usb_get_urb(9)

okay bestie, welcome to usb_get_urb(9) from the Kernel API Manual — this is the little function that bumps a urb’s reference count, and honestly it’s giving quiet-but-essential main character energy 💅

🌸 NAME 🌸

usb_get_urb - increments the reference count of the urb

✨ SYNOPSIS ✨

struct urb * usb_get_urb (struct urb *urb );

🎀 ARGUMENTS 🎀

• urb — pointer to the urb you wanna modify, and bestie, it may be NULL

🦋 DESCRIPTION 🦋

okay so here’s the rule: this must be called whenever a urb is transferred from a device driver to a host controller driver. that’s the whole vibe.

it’s what allows proper reference counting to happen for urbs. no cap, that part matters 💖

👑 RETURN 👑

you get back a pointer to the urb with the incremented reference counter. slay.

🌈 SEE ALSO 🌈

the kernel file is ./drivers/usb/core/urb.c, and the whole squad is:

• usb_init_urb(9)
• usb_alloc_urb(9)
• usb_free_urb(9)
• usb_anchor_urb(9)
• usb_unanchor_urb(9)
• usb_pipe_type_check(9)
• usb_urb_ep_type_check(9)
• usb_submit_urb(9)
• usb_unlink_urb(9)
• usb_kill_urb(9)
• usb_poison_urb(9)
• usb_block_urb(9)
• usb_kill_anchored_urbs(9)
• usb_poison_anchored_urbs(9)
• usb_unpoison_anchored_urbs(9)
• usb_anchor_suspend_wakeups(9)
• usb_anchor_resume_wakeups(9)
• usb_wait_anchor_empty_timeout(9)
• usb_get_from_anchor(9)
• usb_scuttle_anchored_urbs(9)
• usb_anchor_empty(9)

source/version: ./drivers/usb/core 💖 date: October 2026 💖 page: usb_get_urb(9) — mwah, that’s the whole page, bestie 🫶✨