usb_put_dev(9)

🎀 NAME 🎀

okay so this is the usb_put_dev(9) page from the Kernel API Manual, and the whole vibe is: release a use of the usb device structure 💅. Like, you’re done using a USB device, so you let it go. slay. ✨

🌸 SYNOPSIS 🌸

void usb_put_dev (struct usb_device *dev );

🦋 ARGUMENTS 🦋

• dev — the device that's been disconnected. yes bestie, that exact one. 🫶

💖 DESCRIPTION 💖

Must be called when a user of a device is finished with it. fr fr. When the last user of the device calls this function, the memory of the device is freed. 💀✨

no skipping this one, bestie — the “last user” moment is literally when the device memory gets freed, so don't leave it hanging. 🙈

👑 SEE ALSO 👑

Kernel file: ./drivers/usb/core/usb.c — and the whole USB friend group, in order:

• usb_find_common_endpoints(9)
• usb_find_common_endpoints_reverse(9)
• usb_find_endpoint(9)
• usb_check_bulk_endpoints(9)
• usb_check_int_endpoints(9)
• usb_find_alt_setting(9)
• usb_ifnum_to_if(9)
• usb_altnum_to_altsetting(9)
• usb_find_interface(9)
• usb_for_each_dev(9)
• usb_release_dev(9)
• usb_alloc_dev(9)
• usb_get_dev(9)
• usb_get_intf(9)
• usb_put_intf(9)
• usb_intf_get_dma_device(9)
• usb_lock_device_for_reset(9)
• usb_get_current_frame_number(9)
• usb_alloc_coherent(9)
• usb_free_coherent(9)
• usb_alloc_noncoherent(9)
• usb_free_noncoherent(9)
• usb_endpoint_max_periodic_payload(9)
• usb_endpoint_is_hs_isoc_double(9)

💌 source/version: ./drivers/usb/core · date: October 2026 · manual: usb_put_dev(9) — mwah, bye bestie 💅🎀