
• isst_if_mbox_cmd_set_req(9)
• isst_if_get_pci_dev(9)
• isst_if_cdev_register(9)

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Go read the whole crew before you start unregistering stuff, okay? 🫶

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And that's the page! Shoutout to the source at ./drivers/platform/x86/intel/s... and the date October 2026 — that's the version and timestamp energy, and this girlie's sign-off is officially complete 😭💜 🧚