iudma_uninit(9)

✨ NAME ✨

iudma_uninit — uninitialize IUDMA channels. This one is straight from the Kernel API Manual, bestie, and it is giving teardown main character energy in the best way. 💅

🌸 SYNOPSIS 🌸

void iudma_uninit (struct bcm63xx_udc *udc );

That is the exact signature, spacing and all. Iconic, no cap — do not come for the little space before the close paren, it is literally what the page says. 🫶

🎀 ARGUMENTS 🎀

• udc — a reference to the device controller. That is the one thing it wants, periodt. ✨

🔥 DESCRIPTION 🔥

Okay so what does it actually do? Three things, fr fr:

• It kills the global IUDMA IRQs.
• It flushes the channels.
• It kills DMA.

Short, sharp, and to the point. No cap, that is the whole description. 🦋

👑 SEE ALSO 👑

If you are doing a little linked-lore deep dive, these are the references — all copied exactly, because we do not play with citations. 💖

• Kernel file ./drivers/usb/gadget/udc/bcm63xx_udc.c
• struct iudma_ch_cfg(9)
• struct iudma_ch(9)
• struct bcm63xx_ep(9)
• struct bcm63xx_req(9)
• struct bcm63xx_udc(9)
• bcm63xx_ep_dma_select(9)
• bcm63xx_set_stall(9)
• bcm63xx_fifo_setup(9)
• bcm63xx_fifo_reset_ep(9)
• bcm63xx_fifo_reset(9)
• bcm63xx_ep_init(9)
• bcm63xx_ep_setup(9)
• iudma_write(9)
• iudma_read(9)
• iudma_reset_channel(9)
• iudma_init_channel(9)
• iudma_init(9)
• bcm63xx_set_ctrl_irqs(9)
• bcm63xx_select_phy_mode(9)
• bcm63xx_select_pullup(9)
• bcm63xx_uninit_udc_hw(9)
• bcm63xx_init_udc_hw(9)
• bcm63xx_ep_enable(9)
• bcm63xx_ep_disable(9)
• bcm63xx_udc_alloc_request(9)
• bcm63xx_udc_free_request(9)
• bcm63xx_udc_queue(9)
• bcm63xx_udc_dequeue(9)
• bcm63xx_udc_set_halt(9)
• bcm63xx_udc_set_wedge(9)
• bcm63xx_ep0_setup_callback(9)
• bcm63xx_ep0_spoof_set_cfg(9)
• bcm63xx_ep0_spoof_set_iface(9)
• bcm63xx_ep0_map_write(9)
• bcm63xx_ep0_complete(9)
• bcm63xx_ep0_nuke_reply(9)
• bcm63xx_ep0_read_complete(9)
• bcm63xx_ep0_internal_request(9)
• bcm63xx_ep0_do_setup(9)
• bcm63xx_ep0_do_idle(9)
• bcm63xx_ep0_one_round(9)
• bcm63xx_ep0_process(9)
• bcm63xx_udc_get_frame(9)
• bcm63xx_udc_pullup(9)
• bcm63xx_udc_start(9)
• bcm63xx_udc_stop(9)
• bcm63xx_update_cfg_iface(9)
• bcm63xx_update_link_speed(9)
• bcm63xx_update_wedge(9)
• bcm63xx_udc_ctrl_isr(9)
• bcm63xx_udc_data_isr(9)
• bcm63xx_udc_init_debugfs(9)
• bcm63xx_udc_cleanup_debugfs(9)
• bcm63xx_udc_probe(9)
• bcm63xx_udc_remove(9)

That is the whole page, bestie. It lives under ./drivers/usb/gadget/udc, it is stamped October 2026, and the star of the show is iudma_uninit(9) — periodt. 💜