comedi_to_usb_dev(9)

✨ comedi_to_usb_dev(9) ✨

okay so this is from the Kernel API Manual, and it's literally all about one tiny helper that hands you the USB device connected to a COMEDI device. bestie, it's giving "small function, big vibes" 💅

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💖 NAME 💖

• comedi_to_usb_dev — Return USB device attached to COMEDI device. periodt 💖

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✨ SYNOPSIS ✨

struct usb_device * comedi_to_usb_dev (struct comedi_device *dev );

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🎀 ARGUMENTS 🎀

• dev — COMEDI device. that's the whole argument, bestie 🎀

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🦋 DESCRIPTION 🦋

So here's the lore: assuming dev->hw_dev is non-NULL, it is assumed to be pointing to a a struct device embedded in a struct usb_interface 🦋✨

lowkey the important bit is that dev->hw_dev has to be non-NULL, and it's assumed to be pointing at that embedded struct device situation. no cap.

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🌸 RETURN 🌸

If dev->hw_dev is non-NULL, you get the USB device to which the USB interface belongs 🌸

If dev->hw_dev is NULL, you get NULL. that's it, fr fr 💅

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🌈 SEE ALSO 🌈

Kernel file ./drivers/comedi/comedi_usb.c is the main character here, and you should also peek at:

• comedi_to_usb_interface(9)
• comedi_usb_auto_config(9)
• comedi_usb_auto_unconfig(9)
• comedi_usb_driver_register(9)
• comedi_usb_driver_unregister(9)

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mwah 💋 this page is from the source ./drivers/comedi, dated October 2026, and versioned as comedi_to_usb_dev(9) — slay and stay iconic ✨👑