usb_autoresume_device(9)

okay bestie, this is the usb_autoresume_device(9) page from the Kernel API Manual — and it's giving very important USB-core energy 💅✨

🎀 NAME 🎀

usb_autoresume_device — immediately autoresume a USB device and its interfaces 💖

🦋 SYNOPSIS 🦋

int usb_autoresume_device (struct usb_device *udev );

🌸 ARGUMENTS 🌸

• udev — the usb_device to autoresume. That's the main character right there 👑

✨ DESCRIPTION ✨

okay so this routine should be called when a core subsystem wants to use udev and needs to guarantee that it is not suspended. No autosuspend will occur until usb_autosuspend_device is called. 🫶

tiny caveat, bestie: this will not prevent suspend events originating in the PM core 💀

Examples would be when udev's device file in usbfs is opened, or when a remote-wakeup request is received. ✨

udev's usage counter is incremented to prevent subsequent autosuspends. However, if the autoresume fails, then the usage counter is re-decremented. 😭

The caller must hold udev's device lock. no exceptions, periodt 🔒

This routine can run only in process context. 🌈

💖 RETURN 💖

• 0 on success. 🎉
• A negative error code otherwise. 🙈

👑 SEE ALSO 👑

Kernel file ./drivers/usb/core/driver.c — plus the whole USB friend group:

• usb_driver_claim_interface(9)
• usb_driver_release_interface(9)
• usb_match_id(9)
• usb_register_device_driver(9)
• usb_deregister_device_driver(9)
• usb_register_driver(9)
• usb_deregister(9)
• usb_suspend_both(9)
• usb_resume_both(9)
• usb_enable_autosuspend(9)
• usb_disable_autosuspend(9)
• usb_autosuspend_device(9)
• usb_autopm_put_interface(9)
• usb_autopm_put_interface_async(9)
• usb_autopm_put_interface_no_suspend(9)
• usb_autopm_get_interface(9)
• usb_autopm_get_interface_async(9)
• usb_autopm_get_interface_no_resume(9)

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mwah 💋 this cutie comes from the source/version ./drivers/usb/core, dated October 2026, and the manual name on the footer is usb_autoresume_device(9) — slay and goodbye 🫶🌸