dwc3_gadget_start_config(9)

✨ NAME ✨

dwc3_gadget_start_config — reset endpoint resources. Bestie, this page is from the Kernel API Manual, section (9), and the title is dwc3_gadget_start_config(9) — very demure, very endpoint-reset core. 💅

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🛠️ SYNOPSIS 🛠️

int dwc3_gadget_start_config (struct dwc3 *dwc , unsigned int
       resource_index );

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💖 ARGUMENTS 💖

• dwc — pointer to the DWC3 context. That's the main character struct, iykyk.
• resource_index — the DEPSTARTCFG.XferRscIdx value. And bestie, it must be 0 or 2.

⚠️ No cap: resource_index has to be 0 or 2. Those are the only valid values on this page.

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🎀 DESCRIPTION 🎀

Okay so this function is all about resetting endpoint resources, and the value you pass as resource_index changes the vibe:

• Set resource_index=0 to reset all endpoints' resources allocation. Do this as part of the power-on/soft-reset initialization. Very fresh-start energy. ✨
• Set resource_index=2 to reset only non-control endpoints' resources. Do this on receiving the SET_CONFIGURATION request or hibernation resume. Selective reset, slay. 🦋

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👑 SEE ALSO 👑

The kernel file is ./drivers/usb/dwc3/gadget.c, and the related refs are:

• dwc3_gadget_set_test_mode(9)
• dwc3_gadget_get_link_state(9)
• dwc3_gadget_set_link_state(9)
• dwc3_ep_inc_trb(9)
• dwc3_ep_inc_enq(9)
• dwc3_ep_inc_deq(9)
• dwc3_gadget_giveback(9)
• dwc3_send_gadget_generic_command(9)
• dwc3_send_gadget_ep_cmd(9)
• dwc3_gadget_calc_tx_fifo_size(9)
• dwc3_gadget_calc_ram_depth(9)
• dwc3_gadget_clear_tx_fifos(9)
• __dwc3_gadget_ep_enable(9)
• __dwc3_gadget_ep_disable(9)
• dwc3_ep_prev_trb(9)
• dwc3_prepare_one_trb(9)
• dwc3_prepare_last_sg(9)
• __dwc3_stop_active_transfer(9)
• dwc3_gadget_start_isoc_quirk(9)
• dwc3_gadget_setup_nump(9)
• dwc3_gadget_check_config(9)
• dwc3_gadget_init(9)

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🫶 That's the whole page, bestie! Source/version vibe: ./drivers/usb/dwc3, from the Kernel API Manual, dated October 2026. Periodt. 💜