mei_minor_get(9)

💅 mei_minor_get(9) — from the Kernel API Manual, bestie ✨

Okay so we're in the Kernel API Manual today and the page is literally mei_minor_get(9) — say that three times fast, I dare you 🫶

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🌸 NAME 🌸

mei_minor_get — obtain next free device minor number. That's it, that's the whole vibe: it goes and finds you a minor number that nobody's using yet. Scavenger hunt but make it kernel 🎀

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✨ SYNOPSIS ✨

int mei_minor_get (struct mei_device *dev );

Bestie, that's the whole signature, copy it exactly, no cap 💅

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🦋 ARGUMENTS 🦋

• dev — device pointer. Just your regular old pointer to the device, nothing weird, nothing extra 🌈

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⭐ RETURN ⭐

It hands you back the allocated minor. That's the good ending 🎉

But if there's no free minor left? You get -ENOSPC. Yep. Not your fave, but it is what it is 😭

Lowkey important: the return value is either the allocated minor or -ENOSPC. Check it, bestie, don't just assume it slayed 🙈

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👑 SEE ALSO 👑

Kernel file ./drivers/misc/mei/main.c plus literally the whole friend group:

• mei_open(9)
• mei_cl_vtag_remove_by_fp(9)
• mei_release(9)
• mei_read(9)
• mei_cl_vtag_by_fp(9)
• mei_write(9)
• mei_ioctl_connect_client(9)
• mei_vt_support_check(9)
• mei_ioctl_connect_vtag(9)
• mei_ioctl_client_notify_request(9)
• mei_ioctl_client_notify_get(9)
• mei_ioctl(9)
• mei_poll(9)
• mei_cl_is_write_queued(9)
• mei_fsync(9)
• mei_fasync(9)
• trc_show(9)
• fw_status_show(9)
• hbm_ver_show(9)
• hbm_ver_drv_show(9)
• fw_ver_show(9)
• dev_state_show(9)
• mei_set_devstate(9)
• kind_show(9)
• mei_minor_free(9)

All of them, in order, no skips 💖 (iykyk — you will be clicking through half of these at 2am, sorry not sorry 🍓)

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Sign-off era: this iconic little page lives under ./drivers/misc/mei, dated October 2026, and it's filed as mei_minor_get(9) — periodt 💜🧚