comedi_auto_unconfig(9)

🌸 NAME 🌸

okay so bestie, welcome to the comedi_auto_unconfig(9) page from the Kernel API Manual — this one is all about how to Unconfigure auto-allocated COMEDI device energy. 💅

✨ SYNOPSIS ✨

void comedi_auto_unconfig (struct device *hardware_device );

🎀 ARGUMENTS 🎀

• hardware_device — the hardware device you previously passed to comedi_auto_config. same device, bestie, no cap.

💖 DESCRIPTION 💖

This function cleans up and eventually destroys the COMEDI device that was allocated by comedi_auto_config for the same hardware device. As part of this cleanup, the low-level COMEDI driver’s 'detach' handler will be called. 🫶

lowkey important: the COMEDI device itself will persist in an unattached state if it is still open, until it is released — and any mmapped buffers will persist until they are munmapped. so yeah, cleanup has a whole “I’ll leave when I’m ready” vibe 😭

This is usually called from a wrapper module in a bus-specific COMEDI module, which in turn is usually set as the bus device 'remove' function in the low-level COMEDI driver. literally the cleanup bestie doing its little behind-the-scenes main character work. ✨

🦋 SEE ALSO 🦋

Kernel file ./drivers/comedi/drivers.c — and the whole squad is:

• comedi_set_hw_dev(9)
• comedi_alloc_devpriv(9)
• comedi_alloc_subdevices(9)
• comedi_alloc_subdev_readback(9)
• comedi_readback_insn_read(9)
• comedi_timeout(9)
• comedi_dio_insn_config(9)
• comedi_dio_update_state(9)
• comedi_bytes_per_scan_cmd(9)
• comedi_bytes_per_scan(9)
• comedi_nscans_left(9)
• comedi_nsamples_left(9)
• comedi_inc_scan_progress(9)
• comedi_handle_events(9)
• comedi_load_firmware(9)
• __comedi_check_request_region(9)
• comedi_check_request_region(9)
• comedi_legacy_detach(9)
• comedi_auto_config(9)
• comedi_driver_register(9)
• comedi_driver_unregister(9)

mwah 💋 that’s the tea — source/version ./drivers/comedi, dated October 2026, and the manual name is comedi_auto_unconfig(9) 🎀✨